The solvent extract process is the basic principle of using solvent, can dissolve grease by wet permeability, molecular diffusion and convection diffusion effect, the material came out of the germ oil extraction
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 DTDC
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.
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