Method for recycling waste heat of high-temperature materials and device

Abstract

The invention relates to a method for recycling waste heat of high-temperature materials and a device, and belongs to the technical field of energy conservation and environmental protection. According to the method, the high-temperature materials are evenly distributed in a combustion chamber under the action of a material distributing device after entering the combustion chamber, low-temperature gas exchanges heat with the high-temperature materials flowing downwards in the upward flowing process, the cooled materials are discharged out of a furnace, and the high-temperature gas is discharged into a gas recycling module for recycling waste heat. The invention further provides a device used for the method, the device at least comprises a recuperative furnace and the gas recycling module, the recuperative furnace at least comprises a recuperative furnace shell, the material distributing device, a feeding mechanism and a discharging mechanism, and the gas recycling module at least comprises a high-temperature gas exhausting device, a system pipeline, a waste heat boiler, a circulating gas dust removal device and an air blower. According to the method and the device, the waste heat of the high-temperature materials can be fully recycled, and the high-quality materials which are uniform in particle cooling, non-sticky and non-broken can be obtained.

Description

technical field [0001] The invention relates to a waste heat recycling method and device for high-temperature materials, and belongs to the technical field of energy saving and environmental protection. Background technique [0002] The iron and steel industry is an important basic industry of the national economy. In the iron and steel industry, the total amount of waste heat resources of high-temperature materials, such as pellets, sinter, and metallurgical slag, is large. The efficient recovery and utilization of waste heat is the key to energy saving and consumption reduction in subsequent processes. important way. At present, the cooling process of high-temperature materials such as sinter and pellets is mainly air cooling, and the air cooling devices used mainly include cooling boxes with sliding chutes, belt air coolers, ring air coolers or vertical air coolers. Cold device, in actual production, in the process of heat exchange between high-temperature materials and ...

AI Technical Summary

Problems solved by technology

At present, the cooling process of high-temperature materials such as sinter and pellets is mainly air cooling, and the air cooling devices used mainly include cooling boxes with sliding chutes, belt air coolers, ring air coolers or vertical air coolers. Cold device, in actual production, in the process of heat exchange between high-temperature materials and medium, there are generally problems of uneven distribution of high-temperature materials, uneven cooling, and insufficient waste heat recovery of materials. When high-temperature materials are not cooled uniformly, sometimes high temperature The bonding and fragmentation of the material will reduce the quality of the material

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