50TPD Automatic Edible Oil Extracting Machine
50TPD automatic edible oil extracting machine
1. Pre-treatment Process :
Pre-press means to make the raw material to the condition required by oil press by a series work of cleaning, husking, peeling, crushing, softening, flaking, puffing, wet and hot treating, and drying.
Pre-press is widely used in raw materials of high oil content. Such as: peanut, sunflower seed, rapeseed, castor bean, corn germ, tea seed, rice bran and sesame.
2. Solvent extraction Process:
After pre-pressiing, most crude oil pressed out, while there is some percentages still inside the raw material. To get all oil pressed out, we need to take solvent extracting method. There are many advantages in solvent extraction:
a). high oil pressing rate, oil residual is no more than 1% in cake,
b). convenient for big capacity production,
c). high automatic control,
d). closed production condition, low temperature press, clean working condition,
e). easy access to solvent.
3. Refining Process:
Degumming and deacidification: The gumming is moved by phosphoric acid and hot water. There are
two ways to move the acid in the edible oil. One is chemical way, the other one is physical way.
The chemical way is using NaOH to react with acid. This way is suitable for the capacity of 5-30T per day. The physical way is using steam and centrifugal to move the acid. This way is used for
capacity from 30-2000T per day.
Decolorization: This step is used to adjust the color of the oil. You can control the color of the edible oil according to the requirement of your market.
Deodorization: The function of this step is to move the special smell in the oil. This is an important
standard for refined edible oil.
---Quality Index of Finished Products:
Oil residue of sunflower meal: ≤ 1.0%
Moisture of meal: 12% (adjustable)
Solvent residue of sunflower meal: ≤ 500PPM
Total volatiles matter of crude oil: ≤ 0.2%
Residual solvent of crude oil: ≤ 100PPM
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