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EP 1 955 759 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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28.07.2010 Bulletin 2010/30 |
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Date of filing: 04.02.2008 |
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International Patent Classification (IPC):
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Method and apparatus for moisturizing dusting material
Verfahren und Vorrichtung zum Befeuchten von staubenden Material
Procédé et appareil d'humidification de matériau pulvérulent
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Designated Contracting States: |
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AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL
PT RO SE SI SK TR |
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Priority: |
02.02.2007 FI 20075072
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Date of publication of application: |
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13.08.2008 Bulletin 2008/33 |
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Proprietor: Miettinen, Ensio |
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02940 Espoo (FI) |
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Inventor: |
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- Miettinen, Ensio
02940 Espoo (FI)
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Representative: Arvela, Sakari Mikael et al |
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Seppo Laine Oy
Itämerenkatu 3 B 00180 Helsinki 00180 Helsinki (FI) |
(56) |
References cited: :
DE-A1- 1 667 071 GB-A- 520 966 US-A- 4 527 902 US-A- 5 246 288
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DE-A1- 4 411 201 US-A- 4 116 163 US-A- 4 546 013
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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[0001] The present invention relates to a method, according to the preamble of Claim 1,
for moisturizing a dusting, flowing solid material. The scope of the application includes,
for example, the moisturizing and cooling of power-plant ash, the moisturizing of
the constituent components of concrete, the moisturizing of dry substances in the
paper industry, and even the pre-moisunizing of dry substances in bakeries. In general,
the is intended for the moisturizing of dry substances in process industries.
[0002] The invention also relates to an arrangement for implementing the method.
[0003] In process industries, it is necessary to moisturize various dusting substances for
many reasons. For example, when handling hot ash, moisturizing is intended to reduce
the temperature, in order to avoid the risk of combustion, as well as to facilitate
handling and to prevent dusting. On the other hand, moisturizing can be intended to
form mixtures from dusting substances and substances requiring to be moisturized.
Such processes exist, for example, in the bakery industry and the paper industry,
in which mixtures for use elsewhere in the process are formed from fine-particle solids
together with water or some other liquid.
[0004] Dusting substances are fine-particle, flowing substances already due to their nature.
They are quite difficult to moisturized affectively. When dusting substances come
into contact with a liquid, the substance certainty moisturizes easily, after which
it easily forms a sticky mass, through which water penetrates poorly. Thus a fine-particle,
dry substance easily collects into lumps, the centre of which is dry while the surface
layer prevents the material in the centre from moisturizing. The sludge forming the
surface layer is often quite adhesive, so that the material to be moisturized sticks
easily and firmly to any surface that it touches. A great deal of energy is required
to disperse the sludge and lumps and detach the mass that has adhered to the walls
of the equipment. On the other hand, there is a great danger of blockage while the
reliable operation of the moisturizing devices demands much cleaning and maintenance
work.
[0005] One apparatus that is used for ash moisturizing in power-plant processes is a moisturizing
screw, in which a screw thread is used to move a mixture of ash and water. A problem
with this apparatus is that is becomes blocked easily and is quite laborious to clean
after blockage. Thus this apparatus cannot be regarded as operating with satisfactory
reliability in industrial processes. Attempts have been made to reduce blockage by
coating the internal parts of the apparatus with rubber, but this leads to high costs,
both in manufacture and when renewing the coating.
[0006] US 4 527 902 discloses a method and an apparatus in accordance with the preamble of claims 1 and
7. The apparatus used comprises a vertical mixing chamber with a vertical mixing axle.
At one end of the chamber and over the mixing axle is a feeding connection for wood
chips and feeding nozzles for glue has been arranged over the axle at the upper part
of the chamber. The exit outlet is arranged on the opposite end of the mixing chamber
and under the mixing axle.
[0007] The present invention is intended to create a moisturizing apparatus, in which a
better contact is created between the water used for moisturizing and the substance
to be moisturized and which gives a better moisturizing result.
[0008] The invention is based on feeding the substance to be moisturized into a reaction
chamber, into which a compressed gas is blown and liquid in the form of drops is fed
as a spray. The compressed air and water are fed, through a shaft arranged on the
central axis of the reaction chamber, radially towards the edges of the chamber, while
the shaft is simultaneously rotated. The direction of flow is from top to bottom while
the substance to be moisturized is fed under pressure over the shaft.
