The pressure difference between the boiling film and the condensing surface is the driving force for the vapour flow. Operating below 1 mbar requires extremely short distance between the boiling surface and the condensing surface to minimise the pressure drop caused by the vapour flow. For this reason one also talks of Short Path Distillation, High Vacuum Evaporation or Molecular Distillation. The short path evaporator has an internal condenser opposite the heated surface enabling operations down to 0.001 mbar.
Our short path evaporators are characterised by its sturdy construction and the special rotors. The rotors will process products with demanding properties with regard to high viscosity, high boiling temperature and suspended solids.
Operating window:
Process conditions |
Operating window |
Feed rate kg/h | 100 - 10.000 |
Boil-off rate % | up to 95 |
Heating temperature °C | 20 - 500 |
Pressure process side mbar abs. | 0,001 - 1013 |
Viscosity at process temp. cP | up to 50.000 |
Residence time min | < 1 |
Dry or suspended matter | yes |