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. 06, 2005
Filed:
Jan. 05, 2005
Dennis A. Chojnacki, Schaumburg, IL (US);
Iosif K. Rabovitser, Skokie, IL (US);
Richard A. Knight, Brookfield, IL (US);
David F. Cygan, Villa Park, IL (US);
Jacob Korenberg, York, PA (US);
Dennis A. Chojnacki, Schaumburg, IL (US);
Iosif K. Rabovitser, Skokie, IL (US);
Richard A. Knight, Brookfield, IL (US);
David F. Cygan, Villa Park, IL (US);
Jacob Korenberg, York, PA (US);
Gas Technology Institute, Des Plaines, IL (US);
Abstract
A firetube boiler furnace having two combustion sections and an in-line intermediate tubular heat transfer section between the two combustion sections and integral to the pressure vessel. This design provides a staged oxidant combustion apparatus with separate in-line combustion chambers for fuel-rich primary combustion and fuel-lean secondary combustion and sufficient cooling of the combustion products from the primary combustion such that when the secondary combustion oxidant is added in the secondary combustion stage, the NOformation is less than 5 ppmv at 3% O.