SKID-MOUNTED ELECTROLYSIS DEVICE

Abstract

 This application discloses an electrolysis device with a skid-mounted structure, comprising: at least one skid-mounted unit, a first type electrolytic treatment equipment, connecting pipelines, and connectors, the skid-mounted unit and the first type electrolytic treatment equipment are fixedly mounted on a designated site in sequence according to the flow direction of electrolytic fluid after electrolytic treatment, the distance between the skid-mounted units, and/or between the skid-mounted units and the first type electrolytic treatment equipment, and/or between the first type electrolytic treatment equipment to be connected through the connecting pipelines, are maintained within a set range, two or more said skid-mounted units associated with electrolytic treatment, and/or said skid-mounted units and said first type electrolytic treatment equipment associated with electrolytic treatment, and/or two or more said first type electrolytic treatment equipment associated with electrolytic treatment, are connected through said connecting pipelines and connectors. This application improves the mounting efficiency of the electrolysis device and reduces mounting and maintenance costs.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is based upon and claims priority to Chinese Patent Application No. 202210094424.3 filed on January 26, 2022, the entire content of which is incorporated herein by reference for all purposes.

TECHNICAL FIELD

[0002] This application relates to an electrolyte electrolysis device, specifically to an electrolysis device with a skid-mounted structure.

BACKGROUND

[0003] In recent years, with the increasing attention paid to ecological and environmental protection issues, the treatment and recycling of waste salts containing toxic or harmful substances generated in the production process in the chemical industry have received increasing attention from some enterprises or research institutions. The ion membrane electrolysis process, as an effective waste salt recycling and utilization technology, has entered the field of waste salt treatment.

[0004] At present, the conventional chlor-alkali industrial production equipment adopts a large-scale production model, which has the characteristics of large footprint, high initial one-time investment, long project construction period, and high requirements for industrial supporting facilities and technical personnel. These lead to high mounting and maintenance costs for the electrolysis device, and the supplier of the electrolysis device needs to participate in the mounting and commissioning process for a long time, resulting in high maintenance and mounting costs, which is not conducive to the supplier and even less conducive to the manufacturer's commissioning and operation.

SUMMARY

[0005] In view of the above issues, this application provides an electrolysis device with a skid-mounted structure that can solve the technical problems of long mounting and commissioning period, large footprint, and high maintenance cost of the electrolysis device.

[0006] In the first aspect, the present application provides an electrolysis device with a skid-mounted structure, comprising: at least one skid-mounted unit, a first type electrolytic treatment equipment, connecting pipelines, and connectors;

the skid-mounted unit and the first type electrolytic treatment equipment are fixedly mounted on a designated site in sequence according to the flow direction of electrolytic fluid after electrolytic treatment, the distance between the skid-mounted units, and/or between the skid-mounted units and the first type electrolytic treatment equipment, and/or between the first type electrolytic treatment equipment to be connected through the connecting pipelines are maintained within a set range;

two or more said skid-mounted units associated with electrolytic treatment, and/or said skid-mounted units and said first type electrolytic treatment equipment associated with electrolytic treatment, and/or two or more said first type electrolytic treatment equipment associated with electrolytic treatment, are connected through said connecting pipelines and connectors.

[0007] In some embodiments, the skid-mounted unit comprises at least a skid-mounted chassis, skid-mounted brackets fixed around the skid-mounted chassis, the skid-mounted brackets are fixedly connected each other by fixing parts;
the appearance of the skid-mounted unit matches a container unit, and the container unit can accommodate at least one skid-mounted unit in a unit of the skid-mounted unit.

[0008] In some embodiments, the skid-mounted unit further comprises at least skid-mounted pipelines, valves, monitoring instruments, and sensors, the skid-mounted pipelines are bundled and fixed on the skid-mounted unit in a way that matches connecting objects, the monitoring instruments and the sensors are connected to the skid-mounted pipelines;
at least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines, which serve as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

[0009] In some embodiments, the skid-mounted unit further comprises at least a second type electrolytic treatment equipment, skid-mounted pipelines, and valves, at least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment;

the second type electrolytic treatment equipment is fixed on the skid-mounted chassis and accommodated inside the skid-mounted brackets, the skid-mounted pipelines are connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment;

at least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines and/or the second type electrolytic treatment equipment, serving as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

[0010] In some embodiments, the skid-mounted unit further comprises at least a second type electrolytic treatment equipment, skid-mounted pipelines, valves, and monitoring instruments, at least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment;

the second type electrolytic treatment equipment is fixed on the skid-mounted chassis and accommodated inside the skid-mounted brackets, the skid-mounted pipelines are connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment, the monitoring instruments are set on the skid-mounted pipelines connected to the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment;

at least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines and/or the second type electrolytic treatment equipment, serving as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

