System product technology-multi-effect evaporation system

In multi-effect evaporation, heating steam is added to the first effect. The secondary steam generated from the first effect is used as the heating steam for the second effect. The heating chamber of the second effect is equivalent to the condenser of the first effect. The secondary steam generated from the second effect is used as the heating steam for the second effect. The secondary steam is used as the third effect heating steam. Multiple evaporators are connected in series to form multi-effect evaporation. Since the operating pressure of the evaporation chamber is reduced effect by effect in multi-effect operation, the final effect belt of the multi-effect evaporator in production is connected to the vacuum device. The heating steam temperature of each effect and the boiling point of the solution also decrease successively, while the concentration of the finished solution increases step by step. The secondary steam of the last effect enters the condenser, is cooled with water, condenses into water and is removed.
Multi-effect evaporation crystallization technology is mainly used in the metallurgical and chemical industries (concentration and crystallization of sulfates such as copper sulfate, zinc sulfate, cobalt sulfate, nickel sulfate, ammonium sulfate, sodium sulfate; cobalt chloride, zinc chloride, sodium chloride, etc. Concentration and crystallization of chloride; concentration and crystallization of alkali solution, etc.).

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