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.:
Date of Patent:
Jan. 21, 2014
Filed:
Oct. 22, 2012
Nalco Company, Naperville, IL (US);
Bruce A. Keiser, Plainfield, IL (US);
Jitendra Shah, Naperville, IL (US);
John V. Meier, Chicago, IL (US);
Robert W. Dorner, Naperville, IL (US);
Jianwei Yuan, Aurora, IL (US);
Rebecca L. Stiles, Naperville, IL (US);
Wayne Carlson, Batavia, IL (US);
Darlington Mlambo, Naperville, IL (US);
Nalco Company, Naperville, IL (US);
Abstract
Disclosed are methods for controlling, mercury emissions, and more particularly, to methods for controlling mercury re-emissions from a wet flue gas desulfurizer used in a combustion process. A method of controlling mercury re-emission from a combustion process includes measuring either mercury concentration, oxidation-reduction, potential (ORP), and/or sulfide concentration within a scrubber liquor of a wet flue gas desulpherizer (wFGD); correlating the mercury concentration, ORP, and /or sulfide concentration with an amount of mercury re-emission additive required in the scrubber liquor to reduce and/or prevent mercury re-emission to a selected level; and adjusting the rate of addition of mercury re-emission additive into the scrubber liquor to attain the selected level of mercury re-emission.