work principle
The temperature of the material liquid in the heat exchange tube of the heater is increased by the steam outside the heat exchange tube. Under the action of the circulating pump, the material rises to the evaporation separator. Due to the drop in the static pressure of the material, the material evaporates, and the secondary steam generated by the evaporation overflows from the material liquid. The material is concentrated to produce supersaturation, which causes crystal growth to release the supersaturated material. It enters the forced circulation pump and enters the heat exchanger under the action of the circulation pump. The material is continuously evaporated and crystallized in this way, so as to realize the separation between substances and achieve the purpose of purifying chemical substances and obtaining chemical products.
Scope of application
This device is mainly suitable for the evaporation and crystallization of crystal precipitation solutions, and is widely used in the chemical industry, metal mining smelting, pickling waste liquid in large steel plants, wet desulfurization waste liquid treatment in power plants, etc. (sodium chloride, styrene-acrylic acid) Ferric acid, sodium sulfate, ammonium chloride, glycine; barium chloride, zinc sulfate, calcium chloride, ammonium sulfate, sodium hydroxide) In view of the characteristics and complexity of various solutions in various factories, our company provides crystals to users The composition and content of the precipitated solution will make a specific technical plan for the user's reference and choice!
Equipment composition
This equipment consists of heaters, forced circulation pumps, evaporative separators, finalizers, condensers, various material pumps, condensate pumps, vacuum pumps, operating platforms, electrical instrument control cabinets, and internal pipeline valves, etc.
main feature
1. According to the characteristics of the material and the size of the evaporation capacity, it can be designed as a single-effect or multi-effect evaporation unit.
2. The uniquely designed crystallizer can meet the 0 process requirements of continuous feeding and continuous discharging. The forced circulation of the evaporator forms a good match, and its internal structure enables the crystal and the clear liquid to be effectively and quickly separated.
3. The whole process is evaporation under vacuum conditions, the temperature is relatively low, and the evaporation speed is fast. Evaporation has low energy consumption and high evaporation concentration, which makes the material liquid with higher viscosity easy to flow and evaporate, and it is not easy to scale. It is one of the more advanced evaporation equipment that combines evaporation and crystallization.
