초록 ▼

Improved combustion of liquid fuel is achieved with a porous fiber burner by forming a mixture of the vaporized fuel and all of the desired combustion air sufficiently heated to prevent condensation of the vaporized fuel, and introducing the heated mixture into the porous fiber burner to effect flam

Improved combustion of liquid fuel is achieved with a porous fiber burner by forming a mixture of the vaporized fuel and all of the desired combustion air sufficiently heated to prevent condensation of the vaporized fuel, and introducing the heated mixture into the porous fiber burner to effect flameless combustion on the outer surface of the burner. The resulting surface combustion produces a high proportions of radiant heat and increased thermal efficiency while suppressing the formation of nitrogen oxides and other pollutants in the flue gas. Periodically, fuel gas may be supplied to the same porous fiber burner.

대표청구항 ▼

The improved combustion of liquid fuel having an end boiling point not more than about 650°F. to achieve high thermal efficiency and low NOx emission which comprises preheating the combustion air in an amount not more than 15% in excess of the stoichiometric requirement, forming prior to combustion

The improved combustion of liquid fuel having an end boiling point not more than about 650°F. to achieve high thermal efficiency and low NOx emission which comprises preheating the combustion air in an amount not more than 15% in excess of the stoichiometric requirement, forming prior to combustion a hot, completely gaseous mixture of said liquid fuel and said amount of preheated combustion air, introducing said hot mixture into a porous fiber burner containing a uniformly distributed, small amount of fine aluminum powder, effecting flameless combustion of said hot mixture on the outer surface of said burner thereby yielding hot flue gas of low NOx content below about 20 ppm, and passing said hot flue gas in countercurrent heat exchange with said combustion air for the aforesaid preheating thereof.