US 11,806,665 B2
Sorbents for the oxidation and removal of mercury
John H. Pavlish, East Grand Forks, MN (US); Edwin S. Olson, Grand Forks, ND (US); and Michael J. Holmes, Thompson, ND (US)
Assigned to Midwwest Energy Emissions Corp., Corsicana, TX (US)
Filed by Midwest Energy Emissions Corp., Corsicana, TX (US)
Filed on Mar. 23, 2021, as Appl. No. 17/209,720.
Application 12/201,595 is a division of application No. 11/209,163, filed on Aug. 22, 2005, granted, now 7,435,286.
Application 12/201,595 is a division of application No. 11/209,163, filed on Aug. 22, 2005, granted, now 7,435,286.
Application 17/209,720 is a continuation of application No. 15/853,029, filed on Dec. 22, 2017, granted, now 11,179,673.
Application 15/853,029 is a continuation in part of application No. 15/295,594, filed on Oct. 17, 2016, abandoned.
Application 15/295,594 is a continuation of application No. 14/102,896, filed on Dec. 11, 2013, granted, now 9,468,886.
Application 14/102,896 is a continuation of application No. 12/429,058, filed on Apr. 23, 2009, granted, now 8,652,235.
Application 12/429,058 is a continuation in part of application No. 12/201,595, filed on Aug. 29, 2008, abandoned.
Application 15/853,029 is a continuation in part of application No. 15/382,114, filed on Dec. 16, 2016, granted, now 10,828,596.
Application 15/382,114 is a continuation in part of application No. 14/712,558, filed on May 14, 2015, granted, now 10,589,225.
Application 14/712,558 is a continuation of application No. 13/966,768, filed on Aug. 14, 2013, granted, now 8,821,819.
Application 13/966,768 is a continuation of application No. 13/427,665, filed on Mar. 22, 2012, granted, now 8,512,655.
Application 13/427,665 is a continuation of application No. 12/419,219, filed on Apr. 6, 2009, granted, now 8,168,147.
Application 12/419,219 is a continuation of application No. 12/201,595, filed on Aug. 29, 2008, abandoned.
Application 15/382,114 is a continuation in part of application No. 14/195,360, filed on Mar. 3, 2014, granted, now 9,669,355.
Application 14/195,360 is a continuation of application No. 10/554,018, filed on Jan. 23, 2007, granted, now 8,173,566.
Claims priority of provisional application 60/605,640, filed on Aug. 30, 2004.
Claims priority of provisional application 61/773,549, filed on Mar. 6, 2013.
Claims priority of provisional application 60/464,868, filed on Apr. 23, 2003.
Prior Publication US 2021/0354083 A1, Nov. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 53/04 (2006.01); B01D 53/64 (2006.01); B01J 20/34 (2006.01); B01J 20/22 (2006.01); B01J 20/28 (2006.01); B01J 20/20 (2006.01); B01J 20/12 (2006.01); B01J 20/10 (2006.01); B01J 20/04 (2006.01); B01J 20/02 (2006.01); B01D 53/10 (2006.01); B01D 53/83 (2006.01)
CPC B01D 53/64 (2013.01) [B01D 53/04 (2013.01); B01D 53/10 (2013.01); B01D 53/83 (2013.01); B01J 20/027 (2013.01); B01J 20/0262 (2013.01); B01J 20/04 (2013.01); B01J 20/041 (2013.01); B01J 20/043 (2013.01); B01J 20/10 (2013.01); B01J 20/106 (2013.01); B01J 20/12 (2013.01); B01J 20/20 (2013.01); B01J 20/223 (2013.01); B01J 20/28004 (2013.01); B01J 20/3416 (2013.01); B01D 2251/108 (2013.01); B01D 2251/206 (2013.01); B01D 2253/102 (2013.01); B01D 2257/602 (2013.01); B01D 2258/0283 (2013.01); B01J 2220/42 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of separating mercury from a mercury-containing gas, the method comprising:
combusting in a combustion chamber
coal fed to the combustion chamber, and
a halogen or halide promoter, a promoter precursor that transforms into the promoter, or combination thereof, added to the coal, added to the combustion chamber, or a combination thereof,
to provide the mercury-containing gas, wherein
the mercury-containing gas comprises the halogen or halide promoter,
the halogen or halide promoter and promoter precursor comprises chlorine (Cl2), chloride (Cl−), bromine (Br2), bromide (Br−), iodine (I2), iodide (I−), or a combination thereof, and
the Cl2, Cl−, Br2, Br−, I2, I−, or the combination thereof added to the combustion chamber, added to the coal, or a combination thereof is about 1 to about 3000 ppmw per weight of the coal fed to the combustion chamber;
adding an ammonium salt into the mercury-containing gas;
adding a sorbent material into the mercury-containing gas downstream of the combustion chamber such that the sorbent material contacts the halogen or halide promoter in the mercury-containing gas;
contacting mercury in the mercury-containing gas with the sorbent material, to form a mercury/sorbent composition; and
separating the mercury/sorbent composition from the mercury-containing gas.