초록 ▼

The invention relates to an improvement in atomizing methods and apparatus useful for combusting liquid fuel, such oil. The atomizing methods and apparatus consistently produce liquid fuel streams having vary narrow spray angles. The liquid fuel streams having very narrow spray angles can be produce

The invention relates to an improvement in atomizing methods and apparatus useful for combusting liquid fuel, such oil. The atomizing methods and apparatus consistently produce liquid fuel streams having vary narrow spray angles. The liquid fuel streams having very narrow spray angles can be produced even when a low liquid fuel flow rate is employed and even when a liquid fuel stream is atomized outside a liquid fuel passageway. The production of the constant narrow spray angle liquid fuel stream allows the atomizing apparatus to operate for a long period without causing fouling problems even if they are sufficiently recessed from internal openings of refractory ports defined in the furnace wall.

대표청구항 ▼

A process for atomizing liquid fuel to provide a liquid fuel stream in the form of a spreading spray having an outer periphery angle of less than 15°, measured from the axis of said liquid fuel stream, thus promoting effective combustion with reduced nitrogen oxide generation, said process comprisin

A process for atomizing liquid fuel to provide a liquid fuel stream in the form of a spreading spray having an outer periphery angle of less than 15°, measured from the axis of said liquid fuel stream, thus promoting effective combustion with reduced nitrogen oxide generation, said process comprising: (a) ejecting a liquid fuel stream from at least one first opening of a nozzle; (b) ejecting atomizing fluid from at least one second opening annular to said at least one first opening at a velocity of about 0.5 Mach to about 1.2 Mach toward said liquid fuel stream at a converging angle in the range of about 5°to about 30°, measured from a longitudinal axis of said nozzle, and wherein said nozzle converges to an annular edge between said at least one first opening and said at least one second annular opening.