contains co 2 and h 2 s gas recovery system and recovery method

A recovery system and recovery method technology, applied in the removal of gas pollutants, gas treatment, separation methods, etc., can solve the problems of heat energy increase, absorption speed decrease, etc., and achieve the effect of heat reduction and selective separation improvement
CN104936677BActive Publication Date: 2016-11-30三菱重工工程株式会社
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
三菱重工工程株式会社
Publication Date
2016-11-30

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Abstract

The system is provided with: a first heat exchanger which is interposed at an intersection between a rich solution supply line and a lean solution supply line, which has absorbed CO2 and H2S extracted from a bottom portion of an absorber, and a regenerated absorbent; a second heat exchanger which is interposed at an intersection between a semi-rich solution supply line and a branch line branched at the branch portion C from the lean solution supply line, and the lean solution; a merging portion which merges a branch line configured to supply the lean solution after heat exchange with the lean solution supply line; and a flow rate adjusting valve which is interposed in the lean solution supply line to adjust the distribution amount of the lean solution.
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Description

technical field

[0001] The present invention relates to CO contained in gasification gas obtained by gasifying, for example, coal, biomass, etc., using a gasifier. 2 and H 2 Efficient recovery of H from S 2 S containing CO 2 and H 2 S gas recovery system and method. Background technique

[0002] As a method for removing CO contained in gasification gas obtained by gasifying coal, biomass, etc. in a gasifier 2 and H 2 For the technology of acid gases such as S, so far, chemical absorption methods (for example, amine absorption liquids (for example (using N-methyldiethanolamine: MDEA and other absorption liquids)) and physical absorption methods (for example, using poly Selexol absorption solution of ethylene glycol dimethyl ether).

[0003] However, in the case of a system such as IGCC (Coal Gasification Combined Power Generation) technology, the following requirements are required.

[0004] 1) In the power generation system, in order to make the air pollutant SO X T...

Claims

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