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. 14, 1997
Filed:
Oct. 03, 1995
Toyo Engineering Corporation, Tokyo, JP;
Abstract
A method for desulfurization of an exhaust gas by a solution containing a Mg-based desulfurizing agent, followed by an oxidation step, a double decomposition step, a separation step of separating a slurry of a mixture of Mg(OH).sub.2 and gypsum dihydrate obtained in the double decomposition step, a step of returning a Mg(OH).sub.2 slurry separated in the separation step to the desulfurization step, a step of treating a gypsum dihydrate slurry in the oxidation step to convert accompanying Mg(OH).sub.2 into MgSO.sub.4, a sedimentation separation step of separating gypsum dihydrate, and a step of returning a supernatant liquid in the sedimentation separation step to the double decomposition step to treat the supernatant liquid