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Methods and sorbents for utilizing a hot-side electrostatic precipitator for removal of mercury from combustion gases

United States Patent

February 15, 2011
View the Complete Patent at the US Patent & Trademark Office
Methods are provided for reducing emission of mercury from a gas stream by treating the gas with carbonaceous mercury sorbent particles to reduce the mercury content of the gas; collecting the carbonaceous mercury sorbent particles on collection plates of a hot-side ESP; periodically rapping the collection plates to release a substantial portion of the collected carbonaceous mercury sorbent particles into hoppers; and periodically emptying the hoppers, wherein such rapping and emptying are done at rates such that less than 70% of mercury adsorbed onto the mercury sorbent desorbs from the collected mercury sorbent into the gas stream.
Nelson; Sidney (Hudson, OH)
Albemarle Corporation (Baton Rouge, LA)
12/ 424,186
April 15, 2009
STATEMENT REGARDING FEDERALLY SUPPORTED RESEARCH OR DEVELOPMENT The United States Government may own certain rights to the present invention pursuant to Department of Energy Contract No. DE-FC26-03NT41990 with Sorbent Technologies Corporation.