Furnaces – With exhaust gas treatment means – Means contacting exhaust gas with liquid
Reexamination Certificate
2005-07-05
2005-07-05
Rinehart, Kenneth (Department: 3749)
Furnaces
With exhaust gas treatment means
Means contacting exhaust gas with liquid
C110S245000
Reexamination Certificate
active
06912962
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 SO2sorbent into the combustion chamber. A feed system feeds a mixture of the ash, the SO2sorbent/SO2reaction product, and unreacted SO2sorbent 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 SO2sorbent 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 SO2sorbent at a combustion temperature of 700° to 950° C.
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Morin Jean X.
Seeber Joachim
Alix Yale & Ristas, LLP
Alstom (Switzerland) Ltd.
Rinehart Kenneth
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