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:
Jul. 05, 2005
Filed:
Oct. 29, 2003
Jean X. Morin, Marchandon, FR;
Joachim Seeber, Wernau, DE;
Jean X. Morin, Marchandon, FR;
Joachim Seeber, Wernau, DE;
Alstom (Switzerland) Ltd., Baden, CH;
Abstract
An apparatus for the cleaning of flue gases containing ash and sulfur dioxide produced by burning sulfur-containing coal in the combustion chamber of a circulating fluidized-bed firing system includes a system for delivering a particulate SOsorbent into the combustion chamber. A feed system feeds a mixture of the ash, the SOsorbent/SOreaction product, and unreacted SOsorbent from the combustion chamber to a mixing unit. A liquid supply system supplies water or an aqueous sodium-containing solution to the mixing unit, whereby the unreacted SOsorbent is converted into a hydration product. A discharge system returns the ash, the reaction product, and the hydration product from the mixing unit into the combustion chamber, where the hydration product is reactivated into an SOsorbent at a combustion temperature of 700° to 950° C.