[0011] In some embodiments, the skid-mounted unit further comprises at least a second type electrolytic treatment equipment, skid-mounted pipelines, valves, and sensors, at least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment;

the second type electrolytic treatment equipment is fixed on the skid-mounted chassis and accommodated inside the skid-mounted brackets, the skid-mounted pipelines are connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment, the sensors are set on the skid-mounted pipelines connected to the fluid inlet or the outlet of the second type electrolytic treatment equipment, and/or the sensors are set inside the second type electrolytic treatment equipment, or at the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment;

at least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines and/or the second type electrolytic treatment equipment, serving as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

[0012] In some embodiments, the skid-mounted unit further comprises at least a second type electrolytic treatment equipment, skid-mounted pipelines, valves, monitoring instruments, and sensors, at least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment;

the second type electrolytic treatment equipment is fixed on the skid-mounted chassis and accommodated inside the skid-mounted brackets, the skid-mounted pipelines are connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment, the monitoring instruments and the sensor are set on the skid-mounted pipelines connected to the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment, and/or the sensors are set inside the second type electrolytic treatment equipment, or at the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment;

at least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines and/or the second type electrolytic treatment equipment, serving as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

[0013] In some embodiments, the first type electrolytic treatment equipment comprises at least one of electrolysis cell, ion exchange resin tower, dechlorination tower, circulation tank, recovery saline water equipment, wastewater equipment, and finished alkali tank.

[0014] In some embodiments, the second type electrolytic treatment equipment comprises at least one of dechlorinated diluted saline water tank, pump, heat exchanger, and cooler.

[0015] In some embodiments, the skid-mounted unit further comprises a shell and a skid-mounted top cover, the shell encloses the periphery of the skid-mounted brackets, or the shell is inserted between the skid-mounted brackets to enclose an accommodated space, the skid-mounted top cover is fixedly connected to the skid-mounted brackets,
an enclosed space or at least partially enclosed space is formed by the shell, the skid-mounted top cover and the skid-mounted chassis.

[0016] The technical solution of embodiments of the present application disassembles the relevant electrolysis equipment in the electrolysis device according to the mounting and allocation order of the relevant components in the electrolysis device, and packages the processing equipment in the disassembled electrolysis equipment with a skid-mounted structure according to the assembly volume size. The disassembled electrolysis equipment is mounted in the skid-mounted structure, and the relevant pipelines, valves, monitoring instruments, etc. connected to the disassembled electrolysis equipment are pre mounted on the electrolysis equipment. After receiving the electrolysis equipment in the electrolysis device packaged in the skid-mounted structure, the manufacturer places and fixes various skid-mounted units according to the mounting position of various skid-mounted units, the mounting sequence of the skid-mounted units, etc. Each skid-mounted unit is provided with an external fluid inlet and an external fluid outlet, so as to connect with other skid-mounted units or the first type electrolytic treatment equipment through connecting pipelines and connectors. In the present embodiment of the application, as the electrolysis device has been decomposed according to the skid-mounted unit and the electrolysis equipment and pipelines in the skid-mounted unit itself have been mounted, the manufacturer receives the relevant skid-mounted units of the electronic device, arranges the corresponding skid-mounted units in order, and then connects them through the connecting pipelines. The electrolysis device provided in the present embodiment can be mounted without the need for professional personnel and maintenance of professional personnel, reducing the mounting and maintenance costs of the electrolysis device and improving its versatility.

[0017] The above description is only an overview of the technical solution of the present application. These, and further objects and advantages of the invention will be made clear or will become apparent during the course of the following description of a preferred embodiment of the invention..

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description of the following preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only for the purpose of illustrating preferred embodiments and should be not considered a limitation on the present application. And in all the drawings, like reference numerals are used to denote like components. In the accompanying drawings:

FIG. 1 shows a schematic diagram of the structure of the skid-mounted unit of the electrolysis device provided in an embodiment of the present application;

FIG. 2 shows a schematic diagram of the structure of the skid-mounted unit of the electrolysis device provided in an embodiment of the present application;

FIG. 3 shows a schematic diagram of the overall structure of the electrolysis device provided in an embodiment of the present application;

FIG. 4 shows a schematic diagram of the distribution of various parts of the electrolysis device with a skid-mounted structure according to an embodiment of the present application.

DETAILED DESCRIPTION

[0019] Below, a detailed description of the embodiments of the technical solution in the application will be provided in conjunction with the accompanying drawings. The following embodiments are only intended to provide a clearer explanation of the technical solution of the present application, and therefore are only used as examples and cannot be used to limit the scope of protection of the present application.

[0020] Unless otherwise defined, all technical and scientific terms used here have the same meanings as those commonly understood by those skill in the art of this application; The terms used here are only for the purpose of describing specific embodiments and are not intended to limit the present application; The terms "including" and "having" and any variations thereof in the specification and claims, as well as the accompanying drawings of this application are intended to cover non-exclusive inclusion.

