COMPOSITE AMINE ABSORPTION SOLUTION, AND DEVICE AND METHOD BOTH FOR REMOVING CO2 OR H2S OR BOTH OF THEM

Title:

COMPOSITE AMINE ABSORPTION SOLUTION, AND DEVICE AND METHOD BOTH FOR REMOVING CO2 OR H2S OR BOTH OF THEM

Document Type and Number:

WIPO Patent Application WO/2020/153005

Kind Code:

A1

Abstract:

A composite amine absorption solution according to the present invention is an absorption solution capable of absorbing CO2 or H2S or both of them in a gas, and is prepared by dissolving (1) a linear monoamine, (2) a diamine and (3) a compound specified by chemical formula (I), e.g., a propylene glycol alkyl ether, in water. In the composite amine absorption solution, these components are multiply intertwined with one another and, as a result, the absorption of CO2 or H2S or both of them becomes satisfactory and the diffusion of the absorbed CO2 or H2S during the regeneration of the absorption solution also becomes satisfactory due to the synergetic effect of these components. As a result, the amount of water vapor in a reboiler 26 that is used in the regeneration of the absorption solution in a CO2 recovery device 12 can be decreased.　R1-O-(R2-O)n-R3・・・ (I)

Inventors:

TANAKA HIROSHI (JP)
HIRATA TAKUYA (JP)
TSUJIUCHI TATSUYA (JP)
KAMIJO TAKASHI (JP)
NOBORISATO TOMOKI (JP)

Application Number:

PCT/JP2019/047448

Publication Date:

July 30, 2020

Filing Date:

December 04, 2019

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND ENG LTD (JP)
KANSAI ELECTRIC POWER CO (JP)

International Classes:

C01B17/16; B01D53/14; B01D53/52; B01D53/62; B01D53/78; B01D53/96; C01B32/50; C07C43/11; C07C43/13; C07C215/08

Domestic Patent References:

WO2006107026A1	2006-10-12
WO2015066807A1	2015-05-14

Foreign References:

JP2018122242A	2018-08-09
JPS6227021A	1987-02-05
US20170225118A1	2017-08-10
JP2013111550A	2013-06-10
JPH0751537A	1995-02-28
US4705673A	1987-11-10
JP2009521313A	2009-06-04

Other References: