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. 30, 1993
Filed:
Apr. 13, 1992
Applicant:
Inventors:
Dennis L Glancy, Evansville, IN (US);
John W College, Pittsburgh, PA (US);
Jim Wilhelm, Sandy, UT (US);
Assignees:
Southern Indiana Gas and Electric Company, Evansville, IN (US);
Dravo Lime Company, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
42324309 ; 42324311 ;
Abstract
Sulfur dioxide is removed from a gaseous stream by contact with a lime slurry which contains sulfur to produce thiosulfate ions and 2,000-10,000 ppm of effective sodium ions to effect removal of the sulfur dioxide A bleed stream, removed from the scrubbing loop has calcium sulfite solids removed therefrom while separated liquor is returned to the scrubbing loop.