EP 3719427 A1 20201007 - CRYOGENIC DISTILLATION METHOD AND APPARATUS FOR PRODUCING PRESSURIZED AIR BY MEANS OF EXPANDER BOOSTER IN LINKAGE WITH NITROGEN EXPANDER FOR BRAKING
Title (en)
CRYOGENIC DISTILLATION METHOD AND APPARATUS FOR PRODUCING PRESSURIZED AIR BY MEANS OF EXPANDER BOOSTER IN LINKAGE WITH NITROGEN EXPANDER FOR BRAKING
Title (de)
KRYOGENES DESTILLATIONSVERFAHREN UND VORRICHTUNG ZUR ERZEUGUNG VON DRUCKLUFT MITTELS EINES EXPANDER-BOOSTERS IN VERBINDUNG MIT EINEM STICKSTOFF-EXPANDER ZUM BREMSEN
Title (fr)
PROCÉDÉ ET APPAREIL DE DISTILLATION CRYOGÉNIQUE POUR PRODUIRE DE L'AIR SOUS PRESSION AU MOYEN D'UN ACCÉLÉRATEUR DE DÉTENTE EN LIAISON AVEC UN DÉTENDEUR D'AZOTE POUR LE FREINAGE
Publication
Application
Priority
CN 2017113525 W 20171129
Abstract (en)
Provided are a method and apparatus for producing nitrogen and oxygen by means of cryogenic distillation of air. Nitrogen products are extracted only from the top of a tower. If a customer needs nitrogen with lower pressure, part of pure nitrogen which is partially located at a first nitrogen product pressure is reheated in a main heat exchanger, then decompressed to a second nitrogen product pressure by means of a nitrogen expander, further reheated by means of the main heat exchanger, and output as a low-pressure nitrogen product. The nitrogen expander can be braked by an expander booster for compressing air. By means of the method, nitrogen with different pressures can be suitably produced, and moreover, the energy consumption for producing the pressurized air can be reduced by utilizing the expansion work of nitrogen.
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP KR US)
F25J 3/04018 (2013.01 - EP); F25J 3/04024 (2013.01 - EP); F25J 3/0409 (2013.01 - EP KR US); F25J 3/04121 (2013.01 - EP); F25J 3/04218 (2013.01 - EP KR US); F25J 3/04296 (2013.01 - EP KR); F25J 3/04309 (2013.01 - EP KR US); F25J 3/04381 (2013.01 - EP); F25J 3/04387 (2013.01 - EP KR US); F25J 3/04393 (2013.01 - EP KR US); F25J 3/04412 (2013.01 - EP KR US); F25J 3/04957 (2013.01 - EP); F25J 2215/54 (2013.01 - EP); F25J 2230/24 (2013.01 - EP); F25J 2240/10 (2013.01 - EP KR US); F25J 2240/46 (2013.01 - EP KR 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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3719427 A1 20201007; EP 3719427 A4 20211201; CN 111406192 A 20200710; CN 111406192 B 20220408; KR 102389110 B1 20220421; KR 20200088399 A 20200722; US 2020355429 A1 20201112; WO 2019104524 A1 20190606
DOCDB simple family (application)
EP 17933288 A 20171129; CN 2017113525 W 20171129; CN 201780097181 A 20171129; KR 20207016963 A 20171129; US 201716768056 A 20171129