Method for removing SOx from gas using polyethylene glycol

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United States of America Patent

PATENT NO 9017454
APP PUB NO 20110315014A1
SERIAL NO

13201521

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Abstract

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A method for removing SOx (x=2 and/or 3) from gas using a solution having polyethylene glycol as the main ingredient. First, SOx in the gas is absorbed by the solution of polyethylene glycol. Second, the solution of polyethylene glycol which has absorbed SOx is regenerated by one or more of the heating, vacuum, ultrasonic, microwave or radiation methods, thereby releasing the by-products of sulfur dioxide and sulfur trioxide. The regenerated solution of polyethylene glycol is recycled. When the water content of the regenerated solution of polyethylene glycol is high enough to affect the desulfurization, it needs to be removed. Removal methods include heating and rectification, absorption using a water absorbent, or a combination of these methods. The polyethylene glycol solution is recycled after dehydration.

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Patent Owner(s)

Patent OwnerAddress
PEKING UNIVERSITY100871 BEIJING THE SUMMER PALACE ROAD HAIDIAN DISTRICT NO 5 MUNICIPAL DISTRICT BEIJING CITY 100871
YONGFENG BOYUAN INDUSTRY CO LTDTHE SOUTH SECTION OF YONGFENG INDUSTRIAL PARK YONGFENG JIANGXI PROVINCE 331500
BEIJING BOYUAN-HENGSHENG HIGH-TECHNOLOGY CO LTDBEIJING 100190

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gao, Daolong Jiangxi Province, CN 2 3
Han, Fang Inner Mongolia, CN 20 126
Hu, Chun Beijing, CN 37 174
Wang, Jinfei Beijing, CN 14 3
Wei, Xionghui Beijing, CN 9 20
Zhang, Jianbin Beijing, CN 15 58
Zhang, Pengyan Beijing, CN 1 2
Zou, Chuan Beijing, CN 3 2

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