A kind of high-efficiency and energy-saving smokeless coal-fired furnace and using method

Abstract

The invention discloses a high-efficiency, energy-saving smokeless coal-fired kiln and its use method, comprising a kiln body made of high-temperature-resistant bricks, a front high-temperature-resistant pillow brick and a rear high-temperature-resistant pillow brick installed on the kiln body, the A chimney is set on the kiln body above the rear high temperature resistant pillow brick, the horizontal position of the front high temperature resistant pillow brick is higher than that of the rear high temperature resistant pillow brick, and a casting is erected between the front high temperature resistant pillow brick and the rear high temperature resistant pillow brick , the casting forms an included angle of 25°-45° with the horizontal plane. The distance between the front high temperature resistant pillow brick and the upper wall of the kiln is 10-20cm. In this way, the black smoke generated by the coal in the volatile combustion stage passes through the high-temperature zone, and is fully burned again to achieve the effect of no black smoke, and reduces the pollution of carbon monoxide, polycyclic aromatic hydrocarbons, aldehydes and other pollutants to the environment, and at the same time increases the heat energy of coal combustion utilization rate.

Description

technical field [0001] The invention relates to a coal-fired furnace, in particular to a high-efficiency, energy-saving anthracite coal-fired furnace and a use method. Background technique [0002] Coal generally goes through four stages from entering the kiln to the completion of combustion: the water evaporation stage, when the temperature reaches about 105°C, all the water is evaporated; the volatile matter ignition stage, after the coal continues to absorb heat, the temperature continues to rise, and the volatile matter The precipitation, when the temperature reaches the ignition point, the volatiles start to burn. Then there is the coke combustion stage. After the volatiles in the coal are ignited and burned, the remaining solids composed of carbon and ash are coke. At this time, the coke temperature rises rapidly, and the fixed carbon burns violently, releasing a large amount of heat, forming a high temperature zone. [0003] Among them, the volatile matter is on fir...

AI Technical Summary

Problems solved by technology

If the combustion conditions are not appropriate, coal with high volatile content will easily produce unburned carbon particles, commonly known as "black smoke"; and produce more carbon monoxide, polycyclic aromatic hydrocarbons, aldehydes and other pollutants, reducing thermal efficiency

This is also the market problem of serious environmental pollution and low thermal energy utilization in coal-fired furnaces.

Images