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:
Apr. 28, 2020
Filed:
Oct. 24, 2016
Method and plant design for reduction of start-up sulfur oxide emissions in sulfuric acid production
Haldor Topsøe A/s, Kgs. Lyngby, DK;
Mårten Nils Rickard Granroth, Bunkeflostrand, SE;
Per Aggerholm Sørensen, Kgs. Lyngby, DK;
Kurt Agerbæk Christensen, Birkerød, DK;
HALDOR TOPSØE A/S, Kgs. Lyngby, DK;
Abstract
The invention is a method and a sulfuric acid plant design for reduction of start-up SO, SOand HSOemissions in sulfuric acid production, in which SO2 is converted to SOin n successive catalyst beds, where n is an integer >1. The final catalytic beds are used as absorbents for SOto SO3 during the start-up procedure, and one or more of the m beds downstream the first bed are purged, either separately or simultaneously, with hot gas, where m is an integer >1 and m<n, during the previous shut-down. Also, one separate purge with hot gas is used on the final bed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile