Patent ID: 6199364
Filing Date: 2001-03-13
Classification: F23D,F23R

Abstract:
The improved combustion method for gas turbines to suppress the formation of air pollutants, which comprises passing gaseous fuel and admixed compressed air through a porous fiber burner face having areas that, when fired at atmospheric pressure, yield surface combustion and interspersed areas of higher porosity that yield blue flame combustion, firing said fuel and admixed air in a compact combustion zone adjacent said burner face and confined by a metal liner with multiple openings, said firing being conducted at a pressure in the range of about 3 to 20 atmospheres and at a rate of at least about 500,000 BTU/hr/sf/atm, passing cooling compressed air along said liner with some of said compressed air flowing through said openings to merge with gases of said combustion zone, and controlling said admixed air to provide an excess in the range of about 40% to 150% to maintain an adiabatic flame temperature in the range of 2600.degree. F. To 3300.degree. F., thus producing combustion gases containing not more than 5 ppm NO.sub.x and not more than 10 ppm CO and UHC, combined.