Fuel gas type aluminum enamel heating curing oven capable of recycling residual heat in flue

Abstract

The invention relates to a fuel gas type aluminum enamel heating curing oven capable of recycling residual heat in a flue. The fuel gas type aluminum enamel heating curing oven capable of recycling the residual heat in the flue comprises a furnace body 4 and a transport device 1, wherein a low temperature zone 12 and a high temperature zone 11 are arranged in the furnace body 4, two heat exchange chambers 9 are respectively arranged on portions of the furnace body 4, where the low temperature zone 12 and the high temperature zone 11 are arranged on, and a circulating fan 6, a combustor 7 and a fuel gas type combustion engine 8 are arranged in each heat exchange chamber 9. A smoke discharge pipeline 2 of a combustor of the low temperature zone 12 can directly discharge smoke out of the furnace body 4, and a long waste heat recovery pipeline 3 is connected between a smoke discharge pipeline 1 of a combustor of the high temperature zone 11 and the combustor 7, and furthermore the waste heat recovery pipeline 3 sequentially passes through the high temperature zone 11 and the low temperature zone 12 in the furnace body 4, then is connected to the smoke discharge pipeline 1 and finally extends out from the furnace body 4. The fuel gas type aluminum enamel heating curing oven capable of recycling the residual heat in the flue has the advantages of recycling heat energy of flue gas discharged from the combustor of the high temperature zone through the waste heat recovery pipeline, conveying the heat energy of the flue gas to the low temperature zone, adding heat energy of the low temperature zone, and fully recycling waste heat of the flue gas so as to achieve a purpose of energy conservation and emission reduction.

Description

technical field [0001] The invention relates to a heating and curing furnace for industrial heat treatment, in particular to a gas-fired aluminum enamel heating and curing furnace which can recover waste heat from a flue. Background technique [0002] The invention is mainly used in a heating and curing furnace for high-temperature curing of aluminum enamel workpieces. Due to the special heating process of aluminum enamel workpieces, the requirements for furnace temperature control, heating mode and curing time are particularly high. [0003] At present, the heating and curing furnaces used for high-temperature heat treatment of aluminum enamel workpieces generally use indirect gas heating. Above the furnace body, a gas combustion chamber is set, and the heat generated by combustion is sent into the furnace by a circulation fan. The heated aluminum enamel workpiece is placed on the conveying device, and the conveying device transports the workpiece through the furnace to co...

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Problems solved by technology

[0004] The deficiency of above-mentioned prior art is: the waste gas that each combustor combustion produces has very high heat, especially the waste gas of high temperature zone, and waste heat temperature is as high as 500 degrees, if directly discharged, energy loss is very big, and, also to production workshop would pose a serious safety hazard

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