A new energy-saving and environment-friendly trolley furnace

Abstract

The invention relates to a novel energy-saving environment-friendly trolley furnace. Aworkflow is as follows: 1) putting a special superfine structural isostatic pressing isotropic graphite green ware into a steel barrel, putting the steel barrel onto a trolley and putting the trolley into a roasting furnace; 2) feeding fuel gas and hot air into a combustor, introducing the fully combusted hot air into the furnace through a pipeline and uniformly stirring the hot air in the furnace by a stirring fan; 3) returning the hot air in the furnace and the volatile components discharged from the product to the combustor through a draught fan, recycling the hot air, fully combusting the volatile components discharged from the product in the combustor and reusing the generated heat; 4) when the hot air pressure in a kiln exceeds the standard, exchanging heat through a waste heat air pipeline and then discharging clean air, and preheating air entering into the combustor by a heat exchanger; and 5) taking out the trolley and completing the electrode manufacturing. According to the invention, the temperature in the furnace is uniform; the maximum temperature difference does not exceed 12 DEG C; the accurate temperature control can be realized; the instant temperaturedifference does not exceed 0.5 DEG C; andthe roasting of the special superfine structural isostatic pressing isotropic graphite can be realized.

Description

technical field [0001] The invention relates to the technical field of special equipment for roasting new carbon and graphite materials, and is a brand-new energy-saving and environment-friendly kiln, which can meet the roasting of special ultra-fine graphite. Background technique [0002] With the rapid development of nuclear power, photovoltaics, optical fiber manufacturing, semiconductor manufacturing, rocket and missile launch, EDM and other fields, the demand for special graphite continues to increase, and its performance requirements are also getting higher and higher, especially for high-end ultra-fine graphite. All the structural isotropic graphite depends on imports. The reason is that there is no breakthrough in equipment technology and process technology, and it is blocked by foreign carbon giants. One of the bottlenecks is that the roasting pass rate of domestic ultra-fine structure isotropic graphite is low to below. To 50%, the cost is very high, because the ri...

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Problems solved by technology

[0002] With the rapid development of nuclear power, photovoltaics, optical fiber manufacturing, semiconductor manufacturing, rocket and missile launch, EDM and other fields, the demand for special graphite continues to increase, and its performance requirements are also getting higher and higher, especially for high-end ultra-fine graphite. All the structural isotropic graphite depends on imports. The reason is that there is no breakthrough in equipment technology and process technology, and it is blocked by foreign carbon giants. One of the bottlenecks is that the roasting pass rate of domestic ultra-fine structure isotropic graphite is low to below. To 50%, the cost is very high, because the ring furnace with cover is generally used for roasting, and the temperature difference between the front and back of the furnace is large, reaching 200 ° C, so the scrap rate is high

There are also huge sums of money introduced into the car-bottom roasting furnace, and the rate of roasting products has been greatly improved, but the volatile matter discharged from the product and the hot flue gas generated by fuel combustion are exported from the kiln into the incinerator to be incinerated with fuel and then emptied. The furnace type roasts special graphite, the natural gas consumption reaches 900 cubic meters per ton, the energy consumption is high, and the cost is high. Therefore, it is of great significance to design and invent a roasting furnace that is energy-saving and environmentally friendly to meet the special ultra-fine structure isostatic pressure isotropic graphite major

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