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DESCRIPTION OF PROCESSES:
1.Pretreatment Equipments which is pretreat the raw material include: shelling equipment, Separating equipment, Sieving equipments.
2.Prepressing Equipments include: oil prepressing equipements, Steam and frying machine.This step is press the raw material into crude oil.
3.Leaching Equipments include extracting equipment, Desolventizer toaster.This step is separate oil from the oil meal.
4.Oil refining equipment: Oil pump, Oil filter, Decolouration.
SOLVENT EXTRACTION:
It refers to the process of extracting oil from oil bearing materials by means of solvent. Solvent always use a petroleum by-product, usually Hexane. Solvent extraction plant, however, is one of the most important oil plants in the entire oilseed processing.
DESCRIPTION OF LEACHING WORKSHOP:
First, the pre-pressed cake goes through the stor box, and then the enmasse conveyor convey the pre-pressed cake to the rotary-type extractor through the seal auge.
The rotary-type extractor rotates at the speed of 90-110miutes per circle, at the same time the pumps spray solvent to the rorary-type constantly.
Thus, this process makes sure that the cake can be completely soaked, so that the oil in the cake can dissolve to the solvent maximumly and becomes the miscella(solvent and oil).
After the soakage, the cake will becomes wet meal. The next thing should to be done is to separat the solvent in the miscella, and the solvent in the wet meal.
The miscella will be sent to the 1st miscella tank by the pump, then add 10% saline water to it. Along chemical reaction with the saline water, the phospholipid and impurities in the miscella will expand, cohesion and precipitate at last. So that can reach the goal of purifying the the miscella.
Next, pump miscella into raising film evaporation through the 2nd tank. Most solvent will be gasified and evaporated when be heated due to low steam point thus LDly improve oil concentration. It can get rid of 85% solvent first time and 95% solvent for the 2nd evaporator's processing. And residual solvent will be removed after gas stripping treatment.
Wet meal will be conveyed into desolventizer-toaster(DTDC)for desolventizing. Separated solvent gas will go to condenser and enter into water separator after cooling. Since the solvent density is smaller than water density, solvent will flow into solvent tank for recycling.
Crispy Rice Food Processing Line
