The Processes of MVR Salt Refinery

MVR is mechanical vapor recompression, which is more energy and operating costs saving, small footprint, less public works, less total investment in the project, reliable operation and high degree of automation, and no need to add fresh steam during production.

In mechanical vapor recompression, the secondary steam evaporated from the evaporator is adiabatically compressed by a mechanically driven compressor, increasing its pressure and temperature.

Therefore, the compressor also functions as a heat pump to add energy to the steam. That is, during its working process, the low-grade steam is adiabatically compressed by the compressor, increasing its temperature, pressure, and enthalpy, and then enters the heating chamber of the evaporator to condense and release heat, fully utilizing the latent heat of the secondary steam.

Except for the initial startup, the entire evaporation process does not require fresh steam.

Note:

• The PFD is for reference only.
• Based on the basic data and varying requirements of different plants, the process needs to be professionally customized and appropriately adjusted.