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:
Dec. 09, 2003
Filed:
Jan. 30, 2002
Applicant:
Inventors:
Willis M. Hendricks, Gahanna, OH (US);
John J. Letcavits, Hilliard, OH (US);
Assignee:
AEP EmTech LLC, Columbus, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F23D 1/00 ; F23C 1/10 ; F23C 1/12 ; F23N 5/18 ;
U.S. Cl.
CPC ...
F23D 1/00 ; F23C 1/10 ; F23C 1/12 ; F23N 5/18 ;
Abstract
A control system for providing improved control over the combustion process of a multiple-intertube pulverized-coal burner that commonly forms a portion of a roof-fired boiler. The system utilizes actual mass fuel flow measurements to calculate corrected, optimal secondary and interjectory air demands. The corrected secondary and interjectory air demands are used by a proportional and integral control loop to regulate the respective supply of secondary and interjectory air to the combustion process of each in-service burner. The control system allows for optimal combustion of the fuel and a reduction in NO emmissions.