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:
Oct. 03, 1989
Filed:
Jul. 25, 1988
Applicant:
Inventor:
John B Doyle, Massillon, OH (US);
Assignee:
The Babcock & Wilcox Company, New Orleans, LA (US);
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; C01B / ; C01B / ;
U.S. Cl.
CPC ...
423239 ; 423235 ; 423244 ;
Abstract
A method and apparatus for controlling emissions of a coal fired boiler includes a hot catalytic baghouse for receiving flue gases along with injected ammonia and alkali. The alkali and ammonia react with SO.sub.x and NO.sub.x in the flue gas while particulates in the flue gas are trapped in the baghouse. The still hot but clean flue gases are supplied from the baghouse to a heat pipe air heater which also receives combustion air to be preheated before it is supplied to the boiler for combustion with coal to produce the flue gases.