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:
Aug. 07, 2007
Filed:
Dec. 11, 2003
Applicants:
Kurt Agerbæk Christensen, Birkerød, DK;
Peter Schoubye, Hørsholm, DK;
Inventors:
Kurt Agerbæk Christensen, Birkerød, DK;
Peter Schoubye, Hørsholm, DK;
Assignee:
Haldor Topsoe A/S, Lyngby, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 17/74 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for production of sulphuric acid comprising condensing sulphuric acid vapour from a gas mixture containing 0.01 to 10 vol. % of HSOvapour calculated at complete hydration of SOin the gas to HSOand 0 to 50 vol. % of water vapour by cooling of the gas in a sulphuric acid tower, wherein a stream containing NHis added upstream of the tower in an amount corresponding to 0.01-100 ppm NHby vol. in the gas stream at the entry of the tower.