[0021] In the description of embodiments the present application, technical terms such as "the first" and "the second", etc. are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implying the quantity, specific order, or primary secondary relationship of the indicated technical features. In the description of embodiments of the present application, "multiple" or "a plurality of" mean two or more, unless otherwise specified.

[0022] "embodiments" referred to here mean that specific features, structures, or characters described in conjunction with the embodiments may be included in at least one embodiment of the present application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skill in the art explicitly and implicitly understand that the embodiments described here can be combined with other embodiments.

[0023] In the description of embodiments of the present application, the term "and/or" is only a description of the association relationship of the associated objects, indicating that there can be three types of relationships, for example A and/or B can indicate the presence of A alone, the presence of A and B simultaneously, and the presence of B alone. In addition, the character "/" here generally indicates that the associated objects are in the "or" relationship.

[0024] In the description of embodiments of the present application, the term "multiple" or "a plurality of" refers to two or more (including two), similarly, "multiple groups" or "a plurality of groups" refers to two or more groups (including two groups), and "multiple pieces" or "a plurality of pieces" refers to two or more pieces (including two pieces).

[0025] In the description of embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present embodiment and simplifying the description, and not to indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0026] In the description of embodiments of this application, unless otherwise specified and limited, technical terms such as "mounting", "conjunction", "connection", and "fixation" should be broadly understood, for example, it may be a fixed connection, a detachable connection, or an integration; it may also be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium; it may be an internal connectivity of two components or an interaction relationship between two components. For those skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood based on specific circumstances.

[0027] The main purpose of embodiments of this application is to design a miniaturized production device with a single/set of electrolysis cells as the core electrolysis equipment and an integrated skid-mounted structure unit to achieve rapid assembly as the overall solution. The entire production equipment requires a compact layout with a small footprint, low initial one-time investment, short project construction period, and low requirements for industrial supporting facilities and technical personnel. The electrolysis device should be suitable for solving problems such as waste salt treatment and recycling, and the preparation of high concentration sodium hypochlorite solutions, representing the development direction of miniaturization of electrolysis devices.

[0028] The electrolysis device with skid-mounted structure of the present embodiment comprises: at least one skid-mounted unit, first type electrolytic treatment equipment, connecting pipelines, and connectors. In the present embodiment of the application, the connectors may include connecting devices such as flanges between pipelines. The connecting pipelines are mainly used in the docking between external fluid interfaces among skid-mounted units, or the external fluid interfaces docking between skid-mounted unit and skid-mounted units. lengths thereof are set according to the distance between the objects to be connected or the path requirements of the fluid, and quantity thereof is also determined by the number of docking interfaces between the objects to be connected.

[0029] The first type electrolytic treatment equipment mainly refers to electrolytic treatment equipment with large volume that is not easy to package in a skid-mounted manner. As an example, the first type electrolytic treatment equipment includes at least one of electrolysis cell, ion exchange resin tower, dechlorination tower, circulation tanks, recovery saline water equipment, wastewater equipment, finished alkali tank, and other equipment. This type of equipment is relatively large and can be transported or assembled separately, without the need for packaging by a skid-mounted manner. It should be noted that the purpose of packaging by a skid-mounted manner is to facilitate the overall output of the electrolysis device, that is, the manufacturers directly mount the electrolysis device based on the skid-mounted unit. Therefore, whether the first type electrolytic treatment equipment is packaged by a skid-mounted manner depends on the relative consideration of its volume size. If transportation space allows, the first type electrolytic treatment equipment may also be packaged with a skid-mounted manner.

[0030] In embodiments of the present application, the size of the skid-mounted unit may be matched with the packaging volume of a container, so that the skid-mounted unit in the embodiments of the present application can be conveniently transported through the container or other means. Of course, the size of the skid-mounted unit may also be matched with the capacity space of carriage of an enclosed truck, to facilitate transportation of the skid-mounted unit through the enclosed truck, etc. Alternatively, as an implementation, the size of the skid-mounted unit should be adapted to the space of transportation carriages such as trains, so that one or more skid-mounted units may be loaded into the train carriages for transportation purposes.

