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:
Sep. 21, 1976
Filed:
Aug. 15, 1973
Applicant:
Inventors:
Yukio Hishinuma, Hitachi, JA;
Zensuke Tamura, Hitachi, JA;
Assignee:
Hitachi, Ltd., , JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ; B01J / ;
U.S. Cl.
CPC ...
423244 ; 423522 ;
Abstract
An active carbon suspension obtained by mixing particles of active carbon with water, and flue gas containing sulfur dioxide are introduced into a desulfurization column, wherein the flue gas is contacted with the active carbon suspension. Sulfur dioxide is absorbed into the active carbon suspension, thereby purifying the flue gas. On the other hand, the absorbed sulfur dioxide is converted to sulfuric acid by a catalytic action of the active carbon in the desulfurization column, and the resulting sulfuric acid is separated from the active carbon suspension.