The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 14, 2017
Filed:
Dec. 03, 2014
Beijing Boyuan Hengsheng High-technology Co., Ltd, Beijing, CN;
Yongfeng Boyuan Industry Co. Ltd., Jiangxi Province, Ji'an, Jiangxi, CN;
Peking University, Beijing, CN;
Xionghui Wei, Beijing, CN;
Meihua Zou, Beijing, CN;
Jun Wang, Beijing, CN;
Li Chen, Jiangxi, CN;
Lifang Li, Jiangxi, CN;
Yong Sun, Beijing, CN;
Jiaxu Liu, Beijing, CN;
Chun Hu, Beijing, CN;
Xiangbin Li, Jiangxi, CN;
BEIJING BOYUAN HENGSHENG HIGH-TECHNOLOGY CO., LTD, Beijing, CN;
YONGFENG BOYUAN INDUSTRY CO. LTD., JIANGXI PROVINCE, Ji'an, Jiangxi, CN;
PEKING UNIVERSITY, Beijing, CN;
Abstract
An ethylene glycol composite solution is used for removing SOfrom a gas. The ethylene glycol composite solution is made by mixing ethylene glycol and/or polyethylene glycol with an organic acid and/or organic acid salt containing no nitrogen atom in a molecule. The ethylene glycol composite solution is brought into contact with the gas containing SOto absorb the SOin the gas. The ethylene glycol composite solution loaded with absorbed SOis regenerated by heating, vacuuming, gas stripping, ultrasonic treatment, microwave treatment, or radiation treatment to release by-products of sulfur dioxide and sulfur trioxide, and the regenerated ethylene glycol composite solution is recycled for use.