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:
Jan. 15, 1991
Filed:
Jul. 18, 1988
Applicant:
Inventors:
Kazuo Haruna, Kakogawa, JP;
Kanji Ueda, Ashiya, JP;
Masahiro Inoue, Hyogo, JP;
Hitosi Someda, Kakogawa, JP;
Assignees:
Seitetsu Kagaku Co., Ltd., Hyogo, JP;
Bergwerksverband GmbH, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55 26 ; 55 31 ; 55 33 ; 55 58 ; 55 62 ; 55 68 ; 55 75 ;
Abstract
A process for producing a high purity oxygen from air by PSA which comprises connecting a first adsorption unit packed with carbon molecular sieve and a second adsorption unit packed with zeolite molecular sieve in series, conducting PSA operation separately in each of the units during the same operation cycle time, accumulating the desorption gas from the first adsorption unit in a receiver and then introducing the resulting desorption gas to the second unit as a raw material gas and to the first unit as a rinse gas.