US 11,865,496 B2
Mitigation of mercury vapor emissions
Steven J. Hardwick, Newark, DE (US)
Assigned to W. L. Gore & Associates, Inc., Newark, DE (US)
Appl. No. 17/626,807
Filed by W. L. Gore & Associates, Inc., Newark, DE (US)
PCT Filed May 12, 2020, PCT No. PCT/US2020/032454
§ 371(c)(1), (2) Date Jan. 12, 2022,
PCT Pub. No. WO2020/231982, PCT Pub. Date Nov. 19, 2020.
Claims priority of provisional application 62/846,985, filed on May 13, 2019.
Prior Publication US 2022/0314164 A1, Oct. 6, 2022
Int. Cl. B01D 53/64 (2006.01); B01D 53/82 (2006.01); B01J 20/20 (2006.01); B01J 20/26 (2006.01); F23J 15/02 (2006.01)
CPC B01D 53/64 (2013.01) [B01D 53/82 (2013.01); B01J 20/20 (2013.01); B01J 20/261 (2013.01); F23J 15/02 (2013.01); B01D 2251/108 (2013.01); B01D 2253/102 (2013.01); B01D 2253/25 (2013.01); B01D 2257/602 (2013.01); F23J 2215/60 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A method comprising:
obtaining sorbent polymer composite material;
wherein the sorbent polymer composite material comprises:
a sorbent material; and
a polymer material;
contacting the sorbent polymer composite material with mercury vapor to form a used sorbent polymer composite material;
wherein the used sorbent polymer composite material comprises oxidized mercury and
wherein the used sorbent polymer composite material emits oxidized mercury vapor;
contacting the used sorbent polymer composite material with a halogen source, so as to result in a treated sorbent polymer composite material;
wherein the treated sorbent polymer composite material emits 0.01 μg to 0.10 μg less oxidized mercury vapor per minute per gram of the treated sorbent polymer composite, compared to the used sorbent polymer composite, when measured at 65° C. in air having 95% relative humidity.