Title:
METHOD AND SYSTEM FOR REMOVING ACID GAS FROM ETHYLENE CRACKING GAS
Document Type and Number:
WIPO Patent Application WO/2023/125006
Kind Code:
A1
Abstract:
A method for removing acid gas from ethylene cracking gas. The method comprises: sequentially subjecting ethylene cracking gas containing acid gas to first-stage supergravity amine scrubbing, second-stage supergravity amine scrubbing, and washing with water, wherein a first-stage compound amine solution is used in the first-stage supergravity amine scrubbing, and a second-stage compound amine solution is used in the second-stage supergravity amine scrubbing. In the present invention, a supergravity technique is used to intensify the amine scrubbing process, and the compound amine solutions are used in cooperation, such that the removal depth of the acid gas is greatly increased, and hydrogen sulfide and carbon dioxide can respectively reach a level of ≤ 1 μL/L without needing an alkali washing unit.
Inventors:
LI YINGWEN (CN)
HE SHENGBAO (CN)
GAO FEI (CN)
HU XUESHENG (CN)
LI WEI (CN)
LIU TAORAN (CN)
SHI WEN (CN)
LIU YILONG (CN)
HE SHENGBAO (CN)
GAO FEI (CN)
HU XUESHENG (CN)
LI WEI (CN)
LIU TAORAN (CN)
SHI WEN (CN)
LIU YILONG (CN)
Application Number:
PCT/CN2022/138975
Publication Date:
July 06, 2023
Filing Date:
December 14, 2022
Export Citation:
Assignee:
PETROCHINA CO LTD (CN)
International Classes:
B01D53/18; B01D53/14; C10G70/00
Foreign References:
| CN101092576A | 2007-12-26 | |||
| CN104069716A | 2014-10-01 | |||
| JP2004175729A | 2004-06-24 |
Other References:
JUNYING LU, SHEN YINGLAI: "Optimization and Improvement of Amine Washing System in Ethylene Plant", ETHYLENE INDUSTRY, vol. 8, no. 1, 15 February 1996 (1996-02-15), pages 59 - 62, XP093075346
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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