[0031] Two or more said skid-mounted units associated with electrolytic treatment, and/or said skid-mounted units and said first type electrolytic treatment equipment associated with electrolytic treatment, and/or two or more said first type electrolytic treatment equipment associated with electrolytic treatment, are connected through said connecting pipelines and said connectors. The skid-mounted unit and the first type electrolytic treatment equipment are fixedly mounted on the designated site in sequence according to the flow direction of the electrolytic fluid after electrolytic treatment; the distance between the skid-mounted units, and/or between the skid-mounted units and the first type electrolytic treatment equipment, and/or between the first type electrolytic treatment equipment to be connected through the connecting pipelines, is maintained within a set range. In embodiments of the present application, as the skid-mounted unit is a pre-assembled related equipment, the manufacturer can place the skid-mounted unit and the first type electrolytic treatment equipment of the relevant electrolysis device in spatial positions according to relevant specifications after receiving the skid-mounted unit and the first type electrolytic treatment equipment. For example, tower or fixture table, etc. can be constructed according to the distribution direction and position of the skid-mounted unit and the first type electrolytic treatment equipment, and the skid-mounted unit and the first type electrolytic treatment equipment can be fixed on the tower or fixture table. Then the skid-mounted unit and the first type electrolytic treatment equipment are connected in sequence through the connecting pipelines and connectors. The entire electrolysis device can be used in production after simple debugging.

[0032] FIG. 1 shows a schematic diagram of the structure of the skid-mounted unit of the electrolysis device provided in an embodiment of the present application. As shown in FIG. 1, in some embodiments of the present application, the skid-mounted unit comprises at least a skid-mounted chassis 10 and a skid-mounted bracket 20 fixed around the skid-mounted chassis 10; the skid-mounted brackets 20 are fixedly connected each other by fixing parts; the fixing parts here include angle steel parts, reinforcing ribs, etc. The appearance of the skid-mounted unit matches a container unit, and the container unit can accommodate at least one skid-mounted unit in a unit of the skid-mounted unit. The skid-mounted unit should be a device mounting architecture equivalent in size to the device, which has a containing space for electrolysis equipment and its related connecting pipelines. The skid-mounted brackets 20 are used to support and protect the electrolysis equipment contained thereof.

[0033] As shown in FIG. 1, in some embodiments of the present application, the skid-mounted unit further comprises at least skid-mounted pipelines 30, valves, monitoring instruments, and sensors. The skid-mounted pipelines 30 are bundled and fixed on the skid-mounted unit in a way that matches the connected objects. The monitoring instruments and the sensors are connected to the skid-mounted pipelines 30. At least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines 30, serving as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines. In the skid-mounted unit, only the skid-mounted pipelines 30, valves, monitoring instruments, sensors, etc. may be loaded. This type of skid-mounted unit only serves as a connection between electrolysis equipment. To facilitate the mounting of electrolysis devices by manufacturers, the skid-mounted pipelines 30, valves, monitoring instruments, sensors, etc. may be packaged in the form of the skid-mounted unit for transportation and overall mounting.

[0034] Those skill in the art should understand that auxiliary components such as valves, monitoring instruments, sensors, etc. in the skid-mounted unit may not be included at the same time. For example, the skid-mounted unit may only include the skid-mounted pipelines 30 and valves, or the skid-mounted unit may include the skid-mounted pipelines 30, valves, monitoring instruments, etc., or the skid-mounted unit may include the skid-mounted pipelines 30, monitoring instruments, etc.

[0035] FIG. 2 shows a schematic diagram of the structure of the skid-mounted unit of the electrolysis device provided in an embodiment of the present application. As shown in FIG. 2, in some embodiments of the present application, the skid-mounted unit further comprises at least a second type electrolytic treatment equipment 40, skid-mounted pipelines 30, and valves. At least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment 40. The second type electrolytic treatment equipment 40 is fixed on the skid-mounted chassis 10 and accommodated inside the skid-mounted brackets 20. The skid-mounted pipelines 30 are connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment 40. At least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines 30 and/or the second type electrolytic treatment equipment 40, as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines. As an implementation, the skid-mounted unit mainly encapsulates the second type electrolytic treatment equipment 40, that is, the second type electrolytic treatment equipment 40 and its related connecting pipelines are connected in advance and mounted and fixed in the skid-mounted unit.

[0036] As an example, the second type electrolytic treatment equipment 40 includes at least one of the electrolysis equipment such as dechlorinated diluted saline water tank, pump, heat exchanger, cooler, etc. The electrolysis equipment is generally relatively small in volume, and its related pipelines can be connected in advance and fixed in the skid-mounted unit for easy mounting by manufacturers on the basis of the skid-mounted unit. This not only improves the mounting efficiency of the electrolysis device, but also simplifies the mounting process of the entire electrolysis device. There is no need for specialized mounting and maintenance personnel to guide, and general staff can mount the electrolysis device.

[0037] In some embodiments of the present application, the skid-mounted unit further comprises at least a second type electrolytic treatment equipment 40, skid-mounted pipelines 30, valves, and monitoring instruments. At least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment 40. The second type electrolytic treatment equipment 40 is fixed on the skid-mounted chassis 10 and accommodated inside the skid-mounted brackets 20. The skid-mounted pipelines 30 are connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment 40. The monitoring instruments are set on the skid-mounted pipelines 30 connected to the fluid inlet or the fliud outlet of the second type electrolytic treatment equipment 40.

