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:
Oct. 31, 2000
Filed:
Jul. 10, 1998
Applicant:
Inventors:
Theo Risse, Werne, DE;
Lourencedilla.o Ferrao, Dinslaken, DE;
Assignee:
Lurgi Lentjes Bischoff GmbH, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
422171 ; 422168 ; 422170 ; 422172 ;
Abstract
An apparatus for removing SO.sub.2 from flue gas treats the hot flue gas with a sump liquid to quench the flue gas and saturate it with water while concentrating ammonium sulfate in the recycled liquid. The gas is then scrubbed in a packed scrubbing zone with a solution of ammonia water, untreated recycled ammonium sulfite and ammonium hydrogen sulfite, and ammonium sulfate solution from an oxidizer to which a partial stream of the scrubbing liquid is fed.