1. Solvent Extraction

Conditioned flakes are immersed in solvent (hexane) within a sealed extractor. Solvent dissolves oil from solids, producing miscella (oil+solvent) and solvent-wet meal.

2. Meal Desolventizing D.T.D.C

Wet meal enters DTDC where direct and indirect steam strip residual solvent. Steam vaporizes solvent while drying and cooling meal for safe storage.

3. Evaporation System

Miscella passes through evaporators where indirect heating vaporizes solvent. Rising film evaporators concentrate miscella, removing most solvent from crude oil.

4.Solvent Recovery

The n-hexane evaporated from each section is recycled to solvent tank through the condenser. The uncondensed gas enters the exhaust condenser and most of the uncondensed n-hexane is condensed.