[0038] At least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines 30 and/or the second type electrolytic treatment equipment 40, as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines. As an implementation, the relevant types of the second type electrolytic treatment equipment 40 in each skid-mounted unit are different, and their connecting pipelines and related auxiliary equipment will also be different. Therefore, the skid-mounted units formed by respective second type electrolytic treatment equipment 40 are also different with each other.

[0039] In some embodiments of the present application, the skid-mounted unit further comprises at least a second type electrolytic treatment equipment 40, skid-mounted pipelines 30, valves, and sensors. At least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment 40. The second type electrolytic treatment equipment 40 is fixed on the skid-mounted chassis 10 and accommodated inside the skid-mounted brackets 20. The skid-mounted pipelines 30 are connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment 40. The sensors are set on the skid-mounted pipelines 30 connected to the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment 40, and/or the sensors are set inside the second type electrolytic treatment equipment 40, or at the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment 40.

[0040] At least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines 30 and/or the second type electrolytic treatment equipment 40, as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

[0041] In some embodiments of the present application, the skid-mounted unit further comprises at least a second type electrolytic treatment equipment 40, skid-mounted pipelines 30, valves, monitoring instruments, and sensors. At least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment 40. The second type electrolytic treatment equipment 40 is fixed on the skid-mounted chassis 10 and accommodated inside the skid-mounted brackets 20. The skid-mounted pipelines 30 is connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment 40. The monitoring instruments and the sensors are set on the skid-mounted pipelines 30 connected to the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment 40, and/or the sensors are set inside the second type electrolytic treatment equipment 40, or at the fluid inlet or the outlet of the second type electrolytic treatment equipment 40.

[0042] At least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines 30 and/or the second type electrolytic treatment equipment 40, as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

[0043] As shown in FIG. 1 and 2, in some embodiments of the present application, the skid-mounted unit further comprises a shell and a skid-mounted top cover 50, the shell encloses the periphery of the skid-mounted brackets 20, or the shell is inserted between the skid-mounted brackets 20 to enclose an accommodated space. The skid-mounted top cover 50 is fixedly connected to the skid-mounted brackets 20.

[0044] An enclosed space or at least partially enclosed space is formed by the shell, the skid-mounted top cover 50, and the skid-mounted chassis 10. That is, the skid-mounted unit may be an exposed structure, such as only including the skid-mounted chassis 10 and skid-mounted brackets 20, or only including the skid-mounted chassis 10, skid-mounted brackets 20, and skid-mounted top cover 50, etc.

[0045] Of course, considering the relevant protection of packaging equipment, it is also possible to attach a shell for the skid-mounted unit, so that the skid-mounted unit forms a enclosed or partially enclosed structure, which can better protect the second type electrolytic treatment equipment 40 and corresponding connecting pipelines set inside it. Even during long-distance transportation, the electrolysis equipment mounted inside will be not easily damaged.

[0046] The embodiments of the application decomposes the entire production device into a plurality of integrated skid-mounted units. All equipment, pipelines, instruments, and valves within the skid-mounted units are pre-assembled, and the skid-mounted units are connected by flanges. On the basis of meeting the requirements of civil engineering conditions, fast and convenient mounting and construction can be achieved on the construction site. Meanwhile, further optimization was made to the process route and equipment layout, reducing equipment, pipelines, instruments, and valves, and lowering the height of the mounting framework structure of the entire production system. As long as the construction site provided by the manufacturer meets the requirements of civil engineering conditions, it can achieve quick and convenient mounting and construction through a skid-mounted manner.

[0047] The entire production device adopts a skid-mounted unit for quick assembly, and adopts optimized process routes and equipment layout. While meeting safety and environmental protection requirements, the overall layout is compact, occupying a small area, with low initial one-time investment, short project construction period, and low requirements for industrial supporting facilities and technical personnel, achieving the goal of electrolyzing saline water and producing alkali and chlorine gas at a lower cost.

[0048] The following further illustrates the essence of the technical solution of the embodiments of the present application through specific examples.

[0049] FIG. 3 shows a schematic diagram of the overall structure of the electrolysis device with a skid-mounted structure provided in an embodiment of the present application. As shown in FIG. 3, the electrolysis device with a skid-mounted structure of the present embodiment is designed to meet the needs of waste salt treatment and recycling, as well as the preparation of high concentration sodium hypochlorite solution, while solving the problems of large footprint, high initial one-time investment, long project construction period, and high requirements for industrial supporting facilities and technical personnel in conventional chlor-alkali industrial production devices. This utility model provides an overall solution for a skid-mounted single electrolysis cell production device, which adopts a more optimized process route and equipment layout, while achieving the goal of electrolyzing saline water and producing alkali and chlorine gas at a lower cost. Those skill in the art should understand that the description of the present embodiment is only based on the example of caustic soda electrolysis, and is not a limitation on the technical solution of the present embodiment. For electrolysis devices such as hydrogen production, the technical solution of the present embodiment is also applicable.

