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. 06, 1982
Filed:
Dec. 10, 1980
Applicant:
Inventors:
Rolf Bentz, Basel, CH;
Volker Fattinger, Arlesheim, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55 59 ; 55 68 ; 55 71 ; 55 74 ; 585826 ;
Abstract
A process for recovering nitrobenzene, dichlorobenzene and/or trichlorobenzene from substantially undried exhaust gases or spent air containing these compounds, by passing said gases through a layer of silica-containing adsorbents and, after adsorption, regenerating the adsorbents by removing the sorbed compounds. The relative humidity of the waste vapors is preferably less than 50% in order to achieve an effective separation by adsorption.