Equipment and method for preparing anhydrous sodium sulfate
A technology of anhydrous sodium sulfate and sodium sulfate, applied in the direction of alkali metal sulfite/sulfate dehydration, etc., can solve the problems of complex industry, large investment in equipment at one time, high energy consumption of sodium sulfate evaporation and crystallization, and achieve low energy consumption, Good product quality
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[0032] Such as figure 1 Shown, a preferred embodiment of the present invention provides a kind of equipment for preparing anhydrous sodium sulfate, comprises the closed-circuit circulation membrane concentrating system, salting-out system 17, delivery pump 18 and normal temperature crystallization system connected successively; Wherein, closed-circuit circulation The membrane concentration system is used to concentrate the incoming liquid containing sodium sulfate and discharge the concentrated solution containing supersaturated sodium sulfate, and the salting-out system 17 is used to convert the sodium chloride-sodium sulfate-water ternary system in the concentrated solution into an unsaturated solution. In a stable system, the delivery pump 18 is used to transport the concentrated solution discharged from the salting-out system to the normal temperature crystallization system, and the normal temperature crystallization system is used to carry out normal temperature crystalliz...
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