[0009] In particular, compressed air and water are fed into the substance to be moisturized.
[0010] According to one preferred embodiment of the invention, the feed connection for the
substance to be moisturized has a smaller feed cross-sectional surface than the exit
connection for the moisturized substance.
[0011] According to one preferred embodiment of the invention, the liquid is fed to the
apparatus in the longitudinal direction of the shaft, along a channel formed in its
centre and into the reaction chamber through transverse, preferably radial drill holes.
The air is correspondingly fed through channels running parallel to the shaft and
preferably from radial, transverse drill holes.
[0012] More specifically, the method according to the invention is characterized by what
is stated in the characterizing portion of Claim 1.
[0013] The arrangement according to the invention is, for its part, characterized by what
is stated in the characterizing portion of Claim 7.
[0014] Considerable advantages are gained with the aid of the invention.
[0015] The most important advantage of the invention is that reliable moisturizing is ensured
and blockage is avoided. The need for maintenance is reduced and, the reliable operation
means that breaks in the operation of the moisturizer will not interfere with the
processes depending on it. The method is suitable for many different processes, in
which there is a need to moisturizing a particulate material. The apparatus is especially
intended for the processing of fine-particle dusting substances, but it can also be
used to similarly process materials, or mixtures of materials consisting of shavings,
chips, or other reasonably light and small pieces. The essential feature is that the
solid parts of the material are made to move by the effect of air blown into the reaction
chamber. The intention is thus to process a flowing, solid substance. In the apparatus,
the substance to be moisturized travels by gravity from the top to the bottom, so
that the movement of the substance consumes no energy. At the same time, the mixing
result is good, because the material to be mixed is fed onto the top of the mixer
element.
[0016] The construction of the apparatus is simple and the apparatus is easy to open and
service. There are few moving parts and they are simple and can be economically changed
when necessary.
[0017] In the following, the invention is examined in greater detail with the aid of the
accompanying drawings.
Figure 1 shows a side cross-section of one embodiment of the invention.
Figure 2 shows an end view of the apparatus of Figure 1.
[0018] The body of the apparatus forms a tubular reaction chamber 1, with a feed connection
2 formed above it and an exit connector 3 below it. The feed connection 2 is narrower
than the diameter of the reaction chamber 1, in order to permit efficient mixing.
The feed connection 2 being narrower than the diameter of the reaction chamber ensures
that the substance to be mixed will reach the mixer shaft 6. The exit connection 3
is, in turn, preferably at least the size of the diameter of the reaction chamber
1, in order to ensure the smooth exit of the moisturized substance. However, the minimum
requirement is for the feed connection to be above the mixer element and the exit
connection 3 to be on the opposite side of the mixer element 6 to the feed connection,
so that the openings of the exit connection 3 and the feed connection 2 will be at
least partly on top of each other. The body of the apparatus is divided along a dividing
line 5 at the central axis 4 of the reaction chamber 1. The apparatus can be opened
at the dividing line 5 for cleaning and maintenance.
[0019] The actual mixing component consists of a mixer shaft 6 arranged on the central axis
of the reaction chamber 1. The mixer shaft 6 runs through the end wall 7 of the reaction
chamber and the feed-throughs of the shaft 6 are sealed with a seal 8 and the shaft
is arranged to be rotated in the reaction chamber 1. In the centre of the mixer shaft
6 is a liquid-feed channel 9, from which run radial drill holes 10, which end at the
outer surface of the mixer shaft and are set opposite to each other. The drill holes
are arranged at an angle of 180° opposite to each other. At the first end of the liquid-feed
channel 9 and the mixer element 6 is a liquid feed connection 13. The opposite end
of the liquid-feed channel 6 is closed. For feeding compressed gas, there are two
gas-feed channels 11 in the mixer shaft, from which transverse gas-feed drill holes
12 run to the outer surface of the mixer shaft. Compressed gas is fed to the shaft
over the gas-feed connections 15. Further, rod-like dispersion pieces 14 are fitted
to the outer surface of the mixer element. These dispersion pieces 14 run in a spiral
around the mixer shaft 6 and at least some of them extend to close to the internal
wall of the reaction chamber.
[0020] The method and apparatus according to the invention operate in the following marmer.
