Furnace slag heat exchange device and high-temperature afterheat recycling device containing furnace slag heat exchange device

Abstract

The application belongs to the field of energy conservation, and particularly relates to a furnace slag heat exchange device and a high-temperature afterheat recycling device containing the furnace slag heat exchange device. The furnace slag heat exchange device comprises a furnace slag heat exchange mechanism which is used for conveying and distributing furnace slag; the furnace slag heat exchange mechanism comprises a first-stage heat exchange material bed which is arranged in an inclined manner and comprises a high feeding end and a low discharging end; and ventilating holes which can introduce cooling air flow to blow furnace slag to float and move to the discharging end are formed in the bottom of the first-stage heat exchange material bed. According to the furnace slag heat exchangedevice provided by the application, the cooling air flow can blow the furnace slag to float and move to a material bed of the next stage through the ventilating holes in the bottom of the material bed; conveying, heat transferring and heat exchanging of furnace slag particles are realized through collecting, distributing, performing heat exchange and recollecting repeatedly and distributing of thefurnace slag particles; meanwhile, low-pressure cooling air can be subjected to heat exchange stage by stage uniformly to achieve a purpose of recycling afterheat of the furnace slag; and the furnaceslag afterheat utilization efficiency is high.

Description

【Technical field】 [0001] The application belongs to the field of energy saving, and in particular relates to a smelting slag heat exchange device and a high-temperature waste heat recovery device including the device. 【Background technique】 [0002] At present, in the industrial field, smelting furnace equipment produces a large amount of slag during the production process. These slags are often accompanied by a large amount of waste heat. According to technical data, this part of waste heat resources accounts for more than 30% of its fuel consumption. It can be seen that the utilization of slag waste heat exists. Great potential. The utilization of waste heat from slag can not only reduce energy consumption per unit of product, but also reduce environmental pollution. Therefore, the utilization of waste heat from slag has considerable economic and social benefits. However, the existing devices used to recycle waste heat from slag have very low utilization efficiency, espec...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low efficiency of slag waste heat and serious heat loss in the slag granulation device in the prior art, the present application provides a slag heat exchange device and a high-temperature waste heat recovery device including the device. The utilization efficiency of slag waste heat is high, especially Suitable for waste heat recovery of low calorific value industrial slag

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