[0050] Taking a 100% wt caustic soda skid-mounted single electrolysis cell production device with an annual output of 5000 tons as an example, the production process flow is explained as follows.

[0051] Saline water is supplied outside the boundary area, heated by the saline water heater 153, and then sent to the ion exchange resin tower 160 for further refinement. After meeting the requirements of the electrolysis process, it is sent to the refined saline water tank 170. The ion exchange resin tower 160 adopts a dual tower circulation form, with one tower refining the saline water and the other tower regenerating the resin. After the regeneration is completed, the tower runs in series with the other tower.

[0052] The refined saline water from refined brine tank 170 is pumped through refined saline water pump 174 to the anode liquid feed manifold of electrolysis cell 230. The refined saline water pump 174 is frequency controlled to maintain a stable pump outlet pressure and achieve stable inlet pressure of saline water in the feed manifold. The flow rate of saline water is controlled to ensure that the concentration of saline water is within a specified value. The anode chamber adopts an acid addition process, where hydrochloric acid and saline water are continuously fed into the anode chamber to neutralize the hydroxide ions that penetrate from the cathode chamber.

[0053] Saline water is electrolyzed in the anode chamber of electrolysis cell 230, producing chlorine gas while reducing the concentration of saline water. The mixture of chlorine gas and diluted saline water after electrolysis is collected into the anode liquid discharge manifold for gas and liquid separation. After gas-liquid separation, the diluted saline water enters the diluted saline water circulation tank 260. The chlorine gas is collected in the chlorine gas manifold and sent out of the boundary area after pressure control.

[0054] The diluted saline water in the diluted saline water circulation tank 260 is partially returned to the refined saline water pipelines through the diluted saline water circulation pump 264, and partially sent to the dechlorination tower 310 for dechlorination. After adding with hydrochloric acid to adjust the Ph value of the diluted saline water, the diluted saline water is sent to the top of the dechlorination tower 310 for dechlorination, removing most of the free chlorine in the diluted saline water. As an implementation, the dechlorination process of the present embodiment may adopt the air blowing method.

[0055] The chlorine gas removed by dechlorination tower 310 is cooled by chlorine gas cooler 313 and sent to waste chlorine treatment. The diluted saline water from the dechlorination tower 310 enters into the dechlorinated diluted saline water tank 311, passes through the dechlorinated diluted saline water pump 314, added with alkaline solution to adjust the Ph value, and then added with sodium sulfite to completely remove residual free chlorine. The diluted saline water without free chlorine is send out of the boundary area.

[0056] The alkaline solution in the alkaline solution circulation tank 270 is diluted with pure water to the set concentration through the alkaline solution circulation pump 274, and then sent to the cathode liquid feed manifold of the electrolysis cell 230. In the embodiment of this application, the working mode of the alkaline solution circulation pump 274 may be a variable frequency control mode to maintain a stable pump outlet pressure, achieve stable pressure at the alkaline solution inlet of the feed manifold, and thus control the alkaline solution flow rate to ensure that the alkaline solution concentration is maintained at the set value. The alkaline solution heat exchanger 273 is mounted between the alkaline solution circulation pump 274 and the electrolysis cell 230, controlling the temperature of the alkaline solution within the specified value. The alkaline solution is electrolyzed in the cathode chamber of the electrolysis cell 230, producing hydrogen and alkali. The mixture of hydrogen and alkaline solution after electrolysis is collected in the alkaline solution discharge manifold for gas and liquid separation. After separation, the alkaline solution enters the alkaline solution circulation tank 270. Through the alkaline solution circulation pump 274, part of the alkaline solution the finished alkali tank 340 as finished alkali, and part is sent to the electrolysis cell 230 for further circulation. Hydrogen gas is collected in the hydrogen manifold and sent out of the boundary area after pressure control. The ratio between hydrogen pressure and chlorine pressure is controlled to maintain the difference in chlorine hydrogen pressure at the set value.

[0057] The salt containing wastewater generated from the reproduction of ion exchange resin tower 160 and the salt containing wastewater after the shutdown and washing of electrolysis cell 230 are discharged into the recovery saline water tank 165. The acidic and alkaline containing wastewater generated from the reproduction of ion exchange resin tower 160, as well as the alkaline containing wastewater after the shutdown and washing of electrolysis cell 230, are discharged into the wastewater tank 166. The high concentration saline water after the shutdown of electrolysis cell 230 is discharged into the dilute saline water circulation tank 260, and the high concentration alkaline solution after the shutdown of electrolysis cell 230 is discharged into the alkaline solution circulation tank 270.