[0021] The material to be moisturized, for example still hot dusting ash from a power plant,
is fed from above through the feed connection 2 to the reaction chamber 1. The direction
of flow is thus according to gravity from top to bottom and the substance should flow
from the feed connection over the mixer element to the exit connection. In the chamber,
the ash is moisturized, in order to finally extinguish and cool it and to prevent
it releasing dust in the next processing stage. The mixer shaft is rotated at a speed
of about 500 - 600 1/min while compressed air obtained from a normal compressed-air
network at a pressure of 3 - 8 bar is fed through the gas holes 12. Water at the factory's
raw-water pressure of 2 - 4 bar is fed in turn from the liquid drill holes 10. The
water-feed drill holes 10 are dimensioned in such a way that the water being fed forms
droplets when it leaves the drill holes 10. The water in the form of drops is distributed
evenly over the substance being moisturized, so that the result of the moisturizing
is more even and lumping cannot easily occur. Another factor that substantially affects
the evenness of the moisturizing is the effect of the large volume of compressed air
fed through the compressed-air feed drill holes. The volume of compressed air bulks
material being moisturized and being fed through the rotating shaft creates a flow
with powerful vortices, which prevents the dusting substance from adhering together
and forming lumps due to the effect of water. Thus the compressed air homogenizes
the flow of substance and bulks the substance being fed, in order to facilitate its
mixing with water. The amount of compressed air must be reasonable, in order to ensure
bulking.
[0022] The dispersion pieces 14 rotate at high speed in the reaction chamber and further
mix the flows in the chamber and break up lumps. Their most important function is,
however, to keep the walls of the reaction chamber clean by preventing the moisturized
substance from sticking to the walls of the reaction chamber.
[0023] An adjustable amount of water is fed to the reaction chamber. The amount can be adjusted
using a simple setting valve. The water pressure must be sufficient to be able to
adjust it to form droplets in the water-feed drill holes. For example, the adjustment
of the amount in the moisturizing of ash is adjusted in such a way as to stop the
release of dust, but liquid water must not come from the moisturizer nor may the ash
form sludge. If dust comes from the apparatus, the amount of water is naturally increased
while if the ash forms sludge the amount of water is decreased. If it is necessary
to adjust the ratio of the liquid to the dusting substance more precisely, measurement
and automatic adjustment can be used.
[0024] The apparatus according to the invention can be manufactured from conventional construction
materials, such as carbon steel, stainless or acid-resistant steel, composite materials,
or polyethylene. If necessary, its components can be surfaced with rubber, in order
to increase wear resistance. The materials selected will of course depend on the materials
and operating conditions for which the apparatus is intended.
[0025] In addition to the above, the present invention has other embodiments as well.
[0026] In place of the mixer shaft, the compressed air and water can be fed from the internal
walls of the chamber from nozzles directed upwards against the feed direction of the
dusting material. However, in that case it will probably become quite difficult to
adjust the apparatus for the operating conditions and it may be difficult to obtain
a mixing result with the same certainty as with the apparatus described above. Even
though the apparatus is primarily a moisturizer, it can be used as a mixer, particularly
for one or more dusting substances and some liquid. Instead of air, an inert gas,
for instance, can be used as the mixing gas, if the substances being processed demand
this. The water-feed channels and air channels in the shaft can be arranged in other
ways too and particularly there can be several air channels placed around the water-feed
channels. However, there is at least one of each, as there are liquid and air feed
drill holes too. The drill holes 10, 12 can be arranged directly radially, or at an
angle, or some at an angle and some directly radially, in which case flows travelling
across each other will be obtained. The dispersion pieces 14 are preferably pin-like,
for instance round, but even wing-like pieces can be envisaged in applications, in
which there is less danger of adhesion from the substance being moisturized.
[0027] The cross-sections of the reaction chamber 1 and the feed and exit connections are
preferably rotationally symmetrical. Mixing will then function well in the reaction
chamber while the connections will be easy to manufacture and attach to the reaction
chamber. If these are of some other shape, the feed cross-section of the feed connection
should be smaller than that of the reaction chamber and the exit connection.
