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. 09, 1976
Filed:
Oct. 16, 1973
Applicant:
Inventor:
Herbert Furkert, Grosskonigsdorf, DT;
Assignee:
Chemiebau Dr. A. Zieren GmbH & Co. KG., Cologne, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423542 ; 423224 ; 423236 ; 4235 / ;
Abstract
Scrubbing solutions containing ammonium salts of weak acids are mixed with sufficient sulfuric acid to react with all the salts; the resultant solutions are evaporated by direct heat exchange with a hot SO.sub.2 -containing combustion gas to a 40-78% water content and combusted at 800.degree.-1,250.degree.C to produce the SO.sub.2 -containing combustion gas used in the evaporation step. The SO.sub.2 in the combustion gas can be processed in a conventional manner.