Introduction of plate evaporator

18-06-2021

With the increasing application of plate evaporators in sugar, chemical, liquid food, pharmaceutical and other industries, let's take a look at plate evaporators.

Evaporation is a thermal separation technology, and the evaporation device is mainly used to concentrate or separate liquid solutions. A plate evaporator is an evaporating device that uses metal heat exchanger plates instead of round tubes as heat transfer elements. In terms of energy saving, the plate evaporator can carry out countercurrent heat transfer and evaporation, which greatly shortens the temperature difference between the two ends, thereby reducing the amount of heating steam. It has the characteristics of high heat transfer efficiency, low capital investment, less scaling, removable and washable, easy to expand, convenient maintenance, and less material retention. It is widely used in food, fruit juice, dairy, medicine, sugar, biological products, fermentation, Evaporation and concentration systems such as single-effect evaporation, multi-effect evaporation, MVR, etc. for environmental protection, papermaking, sewage treatment, seawater desalination, machinery, metallurgy, petrochemical and shipbuilding industries.

The plate evaporation system is composed of plate evaporator, plate condenser, plate heat exchanger, separator, demister, pump, valve, pipeline, etc. After understanding the evaporation characteristics of the material, the evaporation area and steam consumption are calculated by calculation It has been repeatedly deduced and optimized to design an integrated solution with reasonable evaporation efficiency and stable operation for material evaporation and concentration, steam waste heat utilization, and condensate waste heat utilization.

The working principle of the plate evaporator: the temperature of the material to be evaporated rises above the bubble point under the corresponding pressure through the partition wall heat exchange, resulting in continuous boiling, and is separated into high-concentration liquid and pure saturated water vapor in the gas-liquid separator In order to achieve the purpose of concentration.


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