1. Method for mixing a liquid with a flowing solid substance, in which method:
- the flowing solid substance is fed to a reaction chamber (1),
- in the reaction chamber (1), compressed gas is fed into the flowing substance and
liquid in the form of droplets is fed as sprays,
- the flowing substance is mixed using mixer elements (6, 14), and
- the substance to be mixed is fed to the mixer elements (6, 14) from a feed connection
(2) above them and the flowing substance is removed from beneath the mixer elements
(6, 14) from an exit connection (3),
characterized in that the exit connection is at least partly in alignment with the feed connection (2)
in the vertical direction.
2. Method according to Claim 1, characterized in that the compressed gas is air and the liquid is water.
3. Method according to Claim 1 of 2, characterized in that the liquid and gas are fed through a mixer shaft (6) fitted to the central axis (4)
of the reaction chamber (1), from the outer surface of the mixer shaft (6) towards
the edges of the chamber (1), while the shaft (6) is simultaneously rotated.
4. Method according to any of the above Claims, characterized in that the liquid is fed to the apparatus along the mixer shaft (6) in the longitudinal
direction of the shaft (6) through a channel (9) formed in its centre and at least
partly through transverse, preferably radial drill holes (10) and the gas is fed correspondingly
through channels (11) in the longitudinal direction of the mixer shaft (6) and from
preferably radial, at least partly transverse drill holes (12).
5. Method according to any of Claims 1 - 4, characterized in that the flowing substance is fed to the reaction chamber from a connection (2), the diameter
of which is smaller than the diameter of the reaction chamber (1).
6. Method according to any of Claims 1 - 5, characterized in that the flowing substance is removed from the reaction chamber (1) from a connection
(3), the diameter of which is larger than the diameter of the reaction chamber (1).
7. Arrangement for mixing a liquid with a flowing solid substance, which comprises
- a reaction chamber (1),
- a connection (2) for feeding the flowing solid substance to the reaction chamber
(1),
- a connection (3) for removing the mixed substance from the reaction chamber (1),
- a connection (13) for feed the liquid to the reaction chamber (1),
- elements (6, 14) fitted to the mixing chamber (1) for mixing the flowing substance,
- elements (10) for feeding the liquid to the reaction chamber (1) in the form of
droplets,
- elements (11, 12, 15) for feeding a compressed gas to the reaction chamber (1),
- wherein the connections (2, 3) for feeding the flowing substance to the reaction
chamber (1) and for removing the mixed substance are arranged on opposite sides of
the elements (6, 14) for mixing the flowing substance,
characterized in that the connections for feeding and removing the flowing substance (2, 3) are at least
partly aligned with each other in the vertical direction.
8. Arrangement according to Claim 7, characterized by a mixer shaft (6) arranged on the central axis (4) of the reaction chamber (1), which
comprise elements (9 - 12) for feeding the liquid and the gas to the reaction chamber
from the outer surface of the shaft (6).
9. Arrangement according to Claim 8, characterized in that the elements for feeding the liquid and the gas are arranged to feed the liquid and
correspondingly the gas radially relative to the shaft.
10. Arrangement according to any of Claims 7 - 9, characterized in that the feed cross-section of the feed connection (2) for the flowing solid substance
is smaller than the reaction chamber (1) and the exit connection (3).
11. Arrangement according to any of Claims 7 - 10, characterized in that radial dispersion elements (14) are fitted to the mixer shaft (6).
12. Arrangement according to any of Claims 7 - 11, characterized in that the reaction chamber (1) is rotationally symmetrical and is arranged to be divided
along a dividing line (5) running horizontally through its central axis (4).
1. Verfahren zum Mischen einer Flüssigkeit mit einer fließfähigen Festkörpersubstanz,
bei welchem Verfahren:
- die fließfähige Festkörpersubstanz einer Reaktionskammer (1) zugeführt wird,
- der fließfähigen Substanz in der Reaktionskammer (1) komprimiertes Gas zugeführt
wird und Flüssigkeit in Form von gesprühten Tropfen zugeführt wird,
- die fließfähige Substanz unter Verwendung von Mischerelementen (6, 14) vermischt
wird, und
- die zu mischende Substanz den Mischerelementen über einen Zuführanschluss (2) von
oben zugeführt wird und die fließfähige Substanz unterhalb der Mischerelemente (6,
14) über einen Ausgangsanschluss (3) entfernt wird,
dadurch gekennzeichnet, dass der Ausgangsanschluss zumindest teilweise in vertikaler Richtung mit dem Zuführanschluss
(2) fluchtet.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das komprimierte Gas Luft und die Flüssigkeit Wasser ist.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Flüssigkeit und das Gas über eine Mischerwelle (6) zugeführt werden, die an der
Mittelachse (4) der Reaktionskammer (1) angeordnet ist, von der äußeren Oberfläche
der Mischerwelle (6) zu den Rändern der Kammer (1) hin, während die Welle (6) gleichzeitig
gedreht wird.
4. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Flüssigkeit der Vorrichtung entlang der Mischerwelle (6) in Längsrichtung der
Welle (6) über einen in ihrer Mitte ausgebildeten Kanal (9) und zumindest teilweise
über transversale, vorzugsweise radiale Bohrlöcher (10) zugeführt wird und dass das
Gas entsprechend über Kanäle (11) in Längsrichtung der Mischerwelle (6) und durch
vorzugsweise radiale, zumindest teilweise transversale Bohrlöcher (12) zugeführt wird.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die fließfähige Substanz der Reaktionskammer über einen Anschluss (2) zugeführt wird,
dessen Durchmesser kleiner als der Durchmesser der Reaktionskammer (1) ist.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die fließfähige Substanz aus der Reaktionskammer (1) über einen Anschluss (3) entfernt
wird, dessen Durchmesser größer ist als der Durchmesser der Reaktionskammer (1).
7. Anordnung zum Mischen einer Flüssigkeit mit einer fließfähigen Festkörpersubstanz,
umfassend
- eine Reaktionskammer (1),
- einen Anschluss (2) zum Zuführen der fließfähigen Festkörpersubstanz in die Reaktionskammer
(1),
- einen Anschluss (3) zum Entfernen der gemischten Substanz aus der der Reaktionskammer
(1),
- einen Anschluss (13) zum Zuführen der Flüssigkeit in die Reaktionskammer (1),
- in der Mischkammer (1) angeordnete Elemente (6, 14) zum Mischen der fließfähigen
Substanz,
- Elemente (10) zum Zuführen der Flüssigkeit in die Reaktionskammer (1) in Form von
Tropfen,
- Elemente (11, 12, 15) zum Zuführen von komprimierten Gas in die Reaktionskammer
(1),
- wobei die Anschlüsse (2, 3) zum Zuführen der fließfähigen Substanz in die Reaktionskammer
(1) und zum Entfernen der vermischten Substanz an gegenüberliegenden Seiten der Elemente
(6, 14) zum Mischen der fließfähigen Substanz angeordnet sind,
dadurch gekennzeichnet, dass die Anschlüsse zum Zuführen und Entfernen der fleißfähigen Substanz (2, 3) zumindest
teilweise in vertikaler Richtung miteinander fluchten.
8. Anordnung nach Anspruch 7, gekennzeichnet durch eine auf der Mittelachse (4) der Reaktionskammer (1) angeordnete Mischerwelle (6),
die Elemente (9 - 12) zum Zuführen der Flüssigkeit und des Gases in die Reaktionskammer
über die äußere Oberfläche der Welle (6) aufweist.
9. Anordnung nach Anspruch 8, dadurch gekennzeichnet, dass die Elemente zum Zuführen der Flüssigkeit und des Gases derart angeordnet sind, dass
die Flüssigkeit und entsprechend das Gas radial zur Welle zugeführt werden.
10. Anordnung nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass der Zuführquerschnitt des Anschlusses (2) für die fließfähige Festkörpersubstanz
kleiner ist als die Reaktionskammer (1) und der Ausgangsanschluss (3).
11. Anordnung nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass radiale Dispersionselemente (14) an der Mischerwelle (6) angeordnet sind.
12. Anordnung nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, dass die Reaktionskammer (1) rotationssymmetrisch ausgebildet ist und entlang einer horizontal
durch ihre Mittelachse (4) verlaufenden Trennlinie (5) auftrennbar ist.
1. Procédé de mélange d'un liquide avec une substance solide fluide, dans lequel :
- la substance solide fluide est alimentée à une chambre de réaction (1),
- dans la chambre de réaction (1), du gaz comprimé est amené dans la substance fluide
et un liquide sous la forme de gouttelettes est amené sous forme de sprays,
- la substance fluide est mélangée en utilisant des éléments de mélangeur (6, 14),
et
- la substance à mélanger est alimentée aux éléments de mélangeur (6, 14) depuis un
raccord d'alimentation (2) au dessus d'eux et la substance fluide est enlevée de sous
les éléments de mélangeur (6, 14) depuis un raccord de sortie (3),
caractérisé en ce que le raccord de sortie est au moins partiellement en alignement avec le raccord d'alimentation
(2) dans le sens vertical.
