Evaporators with mechanical recompression

Mechanical compression is a particularly efficient technique for recovering thermal energy in all processes involving the concentration and distillation of liquid solutions.
It involves increasing the enthalpy of the vapors generated by the evaporating product through compression induced by a compressor; these vapors are then used as a heating medium in the evaporation process itself.
With a relatively modest input of electrical energy (30 to 50 kWh per ton of evaporated water), a significant increase in hourly distillate productivity is achieved.