Process and plant for purifying crude synthesis gas

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United States of America Patent

PATENT NO 12076690
APP PUB NO 20210260521A1
SERIAL NO

17253358

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Abstract

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The invention relates to a process for removal of unwanted, in particular acidic gas constituents, for example carbon dioxide and hydrogen sulfide, from a crude synthesis gas by gas scrubbing with a scrubbing medium. According to the invention the flash gases obtained during the decompression of the laden scrubbing medium are supplied to a recompressor in order to recycle these to the crude synthesis gas and thus utilize them materially after the recompression. Alternatively or in addition the flash gases may also be supplied to a decompression turbine to recover refrigeration and mechanical work. If the recompressor and/or the decompression turbine are/is designed to have multiple stages, the flash gases obtained at different pressure levels are preferably supplied to a corresponding pressure level of the recompressor and/or of the decompression turbine.

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Patent Owner(s)

Patent OwnerAddress
L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE75007 PARIS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Corbet, Sharon Frankfurt, DE 14 6
Gubrinski, Alfred Frankfurt am Main, DE 14 12
Puri, Pankaj Crakow, PL 3 2
Rappold, Dorit Frankfurt, DE 11 7

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