EP 3164654 B1 20200729 - METHOD AND DEVICE FOR THE LOW-TEMPERATURE SEPARATION OF AIR AT VARIABLE ENERGY CONSUMPTION
Title (en)
METHOD AND DEVICE FOR THE LOW-TEMPERATURE SEPARATION OF AIR AT VARIABLE ENERGY CONSUMPTION
Title (de)
VERFAHREN UND VORRICHTUNG ZUR TIEFTEMPERATURZERLEGUNG VON LUFT MIT VARIABLEM ENERGIEVERBRAUCH
Title (fr)
PROCÉDÉ ET DISPOSITIF DE FRACTIONNEMENT DE L'AIR À BASSE TEMPÉRATURE À CONSOMMATION D'ÉNERGIE VARIABLE
Publication
Application
Priority
- EP 14002307 A 20140705
- EP 2015001284 W 20150625
Abstract (en)
[origin: WO2016005030A1] The invention relates to a method and to a device used to variably obtain a compressed-gas product (72; 73) by means of the low-temperature separation of air in a distillation column system, which distillation column system comprises a high-pressure column (21) and a low-pressure column (22). The entire feed air is compressed in a main air compressor (2) to a first pressure, which is at least 4 bar higher than the operating pressure of the high-pressure column (21). A first partial flow (8, 11, 14) of the feed air (7) compressed in the main air compressor (2) is cooled in a main heat exchanger (13) to an intermediate temperature and expanded in a first air turbine (15) in such a way that work is performed and is introduced into the distillation column system (40; 18, 19, 20). A second partial flow (12, 27, 29, 30) of the feed air compressed in the main air compressor (2) is post-compressed in a first post-compressor (9), cooled in the main heat exchanger (13), and then expanded (31) and introduced into the distillation column system. A first product flow (69; 75) is removed from the distillation column system in the liquid state, subjected to a pressure increase (71; 76) to a first product pressure, evaporated or pseudo-evaporated and heated in the main heat exchanger (13), and obtained as a first compressed-gas product (GOX IC; GAN IC). The entire feed air is compressed in a multi-stage main air compressor (2) from an inlet pressure to a final pressure. At least at times, a part (65) of the first partial flow (16) of the feed air expanded in such a way that work is performed is mixed with the total air flow downstream of the first stage of the main air compressor (2). In a first operating mode, a first amount of first compressed-gas product is obtained, and, in a second operating mode, a second, smaller amount is obtained. In the first operating mode, a first amount of air (65, 66) expanded in such a way that work is performed, which first amount can also be zero, is compressed in the main air compressor (2), and, in the second operating mode, a second, larger amount is compressed in the main air compressor.
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: CN EP RU US)
F25J 3/04018 (2013.01 - RU US); F25J 3/04024 (2013.01 - RU US); F25J 3/0403 (2013.01 - CN EP RU US); F25J 3/04054 (2013.01 - CN EP RU US); F25J 3/04084 (2013.01 - CN EP RU US); F25J 3/0409 (2013.01 - CN EP RU US); F25J 3/04175 (2013.01 - CN EP RU US); F25J 3/042 (2013.01 - CN EP RU US); F25J 3/0429 (2013.01 - EP); F25J 3/04296 (2013.01 - CN EP RU US); F25J 3/04345 (2013.01 - CN EP RU US); F25J 3/04393 (2013.01 - CN EP RU US); F25J 3/04412 (2013.01 - CN EP RU US); F25J 3/04678 (2013.01 - CN EP RU US); F25J 3/04721 (2013.01 - CN EP RU US); F25J 3/04812 (2013.01 - CN EP RU US); F25J 2205/04 (2013.01 - CN EP US); F25J 2240/42 (2013.01 - EP US); F25J 2245/50 (2013.01 - CN EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2963367 A1 20160106; CN 106489059 A 20170308; CN 106489059 B 20191105; CN 106662394 A 20170510; CN 106662394 B 20191105; EP 3164653 A1 20170510; EP 3164654 A1 20170510; EP 3164654 B1 20200729; RU 2017103099 A 20180806; RU 2017103099 A3 20181220; RU 2017103309 A 20180806; RU 2017103309 A3 20181218; RU 2690550 C2 20190604; RU 2691210 C2 20190611; TW 201607598 A 20160301; TW 201607599 A 20160301; US 10215489 B2 20190226; US 10458702 B2 20191029; US 2017131028 A1 20170511; US 2017153058 A1 20170601; WO 2016005030 A1 20160114; WO 2016005031 A1 20160114
DOCDB simple family (application)
EP 14002307 A 20140705; CN 201580036802 A 20150625; CN 201580036844 A 20150625; EP 15733625 A 20150625; EP 15735849 A 20150625; EP 2015001284 W 20150625; EP 2015001285 W 20150625; RU 2017103099 A 20150625; RU 2017103309 A 20150625; TW 104121751 A 20150703; TW 104121752 A 20150703; US 201515322468 A 20150625; US 201515322740 A 20150625