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:
Jun. 19, 2018
Filed:
Oct. 13, 2014
Beijing Boyuan Hengsheng High-technology Co., Ltd, Beijing, CN;
Yongfeng Boyuan Industry Co. Ltd., Ji'an, Jiangxi, CN;
Peking University, Beijing, CN;
Xionghui Wei, Beijing, CN;
Meihua Zou, Beijing, CN;
Shaoyang Sun, Beijing, CN;
Yong Sun, Beijing, CN;
Jiaxu Liu, Beijing, CN;
Jun Wang, Beijing, CN;
Jianbai Xiao, Beijing, CN;
Lifang Li, Jiangxi, CN;
Li Chen, Jiangxi, CN;
Chun Hu, Beijing, CN;
Xiangbin Li, Jiangxi, CN;
Mingjin Wan, 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
A method for removing SOfrom a gas by using a compound alcohol-amine solution is provided. The compound alcohol-amine solution is made by mixing ethylene glycol and/or polyethylene glycol with hydroxyl and/or carboxyl organic compound having basic group containing nitrogen. The compound alcohol-amine solution is contacted with the gas containing SOto absorb the SOin the gas, wherein x=2 and/or 3. The compound alcohol-amine solution with absorbed SOis regenerated by one or more of heating method, vacuum method, gas stripping method, ultrasonic method, microwave method, and radiation method to release by-products of sulfur dioxide and sulfur trioxide, and the regenerated compound alcohol-amine solution is recycled for use. This method can be used for removing SOfrom flue gas, burning gas, coke-oven gas, synthesis waste gas from dyestuff plants, sewage gas from chemical fiber plants, and other industrial raw material gases or waste gases containing SO.