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.

Date of Patent:
Sep. 09, 2014

Filed:

Jul. 18, 2013
Applicant:

Alstom Technology Ltd, Baden, CH;

Inventors:

Per-Erik Albert Appelo, Knoxville, TN (US);

Dennis James Laslo, Ten Mile, TN (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/64 (2006.01); B01D 53/77 (2006.01); B01D 53/78 (2006.01); B01D 53/79 (2006.01);
U.S. Cl.
CPC ...
B01D 53/64 (2013.01);
Abstract

A method for reducing mercury emission and/or re-emission in cleaned flue gas through control of sulfite concentration within a wet flue gas desulfurization (WFGD) system is disclosed. One method for reducing mercury emission and/or re-emission through control of sulfite concentration is to measure the sulfite concentration of an aqueous alkaline slurry used in a WFGD system and comparing the same to a predetermined sulfite concentration value. If the comparison reveals the measured sulfite concentration is above the predetermined values, the amount of oxidation air supplied to the system is increased. If the comparison reveals the measured sulfite concentration is below the predetermined values, the amount of oxidation air supplied to the system is decreased.


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Appelo, Per-Erik. (2014). Sulfite control to reduce mercury re-emission (U.S. Patent No. 8828341). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8828341

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