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:
Dec. 15, 2009
Filed:
Aug. 29, 2007
Applicants:
Meredith Curren, Ottawa, CA;
Brian Foody, Ottawa, CA;
Jeff Tolan, Ottawa, CA;
Inventors:
Assignee:
Iogen Energy Corporation, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 17/69 (2006.01); C01B 17/96 (2006.01); C01C 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing ammonia and sulfuric acid from a stream comprising ammonium sulfate is provided. The process comprises the steps of heating the stream to produce ammonia and a decomposition product comprising one or more than one of a bisulfate salt, a pyrosulfate salt, or a combination thereof. The ammonia produced is recovered, and water is added to the decomposition product to produce a stream comprising the decomposition product. The stream comprising the decomposition product is processed by acid retardation to obtain a sulfuric acid stream and a stream comprising one or more than one sulfate salt.