Tiny oil ignition whirlwind coal dust burner suitable for meager coal and anthracite coal

Abstract

The invention discloses a whirlwind pulverized coal burner suitable for lean coal and anthracite. It includes a cyclone burner cylinder and a guide volute made of refractory materials. The cylinder body of the cyclone burner and the guide volute are connected in series and the central axes coincide with each other. The advantages of the present invention are: during the high-efficiency and high-efficiency gasification oil gun ignition process, the high-temperature flame of the oil gun rotates forward along the tangential direction in the burner barrel, and the coal powder is introduced from the axial direction for cyclone combustion. A high-temperature zone is formed in the cylinder, which realizes the high-temperature cracking of coal powder, regenerates volatile matter, and improves the burnout rate of inferior coal; the high-temperature oil flame energy is concentrated and released in the burner cylinder, thereby directly increasing the energy per unit volume of ignition and temperature level; it is beneficial to the heat exchange between high-temperature oil fume and coal powder, and accelerates the ignition of coal powder; the burner has low resistance and can be used as the main burner in normal operation, basically without affecting the normal operation of the combustion organization.

Description

technical field [0001] The invention relates to a cyclone pulverized coal burner suitable for lean coal and anthracite. Background technique [0002] The micro-oil ignition pulverized coal burner is an essential part of the micro-oil ignition system. At present, most of the pulverized coal burners used in the micro-oil ignition system are developed based on bituminous coal. Due to the high volatile content of bituminous coal and low ignition temperature, it is easy to be ignited, so the engineering application is good. In my country, the units burning lean coal and anthracite account for a considerable part, so once the micro-oil ignition pulverized coal burner developed based on bituminous coal is used to burn low-quality coal, the pulverized coal burnout rate is very low and the combustion effect is poor. The fuel saving rate will be greatly reduced, and the pulverized coal with a low burnout rate has also brought hidden dangers to the safety of the unit. Contents of the...

AI Technical Summary

Problems solved by technology

In my country, the units burning lean coal and anthracite account for a considerable part, so once the micro-oil ignition pulverized coal burner developed based on bituminous coal is used to burn low-quality coal, the pulverized coal burnout rate is very low and the combustion effect is poor. The fuel saving rate will be greatly reduced, and this kind of pulverized coal with low burnout rate has also brought hidden dangers to the safety of the unit.

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