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Title:
DEEP PURIFICATION SYSTEM AND METHOD FOR COKE OVEN GAS
Document Type and Number:
WIPO Patent Application WO/2022/166159
Kind Code:
A1
Abstract:
The present invention belongs to the field of coke oven gas purification and provides a deep purification system and method for coke oven gas. By providing a pre-washing tower as a super-gravity rotating device, debenzolized coke oven gas can be subjected to preliminary impurity removal in the pre-washing tower by means of a super-gravity rotating technology, so that dust, benzene, tar, naphthalene, ammonia, sulfur and other harmful substances in the debenzolized coke oven gas are removed deeply, the problem that excessive sulfur and ammonia in the coke oven gas may affect stable operation of a system is solved, and the problem that the tar and naphthalene in the coke oven gas may cause blockage in a compression system is also solved. By means of devices such as a desulfurization tower, a heat regeneration tower, a washing tower, an azeotropic tower, a methanol-water separation tower, a methanol-rich flash tank, and a four-phase separator, a system for further removing complex impurities from coke oven gas by means of a low-temperature methanol washing technology is provided, so that an air purification index is ensured, and the problem that coking desulfurization waste liquid cannot be radically treated can be solved by means of a methanol regeneration cycle.

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Inventors:
WANG GUI (CN)
ZUO YONGFEI (CN)
ZHANG QIYU (CN)
SHI FUFU (CN)
FAN HUI (CN)
GUAN JIE (CN)
HAO CHENGHAO (CN)
SHANG SHUJUAN (CN)
DIAO XIUHUI (CN)
LI GANG (CN)
ZHOU ENLI (CN)
Application Number:
PCT/CN2021/113370
Publication Date:
August 11, 2022
Filing Date:
August 18, 2021
Export Citation:
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Assignee:
SEDIN ENGINEERING CO LTD (CN)
International Classes:
C10K1/00; C10K1/08
Foreign References:
CN112812854A2021-05-18
CN112210407A2021-01-12
CN102585921A2012-07-18
CN213446997U2021-06-15
CN112812852A2021-05-18
Attorney, Agent or Firm:
BEIJING HEZONG HUIXIN INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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