EP 4014001 A1 20220622 - METHOD AND UNIT FOR PROCESSING A GAS MIXTURE CONTAINING NITROGEN AND METHANE
Title (en)
METHOD AND UNIT FOR PROCESSING A GAS MIXTURE CONTAINING NITROGEN AND METHANE
Title (de)
VERFAHREN UND ANLAGE ZUR VERARBEITUNG EINES STICKSTOFF UND METHAN ENTHALTENDEN GASGEMISCHS
Title (fr)
PROCÉDÉ ET INSTALLATION POUR TRAITER UN MÉLANGE GAZEUX CONTENANT DE L'AZOTE ET DU MÉTHANE
Publication
Application
Priority
- EP 19020469 A 20190813
- EP 2020025328 W 20200710
Abstract (en)
[origin: WO2021028068A1] Proposed is a method for processing a gas mixture containing nitrogen and methane, said gas mixture being at least partly liquefied using a mixed refrigerant circuit and is expanded in a storage tank (L), wherein: formed in the storage tank (L) are a liquid phase, which is depleted in nitrogen and enriched with methane relative to the gas mixture, and a vapour phase, which is enriched with nitrogen and depleted in methane relative to the gas mixture; at least some of the vapour phase is compressed, at least partly liquefied, and subjected to low-temperature rectification (T1); and formed in the low-temperature rectification (T1) are a top gas rich in nitrogen and lean in methane, and a bottom liquid lean in nitrogen and rich in methane. The invention provides that the partial liquefaction of the vapour phase is caused by cooling by means of heat exchange using the mixed refrigerant circuit.
IPC 8 full level
F25J 1/00 (2006.01); F25J 1/02 (2006.01); F25J 3/02 (2006.01)
CPC (source: EP US)
F25J 1/0015 (2013.01 - US); F25J 1/0022 (2013.01 - EP US); F25J 1/0052 (2013.01 - EP); F25J 1/0072 (2013.01 - US); F25J 1/0212 (2013.01 - EP); F25J 1/0214 (2013.01 - US); F25J 1/0236 (2013.01 - EP); F25J 1/0291 (2013.01 - EP); F25J 3/0209 (2013.01 - EP); F25J 3/0233 (2013.01 - EP); F25J 3/0257 (2013.01 - EP); F25J 2200/02 (2013.01 - EP); F25J 2200/72 (2013.01 - EP); F25J 2205/04 (2013.01 - EP); F25J 2210/04 (2013.01 - EP); F25J 2210/42 (2013.01 - US); F25J 2210/60 (2013.01 - US); F25J 2210/90 (2013.01 - EP); F25J 2215/04 (2013.01 - EP); F25J 2220/62 (2013.01 - EP); F25J 2230/08 (2013.01 - EP); F25J 2230/30 (2013.01 - EP); F25J 2245/90 (2013.01 - EP); F25J 2260/02 (2013.01 - EP); F25J 2270/02 (2013.01 - EP); F25J 2270/12 (2013.01 - EP); F25J 2270/66 (2013.01 - EP); F25J 2290/12 (2013.01 - US); F25J 2290/34 (2013.01 - EP); F25J 2290/62 (2013.01 - EP)
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)
WO 2021028068 A1 20210218; AU 2020330316 A1 20220127; EP 4014001 A1 20220622; US 12111099 B2 20241008; US 2022316794 A1 20221006
DOCDB simple family (application)
EP 2020025328 W 20200710; AU 2020330316 A 20200710; EP 20743072 A 20200710; US 202017597006 A 20200710