Single Pass Drum Dryer

Contact us

Single Pass Drum Drying Technology

Promill has a proven experience for 60 years in conception and manufacture of single pass dryers for DDGS, corn gluten feed and heavy density products.
Single pass design is also proven in wood industry for Oriented Strand Boards (OSB).
The single pass drum dryer offers following benefits which results in leading technology in the world.


  • High thermal efficiency
  • Scaling with 1 drum from 1T to 40T/H evaporation of water
  • Very low maintenance cost
  • Compliance with various dust and emission regulations
  • Compact layout
  • Easy transport to site
  • Easy assembly and construction on site

Fields of application

The Turbo Indirect Dryer

The Promill TURBO indirect drying concept aims at combining the best heat recovery and destruction of VOC (smell). This is achieved by an integrated recovery of energy to recover more than 80 % of latent heat, resulting in, for example, net thermal requirement of minimum 130  kcal/kg evaporated water and wet bulb temperature of 98°C.

Main features

  • The turbo drying unit is fitted with well proven equipment:
  • The traditional single pass drum
  • The specifically designed heat exchanger (no product clogging inside tubes)
  • Drying in an almost closed loop with offgases vapour at up to 98°C wet bulb
  • Maximum energy recovery
  • Non-condensable vapour is incinerated inside a patented burner resulting in VOC destruction
  • Can be combined with a belt drying plant for increasing evaporative capacity
  • Easy regulation
  • Full security against fire/explosion

Fields of application

  • DDGS
  • Secondary applications in food processing industry with concern of vapour at over 98°C wet bulb and environmental compliance