Title:
MULTI-STAGE AMMONIA DECARBURIZATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/222082
Kind Code:
A1
Abstract:
A multi-stage ammonia decarburization method, comprising: absorbing CO2 from a process gas in an absorber (2) by using ammonia as an absorbent, wherein the absorber comprises four or more stages of absorption, and a first-stage absorption (3), a second-stage absorption (8), a third-stage absorption (12), a fourth-stage absorption (16) and an optional higher-stage absorption are provided in the flowing direction of a process gas flow; and controlling the process gas temperature of the second-stage absorption (8) and the third-stage absorption (12) to be not lower than the process gas temperature of the first-stage absorption (3), and controlling the process gas temperatures of the fourth-stage absorption (16) and the optional higher-stage absorption to be lower than the process gas temperature of the first-stage absorption (3).
Inventors:
ZHANG JUN (CN)
QI LIFANG (CN)
WANG JINYONG (CN)
LUO JING (CN)
QI LIFANG (CN)
WANG JINYONG (CN)
LUO JING (CN)
Application Number:
PCT/CN2023/095042
Publication Date:
November 23, 2023
Filing Date:
May 18, 2023
Export Citation:
Assignee:
JIANGNAN ENVIRONMENTAL TECH INC (US)
JIANGSU NEW CENTURY JIANGNAN ENVIRONMENTAL PROT INC LTD (CN)
JIANGSU NEW CENTURY JIANGNAN ENVIRONMENTAL PROT INC LTD (CN)
International Classes:
B01D53/14; B01D53/62; B01D53/78; B01D53/18
Foreign References:
| CN115105939A | 2022-09-27 | |||
| CN101909720A | 2010-12-08 | |||
| US20140178276A1 | 2014-06-26 | |||
| US20110061533A1 | 2011-03-17 | |||
| CN102078743A | 2011-06-01 | |||
| CN102688676A | 2012-09-26 | |||
| CN103007719A | 2013-04-03 | |||
| CN200880122376A | 2008-10-22 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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