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These systems can be either single or multiple effects and the vapor re-compression concept (either thermal or mechanical) is often applied. Usually, they operate from low vacuum to atmosphere pressure.
As a rule, these units are used for high evaporation rates and when crystal size is not of the utmost importance or if crystal grows at a fair rate.
Almost any material of construction can be considered for the fabrication of these evaporator.

MVR is the abbreviation for Mechanical Vapor Compression. Nickname: Mechanical steam recompression evaporator is a type of evaporator that utilizes the secondary steam generated in the evaporator. After being compressed by the compressor, the pressure and temperature increase, and the enthalpy increases. It is then sent to the heating chamber of the evaporator for circulation as heating steam. MVR is a technology that reuses the heat generated by its own secondary steam to reduce the demand for external energy.Type of MVR evaporator:MVR falling film evaporator, MVR rising film evaporator, MVR forced circulation evaporator, etc. When the thin secondary steam is compressed by volume, its temperature will increase accordingly, achieving the transformation of low-temperature and low-pressure steam into high-temperature and high-pressure steam, which can serve as a heat source to reheat the raw liquid that needs to be evaporated, thus achieving the goal of recycling and utilizing steam; Due to the fact that the compression of this volume is achieved through a compressor, it is called MVR. Currently, MVR evaporators are increasingly being used in areas with higher steam prices and lower electricity prices. The larger the evaporation capacity, the more advantageous it is for MVR.