[0058] FIG. 4 shows the distribution diagram of various parts of the electrolysis device with a skid-mounted structure in an embodiment of the present application. As shown in FIG. 4, the distribution diagram of various parts of the electrolysis device with a skid-mounted structure is shown, and the production principle of the skid-mounted unit in the embodiment of the present application is explained in conjunction with FIG. 4, as follows.

[0059] For a caustic soda skid-mounted single electrolysis cell production device with an annual output of 5000 tons and a 100% wt, it is divided into multiple integrated skid-mounted units as shown in FIG. 2, therein the large tanks, and equipment include electrolysis cell 230, ion exchange resin tower 160, recovery saline water tank 165, waste water tank 166, refined saline water tank 170, diluted saline water circulation tank 260, alkaline solution circulation tank 270, dechlorination tower 310, dechlorinated diluted saline water tank 311, sodium sulfite tank 320 and pump 324, finished alkali tank 340, high-purity hydrochloric acid tank 350, and pure water tank 360, which are transported or mounted as independent equipment. Due to the large volume of the above-mentioned equipment, it is not necessary to perform skid-mounted packaging, and the corresponding pipelines, instruments, pumps, etc. may be mounted separately to facilitate the mounting and use of manufacturers. Large tanks and other equipment mounted separately are more convenient for transportation due to their relatively small volume.

[0060] The equipment, pipelines, instruments, and valves connected between the skid-mounted units shall be implemented into integrated skid-mounted units. Among them, skid-mounted unit 1 is a resin tower skid-mounted unit, with a length, width, and height of approximately 4500 * 2000 * 2200mm. In the present embodiment, the above dimensions are only illustrative and do not intend to limit the volume of the skid-mounted unit in the present embodiment. The skid-mounted unit 2 is a waste liquid treatment, refined brine, and pure water skid-mounted unit, with a length, width, and height of approximately 10500 * 1300 * 2200mm. Those skill in the art should understand that the volume dimensions of the skid-mounted unit 2 are only illustrative. The skid-mounted unit 3 is a dilute saline water dechlorination and electrolysis cycle skid-mounted unit, which is divided into two layers, A and B. A is the lower layer of skid-mounted unit, with a length, width, and height of approximately 10500 * 2000 * 2000mm; B is the upper layer of skid-mounted unit, with a length, width, and height of approximately 10500 * 2000 * 2400mm. The skid-mounted unit 4 is a finished alkali skid-mounted unit, with a length, width, and height of approximately 2500 * 2000 * 2200mm. The equipment, pipelines, instruments, and valves inside the skid-mounted units are pre-assembled, and the various skid-mounted units may be connected through flanges and other connectors.

[0061] Some equipment needs to be mounted on the frame structure, among which frame A is the mounting frame for electrolysis device, with a length, width, and height of approximately 10000 * 5000 * 2600mm, stand B is the mounting frame for the dechlorination equipment, with a length, width, and height of approximately 4000 * 3000 * 3800mm. The entire production system covers an area of approximately 22000 * 14000mm, with a maximum mounting height of 6000mm.

[0062] In this way, based on the technical solutions of embodiments of the present application, the electrolysis device can be skid-mounted quickly and conveniently on the construction site of the manufacturer, while meeting the requirements of civil engineering conditions.

[0063] On the basis of traditional electrolysis process, the electrolyte required for electrolysis in electrolysis cell 230 is directly supplied by refined saline water pump 174 and alkaline solution circulation pump 274 with added variable frequency control. By controlling the pump through variable frequency to maintain a stable outlet pressure, the stability of the pressure and flow rate of electrolyte entering the electrolysis cell 230 is achieved, replacing the method of controlling the pressure and flow rate of electrolyte entering the electrolysis cell 230 by the liquid level of the saline water high-level tank and the alkaline solution high-level tank in the traditional electrolysis process. The waste liquid generated during the entire production process of ion exchange resin tower 160 and electrolysis cell 230 shares the recovery saline water tank 165 and waste water tank 166, with no anode liquid discharge tank and cathode liquid discharge tank are set. Ultimately, the investment in equipment, pipelines, instruments, and valves was reduced, and the height of the mounting framework structure of the entire production system was lowered.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and not limiting. Although detailed explanations have been provided for the present application with reference to the aforementioned embodiments, those skill in the art should understand that the technical solutions described in the aforementioned embodiments may be modified, or some or all of their technical features may be equivalently replaced, and these modifications or replacements do not make the essence of the corresponding technical solutions separate from the scope of the technical solutions of various embodiments of the present application, and they should all be covered within the scope of the claims and specifications of the present application. Especially, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. This application is not limited to specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electrolysis device with a skid-mounted structure, characterized in that the device comprises: at least one skid-mounted unit, a first type electrolytic treatment equipment, connecting pipelines, and connectors;

the skid-mounted unit and the first type electrolytic treatment equipment are fixedly mounted on a designated site in sequence according to the flow direction of electrolytic fluid after electrolytic treatment, the distance between the skid-mounted units, and/or between the skid-mounted units and the first type electrolytic treatment equipment, and/or between the first type electrolytic treatment equipment to be connected through the connecting pipelines are maintained within a set range;

two or more said skid-mounted units associated with electrolytic treatment, and/or said skid-mounted units and said first type electrolytic treatment equipment associated with electrolytic treatment, and/or two or more said first type electrolytic treatment equipment associated with electrolytic treatment, are connected through said connecting pipelines and connectors.

