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:
Jul. 11, 2023
Filed:
Jun. 23, 2021
Dalian University of Technology, Liaoning, CN;
Panjin Institute of Industrial Technology, Dalian University of Technology, Liaoning Province, CN;
Gaohong He, Liaoning, CN;
Minggang Guo, Liaoning, CN;
Yan Dai, Liaoning, CN;
Xuehua Ruan, Liaoning, CN;
Panpan Mi, Liaoning, CN;
Xiaohang Yang, Liaoning, CN;
Dalian University of Technology, Liaoning, CN;
Panjin Institute of Industrial Technology, Dalian University of Technology, Liaoning Province, CN;
Abstract
A separation and purification coupled process with a high helium yield and diversified products is provided. The process is as follows. Firstly, a low-concentration helium-containing gas after being pressurized and pre-treated enters a two-stage and two-section membrane separation unit to produce a helium product with a medium concentration by concentrating stage by stage through the membrane separation unit. A part of the helium with medium concentration enters an adsorption unit for further concentration to produce a helium product above grade A.