Gas nozzle for ultra-low nitrogen suspended combustion flame

Abstract

The invention discloses a gas nozzle capable of generating an ultralow-nitrogen suspension combustion flame. The gas nozzle comprises a nozzle body; the nozzle body comprises an air inlet system, a gas inlet system, a mixing system and an ignition needle; the air inlet system comprises a cyclone impeller; the gas inlet system comprises a first gas guide pipe and at least two second gas guide pipes; the mixing system comprises a mixing chamber and a center flame stabilizing plate, the first gas guide pipe extends into the mixing chamber from the inlet end of the nozzle body, the second gas guide pipes are arranged on the wall of the mixing chamber, the first gas guide pipe and the second gas guide pipes are used for conveying gas into the mixing chamber, the cyclone impeller is arranged at the inlet end of the nozzle body and is fixedly arranged on the first gas guide pipe, and the center flame stabilizing plate is arranged in front of the cyclone impeller and is fixedly arranged on the first gas guide pipe; and the ignition needle is fixedly arranged on the outer surface of the nozzle body. The gas nozzle has the advantages that the gas can be sufficiently mixed with the air, and the gas and the air are more uniformly mixed, so that the gas is more sufficiently combusted, and the fewer nitrogen oxides (NOx) are produced.

Description

technical field [0001] The invention relates to the field of gas nozzles, in particular to an ultra-low nitrogen suspended combustion flame gas nozzle. Background technique [0002] In recent years, air pollution has been serious, and smog has appeared in a large area of ​​my country, threatening the physical and mental health of the people. The main culprit of smog is nitrogen oxides (NOx). During the combustion process of boilers, the NO and NO2 gases generated are collectively called nitrogen oxides (NOx). According to the formation mechanism of nitrogen oxides (NOx), it can be divided into thermal nitrogen oxides (NOx), fuel nitrogen oxides (NOx) and rapid nitrogen oxides (NOx). Thermal nitrogen oxides (NOx) are generated by a large amount of nitrogen in the air during the combustion process when the furnace temperature is higher than 1400°C. Therefore, for fuels with low calorific value, the amount of this type of nitrogen oxides is very small and can generally be igno...

AI Technical Summary

Problems solved by technology

However, the existing gas burners cannot fully mix the gas and air, and the gas and air are mixed unevenly, resulting in insufficient combustion, excessive exhaust emissions, and excessive nitrogen oxide (NOx) gas emissions, which cannot meet the relevant emissions requirements. Require

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