The plate heat exchanger is a high-efficiency heat exchanger made up of a series of metal sheets with a certain corrugated shape. The iron and steel manufacturing process generates a large amount of idle heat such as hot air, exhaust gas, and hot water vapor. This heat will be absorbed by media such as buildings, equipment, cooling oil, cooling water and other media, but they all require cooling. Generally, steel mills will choose open cooling towers to use air and water to exchange heat to cool the equipment. In summer, the effect of the cooling tower is not obvious, the equipment cannot be lowered, and the water temperature is gradually rising. The application of plate heat exchanger in steel technology.
At present, 95% of my country's iron and steel plants account for about 50% of the heat output below 300°C, of which cooling water below 100°C accounts for the largest proportion of the total heat output. A large amount of water and energy waste has caused the cost of steel plants to increase, and environmental protection problems have become worse and worse.We can solve all problems by adding one or more plate heat exchangers to the cooling water system. The principle is the same as that applied in thermal power plants, which is mainly divided into closed-circulation water plate cooler and plate oil cooler. The heat exchanger mainly cools the mold, the furnace water, the emulsion, the continuous casting machine, the hydraulic oil, the ammonia solution, and the coking plant water. Excess waste heat steam can also be recovered as waste heat and used as a domestic hot water system, which is also an energy recycling advantage.