PRODUCING LNG FROM METHANE CONTAINING SYNTHETIC GAS

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(11)

EP 4 123 251 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	10.05.2023 Bulletin 2023/19

(43)	Date of publication A2:
	25.01.2023 Bulletin 2023/04

(21)	Application number: 22181689.5

(22)	Date of filing: 28.06.2022

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International Patent Classification (IPC):

F25J 3/00^(2006.01)

F25J 3/02^(2006.01)

(52)	Cooperative Patent Classification (CPC):
	F25J 3/0223; F25J 3/0233; F25J 2205/04; F25J 2240/02; F25J 2200/02; F25J 2200/70; F25J 2210/06; F25J 2290/34; F25J 2270/66; F25J 2270/18; F25J 2270/04; F25J 2200/76; F25J 2235/60; F25J 2215/04; F25J 2260/20; F25J 3/0271; F25J 3/0252; F25J 3/0261

(84)	Designated Contracting States:
	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 States:
	BA ME
	Designated Validation States:
	KH MA MD TN

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Priority:

28.06.2021 US 202117360031

(71)	Applicant: Air Products and Chemicals, Inc.
	Allentown, PA 18106-5500 (US)

(72)	Inventors:
	ROBERTS, Mark Julian Whitehall, 18052 (US) CHEN, Fei Whitehouse Station, 08889 (US) SHNITSER, Russell B. Coopersburg, 18036 (US)

(74)	Representative: Beck Greener LLP
	Fulwood House 12 Fulwood Place London WC1V 6HR London WC1V 6HR (GB)

(54)	PRODUCING LNG FROM METHANE CONTAINING SYNTHETIC GAS

(57) Described herein are methods and systems for producing liquefied natural gas (LNG) from a methane-containing synthetic gas (MCSG). An MCSG feed stream may be cooled and partially liquefied using one or more heat exchanger units. A first phase separator and a second phase separator in downstream fluid flow communication with the first phase separator may be used to separate the partially liquefied MCSG stream into a first residue gas stream and first and second feed streams, the first and second feed streams then being fed into a distillation column to produce an LNG stream and a second residue gas stream.

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