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:
Dec. 30, 2025
Filed:
Nov. 02, 2022
Southwest Institute of Chemical Co., Ltd, Sichuan, CN;
Jian Chen, Sichuan, CN;
Xu Li, Sichuan, CN;
Yupeng Tao, Sichuan, CN;
Jian Wang, Sichuan, CN;
Hongyu Zhang, Sichuan, CN;
Jianfeng Zhang, Sichuan, CN;
Yun Yang, Sichuan, CN;
Yi Wu, Sichuan, CN;
Jiangtao Pu, Sichuan, CN;
SOUTHWEST INSTITUTE OF CHEMICAL CO., LTD, Sichuan, CN;
Abstract
A method for purification of high-purity or ultrahigh-purity gas by low temperature adsorption, has the following steps: adsorbing and removing impurity in feed gas at low temperature, obtaining high-purity or ultrahigh-purity product gas with a purity higher than 99.99%, vacuumizing an adsorber by using a vacuum pump during regeneration, and introducing a small amount of gas with low impurity content into the adsorber to regenerate the adsorbent while vacuumizing. The temperature of the adsorber is not obviously increased during regeneration. In this method, the adsorber does not need to be deliberately heated in the regeneration process, the consumption of a large amount of energy and materials caused by frequent heating and cooling of the adsorber is avoided.