A slit swirl low nitrogen oxide burner

Abstract

The invention relates to the technical field of burners, and in particular to a slotted swirl low NOx burner. The slotted swirl low NOx burner includes: a gas pipe, a burner and a combustion air transmission pipe; the burner is conical, and the end with the larger outer diameter of the burner is the first end, and the outer diameter of the burner is smaller. The small end is the second end; the burner is embedded in the inner cavity of the combustion air transmission pipe, and the outer wall of the first end of the burner is sealed and fixed with the inner wall of the combustion air transmission pipe; the burner is provided with a through hole along the axial direction. The first pipe section at one end of the gas pipe is inserted into the through hole of the burner from the second end of the burner to allow the gas in the gas pipe to flow into the through hole of the burner; the burner is provided with at least one strip in the burner An elongated slit extending between the first end and the second end. The slit swirl low NOx burner of the present invention has simple processing, low pressure drop and less nitrogen oxide content in the exhaust gas.

Description

technical field [0001] The invention relates to the technical field of burners, in particular to a slit swirl low-NOx burner. Background technique [0002] At present, industrial burners are widely used. Industrial burners need to consider whether the gas and combustion-supporting air can be fully mixed, whether the flame can burn stably, and more importantly, the composition and content of the emissions must be considered. Among them, the composition and content of the emissions should be considered because natural gas is High calorific value gas, when air is used as a combustion-supporting gas, will produce thermal nitrogen oxides due to high temperature. Nitrogen oxides not only affect human health, but also cause serious environmental problems such as acid rain. [0003] There are three mechanisms for the formation of nitrogen oxides, which are thermal type, rapid type, and fuel type. Thermal nitrogen oxides are formed by direct oxidation of nitrogen in the air when t...

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