2. The electrolysis device according to claim 1, characterized in that the skid-mounted unit comprises at least a skid-mounted chassis, skid-mounted brackets fixed around the skid-mounted chassis, the skid-mounted brackets are fixedly connected each other by fixing parts;
the appearance of the skid-mounted unit matches a container unit, and the container unit can accommodate at least one skid-mounted unit in a unit of the skid-mounted unit.

3. The electrolysis device according to claim 2, characterized in that the skid-mounted unit further comprises at least skid-mounted pipelines, valves, monitoring instruments, and sensors, the skid-mounted pipelines are bundled and fixed on the skid-mounted unit in a way that matches connecting objects, the monitoring instruments and the sensors are connected to the skid-mounted pipelines;
at least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines, which serve as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

4. The electrolysis device according to claim 2, characterized in that the skid-mounted unit further comprises at least a second type electrolytic treatment equipment, skid-mounted pipelines, and valves, at least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment;

the second type electrolytic treatment equipment is fixed on the skid-mounted chassis and accommodated inside the skid-mounted brackets, the skid-mounted pipelines are connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment;

at least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines and/or the second type electrolytic treatment equipment, serving as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

5. The electrolysis device according to claim 2, characterized in that the skid-mounted unit further comprises at least a second type electrolytic treatment equipment, skid-mounted pipelines, valves, and monitoring instruments, at least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment;

the second type electrolytic treatment equipment is fixed on the skid-mounted chassis and accommodated inside the skid-mounted brackets; the skid-mounted pipelines are connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment, the monitoring instruments are set on the skid-mounted pipelines connected to the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment;

at least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines and/or the second type electrolytic treatment equipment, serving as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

6. The electrolysis device according to claim 2, characterized in that the skid-mounted unit further comprises at least a second type electrolytic treatment equipment, skid-mounted pipelines, valves, and sensors, at least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment;

the second type electrolytic treatment equipment is fixed on the skid-mounted chassis and accommodated inside the skid-mounted brackets, the skid-mounted pipelines are connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment, the sensors are set on the skid-mounted pipelines connected to the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment, and/or the sensors are set inside the second type electrolytic treatment equipment, or at the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment;

at least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines and/or the second type electrolytic treatment equipment, serving as interfaces for the skid-mounted unit to join with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

7. The electrolysis device according to claim 2, characterized in that the skid-mounted unit further comprises at least a second type electrolytic treatment equipment, skid-mounted pipelines, valves, monitoring instruments, and sensors, at least a fluid inlet and a fluid outlet are provided on the second type electrolytic treatment equipment;

the second type electrolytic treatment equipment is fixed on the skid-mounted chassis and accommodated inside the skid-mounted brackets, the skid-mounted pipelines are connected to at least one of the fluid inlet and the fluid outlet of the second type electrolytic treatment equipment, the monitoring instruments and the sensor are set on the skid-mounted pipelines connected to the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment, and/or the sensors are set inside the second type electrolytic treatment equipment, or at the fluid inlet or the fluid outlet of the second type electrolytic treatment equipment;

at least an external fluid inlet and an external fluid outlet are provided on the skid-mounted pipelines and/or the second type electrolytic treatment equipment, serving as interfaces for the skid-mounted unit to joint with other skid-mounted units or the first type electrolytic treatment equipment through the connecting pipelines.

8. The electrolysis device according to any one of claims 1 to 7, characterized in that the first type electrolytic treatment equipment comprises at least one of electrolysis cell, ion exchange resin tower, dechlorination tower, circulation tank, recovery saline water equipment, wastewater equipment, and a finished alkali tank.

9. The electrolysis device according to any one of claims 4 to 7, characterized in that the second type electrolytic treatment equipment comprises at least one of dechlorinated diluted saline water tank, pump, heat exchanger, and cooler.

10. The electrolysis device according to claim 2, characterized in that the skid-mounted unit further comprises a shell and a skid-mounted top cover, the shell encloses the periphery of the skid-mounted brackets, or the shell is inserted between the skid-mounted brackets to enclose an accommodated space, the skid-mounted top cover is fixedly connected to the skid-mounted brackets,
an enclosed space or at least partially enclosed space is formed by the shell, the skid-mounted top cover and the skid-mounted chassis.

Drawing