Mechanical vapor recompression

Mechanical vapor recompression (MVR) is a process used in evaporation treatment that utilizes a compressor or fan to recompress vapor instead of steam, which is then returned to the same stage. This technology is highly efficient and energy-saving, making it the most commonly used process in the evaporation treatment of landfill leachate or its concentrate. MVR has several advantages, including a small covered area, a simple process, and adaptability to changes in water quality and quantity.From: Handbook of Food Engineering [2018], Treatment of landfill leachate evaporation concentrate by a modified electro-Fenton method [2022]

Evaporation and Freeze Concentration

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Published in Dennis R. Heldman, Daryl B. Lund, Cristina M. Sabliov, Handbook of Food Engineering, 2018

Ken R. Morison, Richard W. Hartel

A mechanical vapor recompression (MVR) evaporator uses a compressor or fan, rather than steam, to recompress the vapor before returning it to the same stage. Once started, the energy input is the electricity used to drive the compressor or fan, so a reliable source of electricity is normally required. This could be supplied by a cogeneration system that produces steam and electricity. Alternatively, the compressor can be driven by a gas turbine or engine. The MVR evaporator does not require much steam and does not require a condenser, but a vacuum pump is required to establish and maintain the vacuum by removing non-condensable gases.

Fluidized bed dryers in terms of minimizing environmental impact and achieving the sustainable development goals

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Published in Drying Technology, 2022

Iryna Ablieieva, Nadiia Artyukhova, Jan Krmela, Myroslav Malovanyy, Dmytrii Berezhnyi

It is essential to emphasize that in the case of the same temperature and exergy rate of the dried material and the fluidizing/drying medium in mechanical vapor recompression – fluidized bed dryers (MVR–FBD) system, this process is going without energy recovery. Simultaneously, the self-heating recuperative fluidized bed dryers (SHR–FBD) system provides heat recovery, including the sensible heat of the dried material and the condensate.[7]

Mechanical vapor recompression

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Evaporation and Freeze Concentration

Fluidized bed dryers in terms of minimizing environmental impact and achieving the sustainable development goals