This equipment is primarily designed for the evaporation and crystallization of wastewater containing precipitated crystals. It is widely utilized in the chemical industry, metal smelting operations, the treatment of pickling waste liquids from large-scale steel mills, and the processing of waste liquids generated by wet flue gas desulfurization (WFGD) systems in power plants.
The primary crystalline components that precipitate out include sodium chloride, phenylalanine, sodium sulfate, ammonium chloride, barium chloride, zinc sulfate, calcium chloride, ammonium sulfate, and sodium hydroxide.

▎Working Principle

The raw material is heated by steam flowing outside the heat exchange tubes within the heater, causing its temperature to rise. Driven by a forced-circulation pump, the material ascends into the separator; the secondary vapor generated through evaporation separates from the liquid phase, while the material becomes concentrated, forming a supersaturated crystal slurry that settles at the bottom of the separator. Subsequently, crystals precipitate out as the material passes through a cooling crystallizer, thereby achieving the separation of substances and fulfilling the objectives of purifying chemical compounds and obtaining chemical products.

▎Equipment Components

This equipment consists of a heater, forced-circulation pump, separator, crystallizer, condenser, condensate pump, vacuum pump, operating platform, control system, as well as associated piping and valves.

▎Key Features

1. Depending on the characteristics of the material and the required evaporation capacity, the equipment can be designed as a single-effect unit or a multi-effect combination system.
2. It employs a uniquely designed crystallizer capable of meeting process requirements for continuous feeding and continuous discharge; its internal structure facilitates the rapid and effective separation of crystals from the clear liquor.
3. The entire process operates under vacuum conditions, resulting in relatively low operating temperatures, rapid evaporation rates, low energy consumption, and high concentration efficiency. This design facilitates the flow and evaporation of high-viscosity feed liquids while minimizing scale formation.
4. Processing Capacity: 100 L/h – 10,000 L/h.