Large Scale 50-100T/D Pre-press and Pre-treatment Processing Line
Specifications
1,large capacity and high efficiency2,continuous working
3,competitive price
4,quality guaranteed
1. Technical process:
1. Cleaning
A good pretreatment process is start from cleaning. Cleaning is very important not only because it can ensure the quality of the final product (oil and oil cake), but also avoid early wear to the pre-treatment equipment. Cleaning usually adopts screening separation machine, decorticator machine and stoner to remove hull, impurities, stones, sands, metal etc.
2. Shelling of oil seeds
Increasing the protein content of the oil cake.
3. Cracking
Decreasing the size of oil seeds.
4. Cooking/Quenching and tempering
Reducing the viscosity of product oil and adjusting the moisture of oil seeds.
5. Flaking
Destroying the cell structure of oil seeds to extract oil easier.
6. Puffing
According to different raw materials, it maybe used sometimes to optimize extraction characteristic of oil seeds.
7. Steaming and roasting
During cooking and quenching and tempering, oil seeds are heated and moisture is adjusted to ideal state. Cooking usually use vertical stack cooker and horizontal cooker. Either cooker adopts steam as the heating medium. If for pressing, oil seeds should be heated to 90-110 centigrade; while for extraction, oil seeds should be heated to 65-72 centigrade.
8. Two ways for oil mill to extract oil
one is Completely Mechanical Press (residual oil in cake is 7-8%). The other is Low-voltage Pre-pressing (residual oil in cake is 12-20%), and after pre-pressing, the oil will be extracted from oil cake by solvent. ll structure of oil seeds to extract oil easier.
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