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Solvent vapours mixed with air depart the extractor, solvent vapours mixed with water vapour depart distillation, and a mixed water/solvent liquid stream departs distillation. The purpose of solvent recovery is to condense the solvent vapour and water vapour, then physically separate the liquid water from the liquid solvent such that the solvent can be recycled back to the extractor, and the waste water can be safely discharged from the plant. Desmet Ballestra optimizes the sizing and design of the solvent recovery equipment with its state-of-the-art OptiSim™ software tools to achieve optimum efficiency.

For rapeseed and sunflower


Advantages

Maximum Heat Recovery to Save Steam
  • Countercurrent, split flow Vacuum Condenser maximizes vacuum to enable maximum heat recovery of DT exhaust vapours in the First Stage Evaporator
  • Stripper Precondenser enables heat recovery of stripper exhaust vapours to heat solvent before going to the Solvent Heater
  • Vacuum Condenser Steam Ejector exhaust vapour heat is fully recovered in the Waste Water Stripper
Ideal Solvent/Water Separation to Enhance Extractor Efficiency
  • Emulsions prevented via no Vacuum Condenser Pump to emulsify entrained oil
  • Solvent/Water Separator with laminar flow sieve plates to speed separation
  • Solvent Cyclone to insure water droplets are removed from solvent
Low Solvent Loss
  • Square tube pitch in condensers to minimize pressure during upset conditions
  • Efficient two-stage Waste Water Stripper to minimize solvent in water effluent
Simplicity
  • Only one pump required, to pump solvent to the extractor
 

For soya


Advantages

Maximum Heat Recovery to Save Steam
  • Countercurrent, split flow vacuum condenser maximizes vacuum to enable maximum heat recovery of DT exhaust vapours in the First
Stage Evaporator
  • Stripper Precondenser enables heat recovery of stripper exhaust vapours to heat the drying air entering the meal Dryer Cooler
  • Solvent Preheater enables heat recovery of excess DT exhaust vapours to heat solvent prior to the Solvent Heater
  • Vacuum Condenser Steam Ejector exhaust vapour heat is fully recovered in the Waste Water Stripper
Ideal Solvent/Water Separation to Enhance Extractor Efficiency
  • Emulsions prevented via no Vacuum Condenser Pump to emulsify entrained oil
  • Solvent/Water Separator with laminar flow sieve plates to speed separation
  • Solvent Cyclone to insure water droplets are removed from solvent
Low Solvent Loss
  • Square tube pitch in condensers to minimize pressure during upset conditions
  • Efficient two-stage Waste Water Stripper to minimize solvent in water effluent
Simplicity
  • Only one pump required, to pump solvent to the extractor