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:
Jun. 25, 2002
Filed:
Sep. 09, 1999
Applicant:
Inventors:
Louis C. Philippe, Versailles, FR;
Eric L. Duchateau, Gieres, FR;
David R. Scheeff, Marietta, GA (US);
Arie Verloop, Kirkland, WA (US);
Edward C. Dye, Bothell, WA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F23G 7/04 ; F23G 7/06 ; D21C 1/112 ;
U.S. Cl.
CPC ...
F23G 7/04 ; F23G 7/06 ; D21C 1/112 ;
Abstract
Methods are presented to increase the throughput of a recovery boiler equipped with at least primary and secondary levels of injection of air. The methods comprise operating the recovery boiler with a third level of oxidant injection below or at the same level as the secondary level, and oxygen enrichment applied to at least the secondary level and said third level.