LOW NOX PREMIX BURNER APPARATUS AND METHODS

• Main Authors: HAYES, R. ROBERT, BUSSMAN, WESLEY R, POE, ROGER, VENIZELOS, DEMETRIS, WAIBEL, RICHARD T
• Format: Patent
• Language: English; French
• Published: 22.08.2006
• Subjects: AIR; BLASTING; BURNERS; CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FORCOMBUSTION CHAMBERS, e.g. FIREBRIDGES; COMBUSTION APPARATUS; COMBUSTION PROCESSES; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDEDFOR; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS INCOMBUSTION CHAMBERS; HEATING; LIGHTING; MECHANICAL ENGINEERING; METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTIONAPPARATUS; WEAPONS

Low NO x axial premix burner apparatus and methods for burning fuel gas a re provided by the present invention. The methods of the invention are basicall y comprised of the steps of mixing a first portion of the fuel gas and all of the air to form a lean primary fuel gas-air mixture, discharging the lean primary fuel gas-air mixture into the furnace space whereby the mixture is burned in a primary combustion zone therein, discharging a second portion of the fuel gas into t he primary combustion zone to stabilize the flame produced therein and discharging the remaining portion of the fuel gas into a secondary combustion zone in the furnace space.