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제목 CO2 CAPTURE FROM A GAS STREAM BY MEANS OF A ABSORPTION SOLUTION COMPRISING AMINES
작성자 KCRC 등록일 2019-01-09 조회수 52

 

CO2 CAPTURE FROM A GAS STREAM BY MEANS OF A ABSORPTION SOLUTION COMPRISING AMINES

문헌번호

EP 2934724 B1 (2019.01.02)

출원번호

2013-821740 (2013.11.21)

출원인

ExxonMobil Research and Engineering Company

발명자

KORTUNOV, Pavel | SISKIN, Michael

Current IPC

(Main)

B01D-053/14

 

 

우선권번호

US 61/745026 (2012.12.21)

 

 

요약

Promoter amines are used to enhance CO2 uptake by sterically hindered or tertiary amines. The promoter amines can be cyclic amines, including aromatic cyclic amines or bridged cyclic amines. The combination of a promoter amine plus a sterically hindered or tertiary amines allows for improved uptake kinetics while reducing or minimizing the amount of formation of carbamate salts. The promoted sterically hindered or tertiary amines can be used as part of a CO2 capture and release system that involves a phase transition from a solution of amine-CO2 products to a slurry of amine-CO2 precipitate solids.

대표청구항

A method for separating carbon dioxide from a gas stream, comprising: contacting a gas stream containing CO2 in a sorption zone with an aqueous sorption solution comprising a promoter amine and at least one of a sterically hindered amine and a tertiary amine, the aqueous sorption solution having a total amine concentration of at least 3.0 M, at a temperature of at least 10°C to sorb at least a portion of the CO2 into the aqueous sorption solution and form a rich stream of the sorbed CO2 in the aqueous sorption solution comprising one or more amine-CO2 reaction products dissolved in the aqueous sorption solution;passing the rich stream from the sorption zone to a second zone and precipitating at least a portion of the amine-CO2 reaction products to form a precipitate slurry;separating the precipitate slurry to form a portion enriched in precipitate solids and a first recycle stream, the first recycle stream comprising a majority of the solvent from the precipitate slurry; andpassing the portion enriched in precipitate solids to at least one regeneration zone and desorbing the sorbed carbon dioxide as gas to form a second recycle stream, the second recycle stream containing a lower concentration of carbon dioxide than the rich stream and containing an increased concentration of total amine relative to the rich stream,wherein the aqueous sorption solution comprises at least a portion of the first recycle stream and at least a portion of the second recycle stream, andwherein the promoter amine comprises piperazine, piperidine, bridged derivatives of piperidine and piperazine, 4-dimethylamino pyridine, N-methyl imidazolineor a derivative of piperazine or piperidine that includes at least one tertiary amine.

WIPS 패밀리

CA2895228A1 | CN104870075A | EP2934724B1 | IN05354/DELNP/2015 | RU0002637336C2 | US61/745026 | US9707512B2 | WOWO2014-099241A2

 

이전글/다음글
첨부파일 ep00002934724b1p.pdf
이전글 Single compression system and process for capturing carbon dioxide
다음글 Process and system for conversion of carbon dioxide to carbon monixide