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1. (WO2001035022) AIR STAGED LOW-NOx BURNER

Pub. No.:    WO/2001/035022    International Application No.:    PCT/US2000/041596
Publication Date: Fri May 18 01:59:59 CEST 2001 International Filing Date: Fri Oct 27 01:59:59 CEST 2000
IPC: F23C 6/04
F23C 7/00
F23C 7/06
F23M 5/02
Applicants: BLOOM ENGINEERING COMPANY, INC.
PISANO, Stephen, P.
FENNELL, Anthony, G.
HEMMERLIN, John, R.
BAGGLEY, Glenn, W.
DORMIRE, John, C.
Inventors: PISANO, Stephen, P.
FENNELL, Anthony, G.
HEMMERLIN, John, R.
BAGGLEY, Glenn, W.
DORMIRE, John, C.
Title: AIR STAGED LOW-NOx BURNER
Abstract:
An apparatus and method for using staged air combustion. The apparatus includes a burner body (10) secured to a port block (42), and a fuel passageway (12) extending through the burner body (10), terminating in a fuel nozzle (22), which injects fuel into the burner throat (40). Primary air jets (20) are configured to inject primary air into a primary combustion region (24), which is normally in the burner throat (40). A dish with a dish surface (28) is connected to the burner throat (40); the dish surface (28) extending in a divergent angle with respect to a burner centerline (35). Secondary air jets (34) are connected to the air passageway (14) and extend through the port block (42). The secondary air jets (34) inject secondary air into a secondary combustion region (38), which may be at the dish surface (28) or the hot face (30) of the burner.