Title:
CO2 SEPARATION METHOD, CO2 SEPARATION DEVICE, AND COMBUSTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/044481
Kind Code:
A1
Abstract:
The present invention provides a CO2 separation method and device which use a plurality of stages of separation membrane modules connected in series, wherein a decrease in CO2 permeance in a downstream separation membrane module is suppressed. Separation membrane modules 2 are each provided with a CO2 separation membrane 3 that includes a CO2 carrier, a first treatment chamber 5, and a second treatment chamber 6. In each separation membrane module 2, a mixed gas FG including a specific gas, carbon dioxide, and water vapor is supplied into the first treatment chamber 5 from one end side of the first treatment chamber 5, carbon dioxide in the mixed gas FG permeates through the CO2 separation membrane to the second treatment chamber 6 side and is separated, nonpermeable gas EG which does not permeate the CO2 separation membrane 3 and remains in the first treatment chamber 5 is discharged from the other end side of the first treatment chamber 5, and permeable gas PG which permeated through the CO2 separation membrane 3 is discharged to the outside from the second treatment chamber 6. In each separation membrane module 2 other than the most downstream separation membrane module 2, water vapor is added to the nonpermeable gas EG discharged from the first treatment chamber 5, and then that nonpermeable gas EG is supplied as mixed gas FG to the first treatment chamber 5 of the downstream separation membrane module 2.
Inventors:
OKADA OSAMU (JP)
TERAMOTO MASAAKI (JP)
HANAI NOBUAKI (JP)
TERAMOTO MASAAKI (JP)
HANAI NOBUAKI (JP)
Application Number:
PCT/JP2021/021826
Publication Date:
March 03, 2022
Filing Date:
June 09, 2021
Export Citation:
Assignee:
RENAISSANCE ENERGY RES CORP (JP)
International Classes:
B01D61/38; B01D53/22; C01B32/50
Foreign References:
| JP2017148736A | 2017-08-31 | |||
| JP2014200767A | 2014-10-27 | |||
| JP2009242773A | 2009-10-22 | |||
| JPH11200817A | 1999-07-27 |
Attorney, Agent or Firm:
MASAKI Yoshifumi (JP)
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