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Multiple Effect Distillation with Thermal Vapour Compression (MED-TVC)

The technology

The GOR of the evaporator in MED can be enhanced by addition of a thermocompressor between one of the cells and the hot one. Using LP or MP steam this static compressor will take part of the vapour raised in one of the cells and recycle it into higher pressure vapour to be used as heating media for the first effect.

The sketch shows the typical arrangement of an MED evaporator with thermocompression (MED-TVC). Whereas the GOR of the evaporator in MED would be in the range of 3 (using LLP steam) the GOR of sketch would rather reach 6 to 10 (using LP or MP steam).

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