2. Procédé selon la revendication 1, caractérisé en ce que le gaz comprimé est l'air et le liquide est l'eau.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le liquide et le gaz sont alimentés à travers un arbre de mélangeur (6) adapté à
l'axe central (4) de la chambre de réaction (1), depuis la surface extérieure de l'arbre
de mélangeur (6) vers les bords de la chambre (1), tandis que l'arbre (6) est mis
en rotation simultanément.
4. Procédé selon l'une quelconque des revendications ci-dessus, caractérisé en ce que le liquide est alimenté à l'appareil le long de l'arbre de mélangeur (6) dans la
direction longitudinale de l'arbre (6) à travers un canal (9) formé en son centre
et au moins partiellement à travers des orifices transversaux, de préférence radiaux
(10), et le gaz est alimenté de manière correspondante à travers des canaux (11) dans
le sens longitudinal de l'arbre de mélangeur (6) et à partir de trous au moins partiellement
transversaux (12), de préférence radiaux.
5. Procédé selon l'une quelconque des revendications 1-4, caractérisé en ce que la substance fluide est alimentée à la chambre de réaction depuis un raccord (2),
dont le diamètre est inférieur au diamètre de la chambre de réaction (1).
6. Procédé selon l'une quelconque des revendications 1-5, caractérisé en ce que la substance fluide est enlevée de la chambre de réaction (1) à partir d'un raccord
(3), dont le diamètre est supérieur au diamètre de la chambre de réaction (1).
7. Disposition pour mélanger un liquide avec une substance solide fluide, qui comprend
:
- une chambre de réaction (1),
- un raccord (2) pour alimenter la substance solide fluide à la chambre de réaction
(1),
- un raccord (3) pour enlever la substance mélangée de la chambre de réaction (1),
- un raccord (13) pour alimenter le liquide à la chambre de réaction (1),
- des éléments (6, 14) adaptés à la chambre de mélange (1) pour mélanger la substance
fluide,
- des éléments (10) pour alimenter le liquide à la chambre de réaction (1) sous la
forme de gouttelettes,
- des éléments (11, 12, 15) pour alimenter un gaz comprimé à la chambre de réaction
(1),
dans laquelle les raccords (2, 3) pour alimenter la substance fluide à la chambre
de réaction (1) et pour enlever la substance mélangée sont disposés sur des côtés
opposés des éléments (6, 14) pour mélanger la substance fluide,
caractérisé en ce que les raccords pour alimenter et enlever la substance fluide (2, 3) sont au moins partiellement
alignés l'un avec l'autre dans le sens vertical.
8. Disposition selon la revendication 7, caractérisée par un arbre de mélangeur (6), disposé sur l'axe central (4) de la chambre de réaction
(1) qui comprend des éléments (9-12) pour alimenter le liquide et le gaz à la chambre
de réaction depuis la surface extérieure de l'arbre (6).
9. Disposition selon la revendication 8, caractérisée en ce que les éléments pour alimenter le liquide et le gaz sont disposés de façon à alimenter
le liquide et de manière correspondante le gaz radialement par rapport à l'arbre.
10. Disposition selon l'une quelconque des revendications 7-9, caractérisée en ce que la section transversale d'alimentation du raccord d'alimentation (2) pour la substance
solide fluide est inférieure à la chambre de réaction (1) et au raccord de sortie
(3).
11. Disposition selon l'une quelconque des revendications 7-10, caractérisée en ce que les éléments de dispersion radiaux (14) sont adaptés à l'arbre de mélangeur (6).
12. Disposition selon l'une quelconque des revendications 7-11, caractérisée en ce que la chambre de réaction (1) est symétrique en rotation et est disposée de façon à
être divisée le long d'une ligne de division (5) s'étendant horizontalement à travers
son axe central (4).
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only.
It does not form part of the European patent document. Even though great care has
been taken in compiling the references, errors or omissions cannot be excluded and
the EPO disclaims all liability in this regard.
Patent documents cited in the description