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:
Jun. 27, 1995
Filed:
Aug. 09, 1994
Applicant:
Inventor:
Wilhelm Heitmann, Herne, DE;
Assignee:
Huels Aktiengesellschaft, Marl, DE;
Primary Examiner:
Int. Cl.
CPC ...
C01C / ;
U.S. Cl.
CPC ...
423352 ; 423234 ; 423238 ; 4232452 ;
Abstract
A method for recovering ammonia and organic compounds from offgases contaminated with organic materials, carbon dioxide, and ammonia, using a combined absorption and rectification column is disclosed. Carbon dioxide is washed out with aqueous alkali, ammonia is drawn off as an overhead product, and the organic compounds are recovered in pure form from the bottoms product following separation-out of the alkali carbonate.