A method for controlling flame stratified combustion of a natural gas burner

Abstract

The invention discloses a flame layered combustion control method of a natural gas burner, which has the advantages of simple operation and adaptability to on-site working conditions, wherein the installation of the heating component is carried out first, and then the allowable length of the flame is determined, and then the outer area of ​​the outer nozzle is determined. The flame range and the inner layer nozzle spray out the flame range in the inner area, and then adjust the flame range. The adjustment process includes adjusting the position of the porous flame stabilization plate and the swirl fan, and adjusting the speed of the blower according to the demand, and then adjusting the outer flame range. The protruding distance of the layer nozzle, the adjustment process is simple and convenient, and does not affect the normal operation of the equipment. After the adjustment, the output nitrogen oxide content is measured. After several adjustments, the sprayed flame reaches the predetermined allowable length of the flame, and at the same time, Very few nitrogen oxides are produced, and the entire control method is suitable for the processing of chemical products such as asphalt, and the control method is implemented in accordance with the on-site working conditions.

Description

technical field [0001] The invention relates to a control method of a special burner for asphalt mixing, in particular to a control method for flame stratified combustion of a natural gas burner. Background technique [0002] There are three main sources of nitrogen oxides in the industrial furnace and boiler industry, namely, thermal type, fuel type, and rapid type. It is because our temperature is too high, the fuel itself comes with it, and the CH free radicals produced by the decomposition of hydrocarbons volatilized during fuel combustion react with nitrogen molecules in the air to produce CHN and N, which then react with oxygen to form. The use of fuels without nitrogen molecules, such as natural gas, can remove fuel-type nitrogen oxides; in the case of low oxygen concentration, increasing the residence time of combustibles in the flame front and reaction zone reduces the production of rapid nitrogen oxides. The treatment of thermal nitrogen oxides is the main directi...

AI Technical Summary

Problems solved by technology

Existing natural gas burners still use a single-structure pipe inside, and the flame temperature of the gas injection is too high, which will still produce a large amount of nitrogen oxides, which is not environmentally friendly. The adjustment affects the production of nitrogen oxides, so the flame stratification technology of natural gas burners appeared, but the existing flame stratification technology of natural gas burners cannot reasonably adapt to the working conditions when used, and its operation is inconvenient, which affects the use

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