Energy circulation system for converter gas flue evaporation cooling optimization

Abstract

The invention relates to an optimized energy circulating system for converter flue evaporation cooling, comprising a steam tank (1), and a water feeding circuit, forced circulation cooling water circuit, and a natural circulation cooling water circuit with surplus energy from high to low, wherein the water supply circuit comprises a water inlet pipe (25), a water feeding pump (26) and a high pressure water feeding pipe (27); the forced circulation cooling water circuit comprises a circulating pump (3), a fume hood cooler (6) and a lower flue cooler (9) arranged from the steam tank (1); the natural circulation cooling water circuit comprises a natural circulation down pipe (19), an upper flue cooler (22) and a natural circulation rising pipe (23) from the steam tank (1) to the steam tank (1); and energy transmission devices (12, 20) are connected in the circuit with relatively low surplus energy in series, and the outlet of the circuit with relatively high surplus energy is connected with the energy transmission devices in T-shaped manner. The inventive energy circulating system can take full use of the surplus energy in the feed water and the forced circulation cooling water, so as to enhance cooling effect and reduce energy consumption of the cooling system.

Description

technical field [0001] The invention relates to a converter flue vaporization cooling system, in particular to a converter flue vaporization cooling optimized energy circulation system which can make full use of the abundant energy of feed water and forced circulation cooling water. Background technique [0002] At present, there are three known vaporization cooling methods for steelmaking converter flue: one is natural circulation vaporization cooling, which is mostly used for small steelmaking converter flue; the other is forced circulation vaporization cooling, which is mostly used for large steelmaking converter flue The third is the mixed circulation cooling method adopted by both natural circulation and forced circulation. For the key protection of the fume hood and the lower flue in the high temperature area of ​​the converter mouth, forced circulation cooling is adopted, and natural circulation cooling is adopted for the flues of the upper sections of the converter. ...

AI Technical Summary

Problems solved by technology

At present, although these three cooling methods are widely used as mature technologies, from the perspective of energy allocation and use, the system flow structure of these three cooling methods has long-term defects in unreasonable energy consumption: the abundance of water supply pumps and circulation pumps The energy cannot be used to drive the cooling water cycle, and can only be brought into the steam drum by the cooling water for useless work, which wastes energy and affects economic benefits

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