Patent · US Active

Method for removing SOx from gas using ethylene glycol composite solution

US9815017B2 · kind B2 · utility

0Cited by

4References

9Claims

0Family size

Assignees

Inventors

Xionghui Wei · Beijing, CN
Meihua Zou · Beijing, CN
Jun Wang · Beijing, CN
Li-Chun Chen · Baoshan, TW
Lifang Li · Longbeilingcun, CN
Yong Sun · Beijing, CN
Jiaxu LIU · Beijing, CN
Chun Hu · Beijing, CN
Xiangbin Li · 恩江镇, CN

Key dates

Filing date	Dec 3, 2014
Grant date	Nov 14, 2017
Priority date	—
Expiry date	Dec 3, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02A50/20
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An ethylene glycol composite solution is used for removing SOx from 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 SOx to absorb the SOx in the gas. The ethylene glycol composite solution loaded with absorbed SOx is 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.