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Mechanical Vapor Recompression - MVR


Evaporation processes through electrical energy


Cost-effective and reliable process in evaporation, distillation and crystallisation.

Mechanical Vapor Recompressor
Mechanical Vapor Recompressor
Mechanischer Brüdenverdichter

In the mechanical vapor recompression, the vapors are compressed by an electrically operated compressor and used again to heat the evaporator. Depending on the application (boiling point increase, heat transfer,...), one- or multiple-stage turbo-compressors are working based on an open heat pump principle.

Here, the process steam (vapor) arising in the industrial processes is lifted to a higher temperature and thus higher energy level with a centrifugal fan and then returned to the process as heating steam. The energy contained in the steam is not lost, only the energy required to increase the temperature must be additionally applied.

Since the dramatic increase in energy costs in recent decades, efforts have been made to reduce the consumption of fossil fuels and CO2 emissions, as well as to reduce the high levels of steam consumption for these processes to date. With mechanical vapor recompression, these efforts can be achieved because it is a cost effective and reliable process for evaporation, distillation, crystallization and drying.


Mechanical Vapor Recompression - MVR



  • Pre-evaporation of black liquor
  • Milk / whey
  • Starch
  • Sugar
  • Alcohols
  • Pectins
  • Citric and acetic acid
  • Oil recycling
  • Boiler feed water
  • Meat and fish utilization

  • Little life-steam demand
  • Little cooling water demand
  • Gentle evaporation temperature
  • Reuse of low-pressure steam possible
  • Reduced plant footprint
  • Reduction of the CO2 footprint by using compressor power from renewable electricity

Facility Planning
We design each evaporation plant according to the specific needs and requirements. The process conditions are of crucial importance for the correct dimensioning.


Minimal investment costs with maximum energy efficiency are the result.

◆ Dimensions: 300 – 10.000 sqm
◆ Feed Rates: 5.000 kg/h – 150.000 kg/h
◆ Operating Pressure: ≥ 80 mbar abs.
◆ Heating Temperature: ≤ 200°C
◆ Operating Pressure: -1 / +5 bar(g)
◆ Viscosity: ≤ 250 mPas