Extra-high temperature liquid metallurgical slag waste heat recovery device and waste heat recovery system

Abstract

The invention relates to an extra-high temperature liquid metallurgical slag waste heat recovery device which comprises a heat exchange box body. The heat exchange box body is provided with an inlet allowing extra-hot high-temperature liquid metallurgical slag to flow into the heat exchange box body; a first heat exchange tube group used for absorbing the heat of the extra-hot high-temperature liquid metallurgical slag is arranged in the heat exchange box body; a discharge opening is formed in the bottom surface of the heat exchange box body, and a quick opening door capable of controlling thedischarge opening to be opened or closed is formed in the discharge opening; the heat exchange box body is also provided with a jacking assembly used for decomposing and pushing semi-solid metallurgical slag formed after heat exchange of the extra-high temperature liquid metallurgical slag; and the jacking assembly comprises a plurality of power ejection rods and a first driving device for driving the power ejection rods to move towards the discharge opening. Meanwhile, the invention also relates to a waste heat recovery system comprising the extra-high temperature liquid metallurgical slag waste heat recovery device. Through multi-stage comprehensive utilization of the extra-high temperature liquid metallurgical slag, the full utilization of waste heat of the extra-high temperature liquid metallurgical slag is realized, the heat energy utilization efficiency is greatly improved, and the maximum energy conservation and emission reduction are realized.

Description

technical field [0001] The invention relates to the field of waste heat recovery and utilization of metallurgical slag, in particular to a waste heat recovery device and a waste heat recovery system for ultra-high temperature liquid metallurgical slag. Background technique [0002] In the metallurgical industry, the metallurgical slag produced during metallurgy is often treated. In order to improve the utilization of metallurgical slag, the waste heat of metallurgical slag is often recycled. [0003] Because the ultra-high temperature liquid metallurgical slag produced by metallurgy has problems such as high temperature and complex composition, if it is used directly for heat exchange, due to the large temperature change span, the impact frequency of the heat exchange system for heat exchange utilization is too high, and the equipment is easily damaged. Therefore, there is currently no equipment for direct heat exchange and utilization of ultra-high temperature metallurgical...

AI Technical Summary

Problems solved by technology

[0003] Because the ultra-high temperature liquid metallurgical slag produced by metallurgy has problems such as high temperature and complex composition, if it is used directly for heat exchange, due to the large temperature change span, the impact frequency of the heat exchange system for heat exchange utilization is too high, and the equipment is easily damaged

Therefore, there is no equipment for direct heat exchange and utilization of ultra-high temperature metallurgical slag.

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