Processing cottonseed with a combination of extrusion cooking and Expeller® pressing can reduce oil residuals to less than 6% while minimizing toxins. One ton of crushed cottonseed yields about 45% meal, 27% hull, 16% crude oil, and 8% linters.
What is cottonseed oil plant?
The cottonseed oil plant includes cottonseeds pretreatment and prepressing workshop, cottonseed cake solvent extraction workshop and crude cottonseed oil refinery plant. The residual oil rate in the cottonseed meal is lower than 1%. Cottonseeds contain a toxic pigment which called gossypol, of which the content is 0.15%-1.8%.
How to extract oil from cottonseeds?
If your cottonseeds are with lint, then you need to add cottonseed delinting machine in the cottonseed oil plant. Oil extraction is using the organic solvent to extract oil from the pre-pressed cake inside the oil extractor.
How is cottonseed processed after extrusion?
After extrusion, cottonseed can be fed into a screw press like the Anderson Oil Expeller®, which uses physical force to separate the oil from the solid meal. Processing cottonseed with a combination of extrusion cooking and Expeller® pressing can reduce oil residuals to less than 6% while minimizing toxins.