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:
Apr. 02, 2002
Filed:
Aug. 03, 2000
Teisuke Maekawa, Shinjuku-ku, JP;
Taikisha Ltd., , JP;
Abstract
A gas treatment system for separating and eliminating gaseous hydrocarbon from treatment-object gas exhausted from, for example, a factory is disclosed. The system includes a rotary adsorbing-desorbing concentration device including a gas-permeable adsorbing rotor having adsorbent as a main component thereof, the rotor having in a rotational region thereof an adsorbing area for allowing passage of treatment-object gas containing gaseous hydrocarbon through a rotor portion corresponding thereto and a desorbing area for allowing passage of desorbing-concentrating gas through a rotor portion corresponding thereto, the adsorbing area and the desorbing area being arranged side by side and separated from each other along a rotational direction of the rotor, an adsorbing-desorbing recovery device for selectively effecting an adsorbing process for causing the desorbing-concentrating gas past the desorbing area to pass an adsorbent layer and a desorbing process for causing desorbing-recovering gas to pass the adsorbent layer, and a condensing recovery device for cooling adsorbing-recovering gas past the adsorbent layer so as to condense the gaseous hydrocarbon contained therein and then separating and recovering this condensed hydrocarbon from the gas. In this system, a desorbing-concentrating gas return passage is provided for returning desorbing-concentrating gas past the adsorbent layer after the desorbing layer to cause this desorbing-concentrating gas together with the treatment-object gas to pass the adsorbing area.