A kind of multi-oxygen oblique flame burning method and burning device of flat glass melting furnace

Abstract

The invention relates to an oxygen-rich inclined-flame combustion method of a flat glass melting furnace and a combustion device. The combustion device comprises a feeder nose, a melting part, a neck and a cooling part. A breast wall is arranged outside the melting part. The breast wall, close to left and right sides of the feeder nose, is provided with smoke vents. Several oxygen-rich inclined-flame combustors are arranged at intervals at left and right sides of the breast wall. The included angle between flame of the oxygen-rich inclined-flame combustors and the breast wall is 30-150 degrees. Each oxygen-rich inclined-flame combustor contains a spray gun and a burner block, wherein the spray gun comprises an oxygen spray gun and a fuel spray gun. The oxygen-rich inclined-flame combustor also comprises a control part which adopts subsection control. According to a temperature curve of a glass melting furnace, distribution ratio of each section of combustor for conveying fuel is set. By an oxygen-rich inclined-flame combustion mode, temperature field and airflow field inside the glass melting furnace are optimized, heat exchange efficiency can be enhanced, erosion of exhaust gas to furnace crown is minimized, and service life of the glass melting furnace is prolonged.

Description

technical field [0001] The invention relates to the technical field of glass melting furnaces, in particular to a multi-oxygen oblique flame combustion method and a combustion device for a flat glass melting furnace. Background technique [0002] The flat glass industry is a high-energy-consuming industry, and fuel costs account for a large proportion in the production of flat glass. The main fuels for glass production are: heavy oil, coal tar, natural gas, coal gas, petroleum coke powder, etc. Flat glass melting furnaces are divided into float kiln, upper kiln, flat drawing kiln and calendering kiln according to different forming methods. Existing flat glass melting furnaces usually adopt horizontal flame air regenerative combustion, and are mainly composed of regenerators, small furnaces, burners, reversing devices and other equipment. The air regenerative combustion needs to change the fire regularly through the reversing device to realize the heat exchange between the ...

AI Technical Summary

Problems solved by technology

Combustion on one side of the switch makes the temperature distribution in the kiln uneven, and during the process of changing the fire, the flame in the kiln is lost instantly, resulting in fluctuations in the kiln temperature and kiln pressure

Due to the needs of the small furnace structure, it must occupy a wider position along the length of the pool wall, so the layout of the spray gun is limited

[0003] The oxygen content in the air is about 21%, and the nitrogen content is about 78%. During the combustion process, only oxygen participates in the combustion reaction, and nitrogen is only used as a diluent. A large amount of nitrogen absorbs the heat released by the combustion reaction, and nitrogen reacts with oxygen at high temperature A large amount of nitrogen oxides are produced and discharged into the atmosphere along with the flue gas, which not only causes energy waste, but also causes air pollution

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