Agitated Thin Film Evaporators For Molecular Evaporation And Distillation

Agitated Thin Film Evaporators For Molecular Evaporation And Distillation

Thin Film Evaporators Introduction

Thin film evaporator is highly effective device for evaporation and distillation ,which uesrs scraper system to force the liquid film forming.It features high heat transfer efficiency ,fast evaporation speed and short master residence time.

Thin Film Evaporators Feature

1. Economical and practical.

2. For viscous material, the feeding tank is designed as a double layer insulation tank, all tube parts are double-layer insulation type, ensure there will be no solidification which will affect material's separation.

3. Double-layer insulation feeding tank, continuous feeding of magnetic gear pump, light phase and heavy phase sample magnetic circulation gear pump continuous collection scheme.

——Operation

Feed liquid is admitted into still under high vacuum, immediately spread into a very thin film and forced quickly down the evaporation surface. Heated walls and high vacuum drive the more volatile components (distillate) to the external condenser as the less volatile components (residue) continue down the cylinder. The resulting fractions, thus separated, exit through individual discharge outlets. Depending on application, the desired product is either the distillate or the residue fraction. Small amounts of condensable low MW compounds collect in cold trap upstream of vacuum system. For high solvent loads, an optional external condenser may be installed immediately downstream of the still.

——Particular features

Continuous distillation process.
Low operating pressures (100~10000Pa ,100Pa=1mbar).
Short residence time.
High evaporation rates.
Processing of high-boiling, high-viscosity or crystallizing products is possible.
Can be used as a reboiler for column.
Low fouling on evaporator wall.

Thin Film Evaporators Parameters