General Equipment Considerations

Major Components

• 1 Feed
• 2 Product distribution plate
• 3 Heating fluid
• 4 Vacuum nozzle
• 5 Distillate
• 6 Cooling
• 7 Residue
• 8 Heating jacket
• 9 Roller wiper system
• 10 Internal condenser

Horizontal Section Through A Short Path Distiller

Tasks of the Wiper System

• Uniform distribution of the product onto the evaporator surface
• Permanent mixing of the product film
• Improvement of heat transfer from the heated wall into the product film
• Exclusion of “Hot Spots“
• Reduction of residence time

Characteristics of the UIC’s Roller Wiper System on all KDL and KDT Models

• Open wiper basket design
  minimizes pressure drop between evaporation and condensation
• Good mixing of the product film
  improves the evaporation of volatiles
• Overlapping of wiper rollers
  avoids unwiped spots and formation of “Hot Spots“
• Self-cleaning wiper elements
  minimizes maintenance
• Short residence time
  reduces temperature history of product