EP 2788700 B1 20170719 - AIR SEPARATION METHOD AND APPARATUS
Title (en)
AIR SEPARATION METHOD AND APPARATUS
Title (de)
LUFTTRENNVERFAHREN UND -VORRICHTUNG
Title (fr)
PROCÉDÉ DE SÉPARATION D'AIR ET APPAREIL ASSOCIÉ
Publication
Application
Priority
- US 201113311038 A 20111205
- US 201213674393 A 20121112
- US 2012065001 W 20121114
Abstract (en)
[origin: US2013139547A1] A method and apparatus to produce oxygen and nitrogen co-products in which a compressed a compressed and purified air stream is cooled, fully or partially condensed and then rectified in a main distillation column to form a nitrogen-rich vapor column overhead and crude liquid oxygen. A crude liquid oxygen stream is depressurized and then stripped in an auxiliary distillation column with a stripping gas to produce an oxygen-rich liquid. The nitrogen-rich vapor column overhead from the main distillation column is used to form a nitrogen product and the crude liquid oxygen is partially vaporized to produce the stripping gas, a residual oxygen-rich liquid and liquid nitrogen reflux to the main distillation column. The oxygen product is formed from the residual oxygen-rich liquid by either providing the heat exchange duty in condensing the compressed and purified air stream or by condensing nitrogen-rich vapor used in refluxing the main distillation column.
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 3/0409 (2013.01 - EP US); F25J 3/04103 (2013.01 - EP US); F25J 3/04206 (2013.01 - EP US); F25J 3/04212 (2013.01 - EP US); F25J 3/0423 (2013.01 - EP US); F25J 3/04254 (2013.01 - EP US); F25J 3/04284 (2013.01 - EP US); F25J 3/0443 (2013.01 - EP US); F25J 3/04884 (2013.01 - EP US); F25J 2200/20 (2013.01 - EP US); F25J 2205/02 (2013.01 - EP US); F25J 2210/42 (2013.01 - EP US); F25J 2210/50 (2013.01 - EP US); F25J 2240/44 (2013.01 - EP US); F25J 2250/02 (2013.01 - EP US); F25J 2270/02 (2013.01 - 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)
US 2013139547 A1 20130606; BR 112014012911 A2 20170613; CA 2857665 A1 20130613; CN 103988037 A 20140813; CN 103988037 B 20160817; EP 2788700 A2 20141015; EP 2788700 B1 20170719; ES 2644280 T3 20171128; KR 20140103109 A 20140825; MX 2014006737 A 20140829; RU 2014127295 A 20160210; WO 2013085679 A2 20130613; WO 2013085679 A3 20150319
DOCDB simple family (application)
US 201213674393 A 20121112; BR 112014012911 A 20121114; CA 2857665 A 20121114; CN 201280059867 A 20121114; EP 12794600 A 20121114; ES 12794600 T 20121114; KR 20147014867 A 20121114; MX 2014006737 A 20121114; RU 2014127295 A 20121114; US 2012065001 W 20121114