Roof insulation structure of roasting furnace

Abstract

The invention relates to a roasting furnace, in particular to a roasting furnace roof heat insulating structure. The roasting furnace roof heat insulating structure comprises an upper heat insulatinglayer which is paved on a roasting furnace roof and a lower heat insulating layer which is arranged on the lower end surface of the upper heat insulating layer; the upper heat insulating layer and thelower heat insulating layer are in the thickness value ratio of (1.5 to 2.5) to 1; the upper heat insulating layer is made of coke; and the lower heat insulating layer is prepared from the followingraw materials in percentage by weight: 36 to 43 percent of coal tar and 57 to 64 percent of coke powder, wherein the particle size of the coke powder is not greater than 0.5 mm. According to the roasting furnace roof heat insulating structure, the occupied space is small; materials are convenient to select; waste coal tar and coke can be recovered and utilized; and the energy resource utilizationrate is high.

Description

technical field [0001] The invention relates to a roasting furnace, in particular to a heat preservation structure for the roof of the roasting furnace. Background technique [0002] In the roasting process in the carbon industry, the product passes through low temperature, medium temperature and high temperature in the furnace, and the volatile matter of the product is discharged, and a large amount of coal tar will be produced after passing through the electric shop. In the past, when environmental protection was not strictly controlled, coal tar was easy to sell, and no qualifications were required. Now, with the state's environmental governance and the treatment of corporate waste, the waste generated by enterprises must be treated in a scientific and environmentally friendly manner. Even if someone buys it, the buyer must have relevant qualifications. At present, the treatment of coal tar produced in the carbon industry is a big problem. In addition, the filler (coke)...

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Problems solved by technology

At present, the treatment of coal tar produced in the carbon industry is a big problem. In addition, the filler (coke) of the roaster will produce a large amount of fine powder after repeated use and crushing, and the particle size of the fine powder is below 0.5mm. Generally, in the carbon industry, the fine powder is not conducive to the yield of the product during the roasting process, because the fine powder will block the normal discharge of the volatile content of the product during the volatilization stage of the product during the roasting process, so that the uneven volatilization of the product will cause the product to crack, so it is necessary Sieve to remove the fine powder with a particle size below 0.5mm. Such fine powder will be treated as waste, resulting in waste

[0003] On the other hand, the roof of the roaster in the carbon industry needs to use a filling layer for insulation. At this stage, coke is used to make the filling layer, which needs to be thicker, so it takes up a lot of space in the roaster and the energy utilization rate is low.

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