Evaporative cooling system with function of controlling high-loop enhanced steam-water separation and method thereof

Abstract

The invention relates to the technical field of ferrous metallurgy, in particular to an evaporative cooling system with a function of controlling high-loop enhanced steam-water separation and a method therfeof. The system comprises a steam pocket body, and a water replenishing system and a steam outlet pipeline which are connected with the steam pocket body, and further comprises a forced circulation system and a natural circulation system; the forced circulation system comprises a forced circulation pump and a first heat exchanger which are sequentially connected through a pipeline, wherein the input end and the output end of the forced circulation system are connected with the steam pocket body to form a forced circulation loop, and water in the steam pocket body enters the steam pocket body from a high position after passing through the forced circulation system; the natural circulation system comprises a second heat exchanger, and the second heat exchanger and the steam pocket body are connected through a pipeline to form a loop. Convenience is provided for earlier-stage testing and later-stage user maintenance, the water discharge amount is reduced, meanwhile, the steam-water separation effect of return water in the evaporative cooling system is enhanced, the overall steam-water separation effect is improved, flow dynamic adjustment is achieved through control, and the overall performance is improved.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to an evaporative cooling system and a method thereof with a controlled high-loop enhanced steam-water separation. Background technique [0002] The energy consumption of iron and steel enterprises accounts for nearly 10% in my country. At the same time, there is still a lot of gap between iron and steel enterprises and developed countries in the utilization rate of waste heat at this stage. One of the important ways to make iron and steel production efficient and green; at present, there are two main cooling methods for waste heat boilers, one is open circuit or direct cooling with circulating water, and the other is vaporization cooling. Compared with direct water cooling, the vaporization cooling system produces Steam can be incorporated into the steam pipe network in the factory area for power generation, power, heating, etc., with higher energy utilization. [...

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Problems solved by technology

[0004] During the use of the existing waste heat boiler evaporative cooling system, it was found that since the return water section of the steam drum of the existing waste heat boiler evaporative cooling system is basically located in the middle and below, a large amount of water will be released during shutdown maintenance and testing , resulting in great waste. At the same time, during the working process of the waste heat boiler vaporization cooling system, since the high water level section will be basically close to or not past the return water pipeline, there is no enhanced effect on the separation of steam and water.

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