METHOD AND DEVICE FOR CRYOGENICALLY SEPARATING A SYNTHESIS GAS CONTAINING CARBON MONOXIDE, METHANE AND HYDROGEN

Title:

METHOD AND DEVICE FOR CRYOGENICALLY SEPARATING A SYNTHESIS GAS CONTAINING CARBON MONOXIDE, METHANE AND HYDROGEN

Document Type and Number:

WIPO Patent Application WO/2015/140460

Kind Code:

A3

Abstract:

A device for cryogenically separating a synthesis gas comprises a heat exchanger (5) in which the synthesis gas is cooled, a washing column (C1), at least one conduit for conveying the cooled synthesis gas to the washing column, a conduit (19) for discharging a gas enriched in hydrogen at the head of the washing column, a column (23) for discharging a liquid enriched in carbon monoxide and/or in methane from the tank of the washing column, a conduit (61) for conveying the tank liquid or a liquid derived from the tank liquid, optionally after expansion, to a CO/CH4 separation column (C2), a conduit (25) for withdrawing a liquid enriched in methane from the tank of the CO/CH4 separation column, a conduit for withdrawing a fluid enriched in carbon monoxide from the head of the CO/CH4 separation column, means for pressurising at least a portion of the fluid enriched in carbon monoxide, a conduit for conveying at least a portion of the pressurised fluid to the head of the washing column, the washing column comprising a tank reboiler (R1) for heating the tank of the washing column.

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Inventors:

DEMOLLIENS BERTRAND (FR)
HERNANDEZ ANTOINE (FR)

Application Number:

PCT/FR2015/050643

Publication Date:

December 17, 2015

Filing Date:

March 17, 2015

Export Citation:

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Assignee:

AIR LIQUIDE (FR)

International Classes:

F25J3/02

Domestic Patent References:

WO2008148971A2	2008-12-11
WO2008064762A2	2008-06-05

Foreign References:

DE102012004047A1	2013-09-05
DE102007013325A1	2008-09-25
FR2930332A1	2009-10-23
US6578377B1	2003-06-17
DE102012020469A1	2014-04-24

Other References:

SCHOLZ W H: "LOW-TEMPERATURE TECHNOLOGY IN COAL REFINING", CEER. CHEMICAL ECONOMY AND ENGINEERING REVIEW, CHEMICAL ECONOMY RESEARCH INSTITUTE, TOKYO, JP, vol. 14, 1 January 1982 (1982-01-01), pages 22 - 31, XP008150142, ISSN: 0009-2436

Attorney, Agent or Firm:

MERCEY, Fiona (Département de la Propriété Intellectuelle7, Quai d'Orsay Paris Cedex 07, FR)

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