During the production of alcohol (bioethanol, rectified alcohol, industrial alcohol) from cereals, protein-rich stillage is produced at the bottom of the distillation column. The interest of DDGS production is the transformation and the valorization of a by-product to high added value cattle feed.

Maguin technology includes four steps:
The separation: the centrifugal decanter separates thin stillage from the solids (cake).

The concentration: the thin stillage containing proteins is concentrated by an evaporation unit to produce a syrup.

The wash concentration units developed by Maguin Interis are designed to control the clogging specific to each raw material and are based on:

  • Multiple effect, co-current, countercurrent or cross flow evaporation
  • Each effect is composed of a multi-pass evaporator with forced circulation or of a Falling Film Evaporator according to the characteristics of the product.

The DDGS drying: The cake and the syrup are mixed and dried in a drier. The DDGS go out dried and powdered.
Direct and indirect drying technologies running with natural gas (or wood or other fuel combustion chamber), steam indirect driers are designed and manufactured by companies of Moret Industries Group.

DDGS pelletizing: Powdered DDGS are pelletized to increase the density and reduce the transport costs. They are commercialized in protein-rich livestock feed (Dried Distillers Grain& Solubles)


  • Control of the design, technology and manufacture of the equipment of the complete installation.
  • Low clogging of evaporators
  • Infrequent stops for cleaning
  • Total energy integration (liquefaction, distillation, evaporation, drying) with a very low energy consumption
  • Low temperature process enabling to keep the quantity of proteins and their quality.
  • Possible use of low pressure steam
  • Thermal expertise on request for integration in the existing units in order to reduce the energy consumptions as well as the wash quantity to be treated.


  • Processes adapted to the different raw materials (corn, rye, wheat, triticale, barley…)
  • Capacities already achieved from 24 t/d to 550 t/day of DDGS
  • Several possible dimensions of pellets (6 mm, 8 mm) to meet the different industries/markets (livestock or animal feed factory)
  • Low power consumption specific to the pellet press offering a low OPEX
  • Several technologies including gas heated and steam heated driers are available within the group, with a test plant.

Download Evaporator Brochure