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:
Nov. 24, 2015

Filed:

Jul. 21, 2014
Applicant:

Babcock & Wilcox Power Generation Group, Inc., Barberton, OH (US);

Inventors:

Eric M Warren, Medina, OH (US);

Jeb W Gayheart, Streetsboro, OH (US);

Anthony A Silva, Wadsworth, OH (US);

Assignee:

The Babcock & Wilcox Company, Barberton, OH (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/50 (2006.01); B01D 53/81 (2006.01); B01D 53/83 (2006.01); B01D 53/86 (2006.01);
U.S. Cl.
CPC ...
B01D 53/508 (2013.01); B01D 53/8631 (2013.01); B01D 2251/404 (2013.01);
Abstract

An integrated sorbent injection, heat recovery, and flue gas desulfurization system is disclosed. A dry sorbent is injected into the flue gas upstream of the air heater. This reduces the acid dew point temperature, permitting additional heat energy to be captured when the flue gas passes through the air heater. The flue gas then passes through a desulfurization unit and through a baghouse, where solids are captured. The capture of additional heat energy permits the overall boiler efficiency to be increased while safely operating at a lower flue gas temperature. The integrated system consumes no greater quantity of sorbent than conventional methods but provides the benefit of improved plant heat rate.


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