Extraction is a chemistry way to extract oil from seeds and cakes. It makes use of Solvent extraction principles,which makes Hexane solvent come into seeds/cakes .Then oils and fats is dissolved from mixed oil when we finished the raw materials pretreatment,BTW, we can process various oil seeds, such as soybean,sunflower seeds, cotton seeds,rice bran, groudnut/peanut seeds,rapeseeds,sesame,castor seeds etc. And i listed their oil content belows, here let us say soybean, the moisture of soybean need to be 90%.So we must control.
The soybean is processed by oil fatty extracted – wet meal desolvation – mixed oil evaporation-steam stripping- solvent recovery.
Material embryos→Extraction→Wet meal→Evaporation→Cooling→Product meal packing
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Mixed oil→Filter→Negative pressure evaporation → Crude oil
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Solvent recovery
| Power consumption | 36KWH / t |
| Steam consumption | 280 kg / t |
| Pre-pressed cake thicknes | ≤17mm |
| Pre-pressed cake moisture | ≤4-6% |
| Pre-pressed Residual oil | ≤14-16% |