1. Introduction:
The complete oil making system is for oil pressing, oil extraction and oil refinery from various oil seeds such as cottonseed,
rapeseed, high-oil sunflower seed, peanut kernel, soybean, etc.
Before prepressing, you have to pretreat oilseed by cleaning, screening separation, washing, hulling, softening, flaking,
cooking etc.
After pretreatment and prepressing, you can get crude oil and cake. Then crude edible oil go to refinery workshop, cake go to
extraction workshop( extracting oil by solvent), after this we will get crude oil. Then by refinery process you will get edible oil(grade 1.2.3.4 depend on you )
2. Features:
Compared with single pressing, the process of prepressing-leaching has the following advantages.
(1).High quality crude oil
The pressure for prepressing is lower than single pressing therefore the former can get light color crude oil which is good for
refining into high quality edible oil.
(2).Simple operation
Prepressing has less requirement to oilseed pretreatment. Thicker flakes and shorter cooking time increase the handling capacity.
(3).Good for solvent extraction
High moisture prepressing cakes contribute to solvent penetration and improve extraction speed and lower the residual oil in
dry meal thus good for desolventizing drying and reducing solvent loss.
(4).Long service life of machine spare parts
For prepressing, the pressure in barrel is small, so the vulnerable parts won't easily damage. Usage life can be prolonged.
(5).Lowering steam consumption
Prepressing needs low temperature and high moisture which accordingly lower the steam consumption during cooking.
Therefore, prepressing-leaching has more advantages over single pressing, which can effectively improve the crude oil and meal quality thus enhance
economic performance
