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:
Mar. 22, 1977
Filed:
Apr. 01, 1974
Applicant:
Inventors:
Wilhelm Berkel, Mutterstadt, DT;
Hans Gettert, Mannheim, DT;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen (Rhine), DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55 70 ; 55 68 ; 55 90 ; 55 93 ;
Abstract
Gas mixtures containing ammonia and carbon dioxide are separated by fractional absorption in a solvent. The gas mixture and solvent are intimately mixed in a zone, the residence time of the gas in the mixing zone being restricted to a maximum of 0.1 second. Non-absorbed gas and solvent are then separated from one another and the gas separated off is subjected to a further absorption if necessary.