Vobis pilot scale vapor compression evaporators (VCE), also called mechanical vapor recompression evaporators (MVR), evaporate lowering the needed energy via an electrical heat pump or compressor principle. Water is evaporated, and then the vapor is recompressed mechanically by an efficient compressor, fan or blower combination, increasing its saturation temperature and releasing its latent heat. 

Our pilot vapor compression evaporation systems are manufactured with the option of a wide variety of process wetted materials of construction, dependent upon the client specific application requirements.  Appropriate materials can include various stainless steel alloys, Duplex steels, and titanium.  Allen Bradley or Siemens PLC control systems are typically implemented to accurately and reproducibly control our mechanical vapor recompression evaporation systems.  Skid mounting allows easy installation as well as ready access to all piping, pumps, control elements, and process vessels as well as moving the system to new locations as necessary.

Vobis pilot scale vapor compression evaporators or MVR pilot evaporators are very energy efficient and are thus more operationally cost-effective than multiple-effect evaporators because of the very high efficiency of the electrical compressor, blower and/or fan that provides the motive energy for the evaporation.  Only electrical energy is needed; neither steam nor cooling water is required.  Unlike thermal vapor compression evaporators, mechanical compressors eliminate the need for any steam once the system is operational.  Our VCE (MVR) pilot systems have the added advantage of requiring only a small product inventory that minimizes product heat history.

The implementation of Vobis pilot scale vapor compression evaporation systems:  enables low temperature operation under vacuum operating conditions which is important for heat sensitive products; have very low energy consumption; and can eliminate cooling water as a requirement for operation.