MVR technology
Mechanical Vapor Recompression (MVR) increases the energy efficiency of evaporation processes by using electricity as the primary energy source. Generated vapor is compressed and reused as heating steam, reducing the need for live steam and cooling water. The result is lower operating costs, reduced CO₂ emissions, and gentle evaporation conditions for sensitive products.
Mechanical Vapor Recompression (MVR)
How it works
Process steam (vapor) is compressed by an electrically driven compressor, its temperature and thus energy level is raised, and finally reused to heat the evaporator.
Depending on the application (boiling point increase, heat transfer) single-stage or multi-stage turbo compressors work on the principle of an open heat pump.
Applications
- Pre-evaporation of black liquor
- Sulfite liquor
- Solvent recoveries
- Lactic acid
- Starch
- Alcohols
- Chemicals
- Wastewater
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Advantages
- Reduced demand of live steam and cooling water
- Significantly reduced operating costs in many cases
- CO2 savings through electrical energy as the main energy source
- Gentle evaporation temperature
- Reuse of low-pressure steam possible
Use case Sappi Saiccor, South Africa
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