Filter house having catalytic filter bags for simultaneously removing NO.sub.x and particulate matter from a gas stream
AssigneeThe Babcock & Wilcox Company
InventorEdward A. Pirsh
Life of this patent
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Abstract
A filter house (12) employing a selective catalytic reduction process for removing NO.sub.x emissions from a flue gas stream while simultaneously filtering out and collecting entrained particulate matter from the stream. Accordingly, the filter house (12) includes flue gas inlet and outlet passages (18, 30) and a plurality of porous filter bags. The bags are treated with a suitable catalyst to facilitate the selective catalytic reduction process.
Claims3
An improved filter house for simultaneously cleansing a gas stream of NOx and entrained particulate matter, the filter house including a housing, a gas-flow inlet attached to the housing, a gas-flow outlet attached to the housing, a hopper in registry with the housing and a plurality of fibrous fabric filter bags disposed within the housing and in gas flow communication with the gas stream, the improvement comprising the filter bags displaying an integral catalyst, selected from the group consisting of a noble metal, zirconium promoted lanthanum cuprate, an iron base ammonia decomposition catalyst and the oxides of vanadium, cobalt, molybdenum, manganese, tungsten and iron-chromium, to the gas stream to effect NOx removal from the stream.
Dependencies are inferred from the claim text.