GEA meVap® Crystallization

GEA’s meVap® crystallization system is an industrial heat pump solution based on proven mechanical vapor recompression (MVR) technology and reduces both energy costs and the carbon footprint.

GEA’s meVap® crystallization is a core technology in GEA’s energy efficient crystallization solutions. By mechanically recompressing and reusing the vapor generated in the process, MVR systems achieve outstanding thermal efficiency and ensure stable, high quality crystal formation. The result: lower operating costs, reduced environmental impact, and consistently reliable performance.

GEA’s meVap® crystallization system can be seamlessly integrated into new or existing plants, regardless of scale. 

How does GEA help drive decarbonization?

GEA meVap® Crystallization integrates seamlessly into diverse industrial environments and supports industrial customers in:

• Reducing energy consumption and lowering dependency on fossil fuels
• Reusing process heat for internal steam demands
• Significantly increasing plant efficiency through intelligent heat integration

By electrifying steam generation and recovering process heat, GEA meVap® Crystallization becomes a central enabler on the path toward net zero operations.

How does the meVap® Crystallization work?

Mechanical vapor recompression (MVR) is the core of GEA’s high efficiency meVap® crystallization systems. By reusing the vapor generated within the process as the primary heat source, MVR enables a highly efficient, self sustaining energy loop that lowers operating costs and ensures consistently high product quality.

The feed solution enters the crystallizer, where a portion of the solvent is gently evaporated to create supersaturation – the key driver for crystal growth. The vapor released from the slurry is separated and n forms the basis for the next process step. It is routed to a mechanical compressor, where a slight increase in pressure and temperature transforms it into a powerful heating medium. Because only a small temperature lift is required, the process achieves outstanding energy efficiency.

The recompressed vapor condenses on the crystallizer’s heat exchange surfaces, releasing its latent heat back into the circulating solution. This heat evaporates additional solvent and effectively closes the thermal loop.

As supersaturation builds, crystals begin to form and grow under precisely controlled temperature, residence time, and circulation conditions. This controlled environment ensures a stable, reproducible crystal size distribution that meets even demanding product specifications.

Once formed, the crystals are separated and the mother liquor can be recirculated for further concentration or discharged as a controlled purge.

Powered primarily by electricity, MVR supports the electrification of thermal processes and facilitates the integration of renewable energy sources—an important step toward low carbon and future ready production.