초록 ▼

An improved burner for the combustion of coal, oil or gas places a plurality of retractable and rotatable gas elements in close proximity to the outlet end of a tubular burner nozzle of the burner which are shielded from combustion air provided around the tubular burner nozzle by a flame stabilizing

An improved burner for the combustion of coal, oil or gas places a plurality of retractable and rotatable gas elements in close proximity to the outlet end of a tubular burner nozzle of the burner which are shielded from combustion air provided around the tubular burner nozzle by a flame stabilizing ring having a plurality of openings adapted to closely receive each of the plurality of retractable and rotatable gas elements. Eddies produced by the flame stabilizing ring create a low oxygen/fuel rich flame resulting in reduced NOx formation.

대표청구항 ▼

A burner for the combustion if coal, oil or gas, comprising: a tubular burner nozzle having an inlet end and an outlet end and which defines a central passageway for conveying primary air containing pulverized coal particles therethrough to an outlet end of the burner; a gas zone sleeve having an in

A burner for the combustion if coal, oil or gas, comprising: a tubular burner nozzle having an inlet end and an outlet end and which defines a central passageway for conveying primary air containing pulverized coal particles therethrough to an outlet end of the burner; a gas zone sleeve having an inlet end and an outlet end, concentrically arranged around the tubular burner nozzle and partially defining an annular enclosure therebetween; an inner zone sleeve having an inlet end and an outlet end, concentrically arranged around the gas zone sleeve and defining an inner annular passageway therebetween, for conveying a first portion of secondary air needed for combustion to the outlet end of the burner; a burner barrel having an inlet end and an outlet end, concentrically arranged around the inner zone sleeve and defining an outer annular passageway therebetween, for conveying a second portion of secondary air needed for combustion to the outlet end of the burner; an air separation vane, connected to an extending outwardly and circumferentially around the outlet end of the inner zone sleeve, for influencing the path of the first portion of secondary air as it exits from the burner; a retractable oil atomizer having an inlet end and an outlet end, centrally disposed and supported within the central passageway, for conveying a mixture of oil and atomizing media to an atomizer sprayer plate located at the outlet end of the atomizer at the outlet end of the burner; a plurality of retractable and rotatable gas elements, concentrically arranged around the tubular burner nozzle and extending through the annular enclosure, for conveying gas to the outlet end of the burner, having outlet ends located in close proximity to the outlet end of the tubular burner nozzle, and being shielded from the secondary air when fully inserted into the burner by; a flame stabilizing ring, attached to the outlet end of the tubular burner nozzle and which together with the tubular burner nozzle and the gas zone sleeve defines the annular enclosure therebetween, having a first portion circumferentially extending into the central passageway to define an opening therein, a second L-shaped portion attached to the first portion of the flame stabilizing ring extending circumferentially around and outwardly from the outlet end of the tubular burner nozzle, and having a plurality of openings adapted to closely receive therethrough each of the plurality of retractable gas elements.