GAS STREAM TREATMENT PROCESS

WIPO Patent Application WO/2011/127105

A3

A process of treating a gas stream containing mercury is disclosed. The method comprises: applying a sorbent into said gas stream ahead of a particulate matter collection device, in order to adsorb at least a portion of a mercury containing compound, wherein said sorbent contains a composition comprising a compound having the following formula (SiO2)x(OH)yMzSaF: wherein M is at least one of the following metal or metalloid cations: boron, magnesium, aluminum, calcium, titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, palladium, silver, cadmium, tin, platinum, gold, and bismuth; wherein S is a sulfur-based species selected from at least one of the following: sulfide salts, dithiocarbamates, polymer-based dithiocarbamates, and polysulfide salts; wherein F optionally exists and said F is at least one of the following: a functionalized organosilane, a sulfur-containing organosilane, an amine-containing organosilane, and an alkyl-containing organosilane at a surface area coverage of 0.01 100 %; and wherein the molar ratio of y/x is equal to 0.01 0.5, the molar ratio of x/z is equal to 3 300, and the molar ratio of a/z is 1 5.

KEISER BRUCE A (US)
ERGANG NICHOLAS S (US)
MIMNA RICHARD (US)

PCT/US2011/031318

February 09, 2012

April 06, 2011

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NALCO CO (US)
KEISER BRUCE A (US)
ERGANG NICHOLAS S (US)
MIMNA RICHARD (US)

B01D53/14; B01D46/00; B01D53/46; B03C3/00

US4474896A	1984-10-02
US4094777A	1978-06-13
US20090101015A1	2009-04-23
JP2008533432A	2008-08-21
US20070122327A1	2007-05-31

YONTER, Edward O. et al. (Naperville, Illinois, US)

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