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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11883776 B1

PDFFull Text
Date of Patent:
Jan. 30, 2024

Filed:

Dec. 21, 2020

Systems and methods for removal of mercury and/or hydrochloric acid from gas streams using calcium-containing particles

Applicant:

Graymont (Pa) Inc., Pleasant Gap, PA (US);

Inventors:

Harold Wayne Lee, II, Ogden, UT (US);

Laura L. Kinner, Littleton, NC (US);

Douglas C. Murdock, Oak City, UT (US);

Fred Douglas Blackham, South Jordan, UT (US);

John B. Heintzelman, Draper, UT (US);

Assignee:

Graymont (PA) Inc., Pleasant Gap, PA (US);

Attorney:

Perkins Coie LLP

Primary Examiner:

Christopher P Jones

Int. Cl.
CPC ...
B01D 53/02 (2006.01); B01D 53/10 (2006.01); B01D 46/02 (2006.01); F23J 15/02 (2006.01); F23J 15/04 (2006.01); F23J 15/06 (2006.01); F23J 15/00 (2006.01); B01D 53/68 (2006.01); F23J 15/08 (2006.01); B01D 53/30 (2006.01); B01D 53/64 (2006.01);
U.S. Cl.
CPC ...
B01D 53/10 (2013.01); B01D 46/02 (2013.01); B01D 53/30 (2013.01); B01D 53/64 (2013.01); B01D 53/685 (2013.01); F23J 15/003 (2013.01); F23J 15/006 (2013.01); F23J 15/025 (2013.01); F23J 15/04 (2013.01); F23J 15/06 (2013.01); F23J 15/08 (2013.01); B01D 2251/404 (2013.01); B01D 2251/602 (2013.01); B01D 2251/604 (2013.01); B01D 2253/102 (2013.01); B01D 2253/112 (2013.01); B01D 2253/1124 (2013.01); B01D 2257/2045 (2013.01); B01D 2257/602 (2013.01); B01D 2258/0233 (2013.01); B01D 2258/0283 (2013.01); B01D 2259/40001 (2013.01); F23J 2215/30 (2013.01); F23J 2215/60 (2013.01);
Abstract

Several embodiments of the present technology are directed to the removal of one or more air pollutants using cooling and/or calcium-containing particles. In some embodiments, a method for removing air pollutants comprises flowing a gas stream having calcium-containing particles and one or more of mercury or hydrochloric acid molecules, and cooling the gas stream, thereby causing at least a portion of the calcium-containing particles to adsorb to the mercury and/or hydrochloric acid molecules in the gas stream. The method can further comprise, after cooling the gas stream, filtering the gas stream to remove at least a portion of the calcium-containing particles having adsorbed mercury and hydrochloric acid.

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