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:
Nov. 27, 2007
Filed:
Apr. 11, 2003
Tatsushi Urakami, Tsukuba, JP;
Tooru Nagasaka, Tsuchiura, JP;
Masato Kawai, Yokohama, JP;
Akihiro Nakamura, Kofu, JP;
Tatsushi Urakami, Tsukuba, JP;
Tooru Nagasaka, Tsuchiura, JP;
Masato Kawai, Yokohama, JP;
Akihiro Nakamura, Kofu, JP;
Taiyo Nippon Sanso Corporation, Tokyo, JP;
Abstract
A gas separation method is provided in which, when separating a first component and a second component from a mixed gas containing a plurality of components by using a pressure swing adsorption method, these components can be efficiently recovered and cost reduction can be achieved. Between an adsorption step and a regeneration process step, which use a first adsorption column containing a first adsorbent on which the first component is less readily adsorbable and the second component is absorbable, and a second adsorption column containing a second adsorbent on which the first component is readily adsorbable and the second component is less readily adsorbable, an equalization depressurization step and an equalization pressurization process step, in which the pressure of the first and second adsorption columns is equalized, is carried out.