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:
Feb. 14, 1984
Filed:
Dec. 08, 1981
Tatsuo Amitani, Nagasaki, JP;
Masayoshi Kubo, Nagasaki, JP;
Kenichi Maehara, Nagasaki, JP;
Jun Izumi, Nagasaki, JP;
Hiroyuki Tsutaya, Nagasaki, JP;
Abstract
The invention relates to a process and apparatus for separating mixed gas by adsorption in which adsorption and desorption steps are repeatedly carried out in a plurality of adsorption towers in staggered timings. The invention is characterized in that upon commencement of the desorption step, mixed gas having a low adsorbate constituent gas concentration which is delivered in the initial part of a pressure-reducing period (a primary pressure-reducing period) in an adsorption tower which has completed adsorption, is fed into an adsorption tower which has finished pressure-reduction to scavenge and desorb the adsorbate constituent gas adsorbed by an adsorbent, whereby enhancement of a yield of an unadsorbate gas can be achieved as compared to scavenging desorption making use of a part of an unadsorbate gas delivered during an adsorption step.