Core Function: Separates solvent from oil-solvent mixture (miscella) to produce concentrated crude oil.
Pre-treatment: Miscella from leacher is filtered/centrifuged to remove solids.
Multi-Stage Evaporation:
1st Stage: Long-tube (rising-film) evaporator at 60–70°C → Concentrates miscella to ~60% oil.
2nd Stage: 90–120°C → Concentrates to 90–95% oil.
Steam Stripping: Residual solvent removed via direct/indirect steam in stripping column under vacuum.
High-Efficiency Evaporation: Thin-film design in long-tube evaporators enhances heat transfer.
Vacuum Operation: Lowers solvent boiling point, reducing energy consumption.
Solvent Recovery: Vapors condensed and recycled.
Progressive Concentration: Two-stage evaporation minimizes thermal damage.
Used in oil processing (soybean, rapeseed, sunflower) and solvent-liquid separation industries.
High Oil Purity: ≤0.1% residual solvent.
Energy-Efficient: Vacuum + staged evaporation cuts steam use by 25–30%.
Eco-Friendly: >99% solvent recovery rate.
Low Maintenance: Robust design ensures continuous operation.
