Method for removing SOx from gas with modified polyethylene glycol

US9795917B2 · kind B2 · utility

Assignees

• BEIJING BOYUAN HENGSHENG HIGH-TECHNOLOGY CO., LTD. · CN
• YONGFENG BOYUAN INDUSTRY CO., LTD., JIANGXI PROVINCE · CN
• Peking University · CN

Inventors

• Xionghui Wei · Beijing, CN
• Shaoyang Sun · Beijing, CN
• Meihua Zou · Beijing, CN
• Jianbai Xiao · Beijing, CN
• Lifang Li · Longbeilingcun, CN
• Li-Chun Chen · Baoshan, TW
• Chun Hu · Beijing, CN
• Xiangbin Li · 恩江镇, CN
• Mingjin Wan · 恩江镇, CN

Key dates

• Filing date: Sep 4, 2014
• Grant date: Oct 24, 2017
• Expiry date: Sep 4, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A50/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for removing SOx from a gas by using a modified polyethylene glycol solution to absorb the SOx in the gas. The modified polyethylene glycol solution is contacted with the gas containing SOx to absorb the SOx in the gas, wherein x=2 and/or 3, the modified polyethylene glycol is a product derived from etherifying hydroxyl groups in the molecules of ethylene glycol and/or polyethylene glycol and has a general formula: R1—(O—C2H4)n—O—R2, where n is a positive integer, R1 and R2 are the same or different and are each independently alkyl, alkenyl, alkynyl, acyl or aryl.