Patent ID: 9555369
Date: 2017-01-31
CPC Classifications: B01D,F23J

Claim:
1. A method of treating mercury contaminated gas comprising: a. introducing a dilute aqueous hydrogen halide comprising 0.25 to 4% hydrogen halide selected from HBr and HI into a mercury contaminated gas stream containing a quantity of particulate matter at an introduction rate sufficient to create a concentration of at least 0.1 ppmvd; b. wherein greater than 50% of all particulate matter in the mercury contaminated gas stream is a native particulate matter; c. contacting a quantity of active halide with the native particulate matter; d. creating a doped particulate matter; e. coating a filtration media with the doped particulate matter; and f. passing a portion of the mercury contaminated gas stream through the doped particulate matter on the filtration media.