Wiped Film Evaporators (WFE) are extensively used for evaporation applications in distilling, concentrating, stripping, reaction of products that involve high viscosity, high boiling points and heat sensitivity.
| Advantages | Technical Add-ons (for best function) |
|---|---|
| Continuous processing for heat sensitive, fouling and viscous products | Advanced Automation with PLC/SCADA (optional) |
| High heat transfer coefficients | Heating circulator/chillers can be included |
| Short residence time | Vacuum pump can be included |
| Low hold up with minimum losses | |
| Easy operation with low maintenance |
Working Principle:
Operational process of WFE involves thermal separation of mixture by formation of a thin film on the shell surface.
How ?A rotating distribution plate with special designed wipers help in forming of the film on shell for the feed from the feed vessel. The rotor is responsible for stabilising the liquid film on the heating surface. The thin film formed helps in efficient heat transfer for viscous heat sensitive fluids.
The vapours travel through vapour line to a condenser and hence are condensed. Provision of a condenser makes it a molecular distillating unit.
Higher boiling components or products are collected in the receiver through product outlet.
| Models for Short path Dillation | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | Inside Diameter (mm) |
Evaporation Area (m2) | Receiver Flask Volume | Feeding Rate (L/h) | MotorPower | RPM/min | Chiller | Heating Circulator |
| JE-WFE2 | 50 | 0.05 | 2L | 0.5 to 3 | 120W | UPTO 400 | FL-800 (Power – 800 W) |
UC-1820 (Power – 2 kW) |
| JE-WFE3 | 80 | 0.1 | 2L | 1 to 5 | 120W | UPTO 400 | FL-800 (Power – 800 W) |
UC-1820 (Power – 2 kW) |
| JE-WFE4 | 100 | 0.15 | 5L | 2 to 8 | 120W | UP TO 400 | FL-800 (Power – 800 W) |
UC-1820 (Power – 2 kW) |
| JE-WFE6 | 150 | 0.25 | 20L | 3 to 15 | 120W | UP TO 400 | FL-0250 (Power – 2.5 kW) |
UC-3020 (Power- 3 kW) |
| JE-WFE8 | 200 | 0.3 | 30L | 5 to 20 | 120W | UP TO 400 | FL-0250 (Power – 2.5 kW) |
UC-3020 (Power- 3 kW) |
Application :
- Distillation of heat sensitive materials and viscous materials
- Evaporation of organic compounds ( Solvent recovery )
- Concentrating solids in solution ( food industry )
- Purification of drugs
