Verfahren zum Trocknen eines feuchten CO2-reichen Gasstroms aus einem Sauerstoffverbrennungsverfahren

Details

Veröffentlichungs-Nr.

EP2476477

Aktenzeichen

EP11150905

Anmeldetag

13. Januar 2011

Veröffentlichung

17. März 2021

Erteilung

17. März 2021

Rechtsraum

EP

IPC

B01D53/26B01D53/96F23J15/00F23L7/00

Abstract

A method for drying a wet CO 2 rich gas stream from an oxy-combustion process comprises: compressing the wet CO 2 rich gas stream (1) to a drying process operating pressure, cooling the wet CO 2 rich gas stream (1) in at least one cooler (3.1, 3.2), alternately drying the wet CO 2 rich gas stream (1) in at least one dryer (6.1, 6.2) which contains at least one desiccant bed (7.1, 7.2) and regenerating the desiccant bed (7.1, 7.2) by conducting a heated regenerating gas (9) through the dryer (6.1, 6.2) in opposite direction to the flow direction of the wet CO 2 rich gas stream (1), separating the dried CO 2 rich gas stream (1) in a purification process to a purified CO 2 gas stream and a waste gas stream rich in nitrogen and oxygen, whereby the waste gas stream rich in nitrogen and oxygen is used as regenerating gas (9), and subsequently to the regeneration the dryer (6.1, 6.2) is purged at least once by a pressurized CO 2 rich gas stream conducted from the compressor (2), and whereby the dryer (6.1, 6.2) is charged up to the drying process operating pressure with a pressurized CO 2 rich gas stream conducted from the compressor (2) before each drying process ( Fig. 1 ).

Anmelder

Firmen

General Electric Technology GmbH
Alstom Technology Ltd

Land

🇨🇭 Schweiz

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