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:
Nov. 17, 2015
Filed:
Apr. 20, 2012
Applicants:
Rick Knoll, Calgary, CA;
Eric Pedersen, Calgary, CA;
Satish Iyer, Calgary, CA;
Inventors:
Assignee:
Sulvaris Inc., Calgary, Alberta, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C05D 9/00 (2006.01); C05D 9/02 (2006.01); C05B 3/00 (2006.01); C05B 7/00 (2006.01); C05B 17/00 (2006.01); C01B 17/765 (2006.01); C01B 17/50 (2006.01); C05B 17/02 (2006.01); C05D 1/02 (2006.01); C01C 1/242 (2006.01); C01B 17/76 (2006.01); C01B 17/96 (2006.01); C01F 11/46 (2006.01); B01D 53/52 (2006.01); C01B 25/28 (2006.01); C05C 3/00 (2006.01);
U.S. Cl.
CPC ...
C05B 17/02 (2013.01); B01D 53/52 (2013.01); C01B 17/50 (2013.01); C01B 17/76 (2013.01); C01B 17/7655 (2013.01); C01B 17/96 (2013.01); C01B 25/28 (2013.01); C01C 1/242 (2013.01); C01F 11/46 (2013.01); C05B 3/00 (2013.01); C05B 7/00 (2013.01); C05B 17/00 (2013.01); C05C 3/00 (2013.01); C05C 3/005 (2013.01); C05D 1/02 (2013.01); C05D 9/00 (2013.01); B01D 2251/11 (2013.01); B01D 2257/304 (2013.01); C05D 9/02 (2013.01);
Abstract
A method is disclosed for producing sulphate or phosphate-based fertilizer from hydrogen sulphide. The method involves feeding a stream containing a substantial volume of hydrogen sulphide and air to a furnace, where it is burned to produce a sulphur dioxide rich gas stream. The sulphur dioxide rich gas stream is then fed to a reactor to produce a sulphuric acid stream and a waste stream comprising carbon dioxide, nitrogen, oxygen, trace impurities and trace amounts of unreacted sulphur dioxide. The sulphuric acid stream is finally converted to a sulphate or phosphate-based fertilizer.