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mini oil mill
soybean mini oil mill
The whole soybean oil extraction machine contains three workshops: soybean pretreatment workshop, soybean oil extraction workshop and soybean oil refining workshop.
1. Craft flow for soybean mini oil mill
soybean → magnetic box → cleaning → crusher → soften → flaking roll → cooker → oil press(chosen) → to extraction workshop
Main Equipments:
1. Soybean: It’s one of main oil seeds from human. It’s used to make soybean oil around the world.
The oil content in soybean seed is about 18-21%.
2. Magnetic box: Clearing the iron impurity which might be in the soybean. The iron impurity will be harmful to the following machines, so we need take the iron impurities out.
3. Cleaning: This parts have different size cleaning sieves to clean the different impurities. After going through this part, most of the impurities are moved from soybean.
4. Crusher: Because of the big size of soybean, it need to be crushed to small pieces. The crusher will help to get more soybean oil from the seeds.
5. Soften: This is a special step for soybean oil making. This step improves the ductility of soybean. Then the flake will be thin and not fragmentary. This is helpful to the oil press part and oil extraction part.
5. Cooker: This machine can adjust the water content of the soybean. It’s also good for the press and oil extraction section.
6. Press: The press machine is used to take parts of the oil in the soybean, when the capacity is low. It is not needed in the soybean oil extraction way. If you using solvent extraction way to get soybean oil, the flake can be sent to oil extractor directly from cooker.
2.Craft flow for soybean mini oil mill
solvent
↓
extractor → mixed oil → 1st and 2nd evaporation → stripping tower → crude soybean oil
Wet meal → DTDC toaster → soybean cake
Main Equipments:
1. Solvent pumps: continuously spray solvent to the rotary-typr extractor.
2. Roary extractor: spray and soak the soybean cake with solvent so that oil fats can be dissolved in solvent (form miscella). After processing, you can get wet meal and miscella (mixed oil).
3. DTDC: used to separate the solvent from the wet meal.
4. Miscella tank 1st: pump the miscella ( oil with solvent) into the miscella 1st, then add 10% saline water to it. The phospholipid and impurities in the miscella will react with the saline water, at last the reactant precipitate, reaching the goal of purifying.
5. Miscella tank 2nd: the purified miscella will be pumped into it.
6. Miscella stripping: it will remove the remaining solvent in miscella. And the solvent will be discharged to condenser for recycling.
7. Condensers: used to cooling the solvent gas separated from the wet meal and miscella for recycling.
3. Craft flow for soybean mini oil mill
Crude soybean oil → degumming and deacidification→ decolorization →deodorization → refined soybean oil.
Main Process:
1. Degumming and deacidification: The gumming is moved by phosphoric acid and hot water. There are two ways to move the acid in the soybean 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.
2. Decolorization: This step is used to adjust the color of the oil. You can control the color of the soybean oil according to the requirement of your market.
3. Deodorization: The function of this step is to move the special smell in the oil. This is an important standard for refined soybean oil.
the specification of crude soybean oil
Item |
Standard |
Smell and taste |
The original smell and taste of soybean oil |
Moisture and volatile matter (%) ≤ |
0.20 |
Insoluble impurities (%) ≤ |
0.20 |
Acid value (mgKOH/g) ≤ |
4.0 |
Peroxide value (mmol/kg) ≤ |
7.5 |
the specification of refined soybean oil
Item |
Standard |
Color (Lovibond Cell 133.4mm) ≤ |
R2.0 Y20 |
Smell and taste ≤ |
No smell and good taste |
Transparence ≤ |
Clear and transparent |
Moisture and volatile matter (%) ≤ |
0.05 |
Insoluble impurities (%) ≤ |
0.05 |
Acid value (mgKOH/g) ≤ |
0.20 |
Peroxide value (mmol/kg) ≤ |
5.0 |
Smoke point (°C) ≥ |
215 |
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