There are two types of peanut oil pressing with shell and without shell. If it is shelled peanuts, we need to equip a peanut shelling machine, first shelling and then squeezing, because this can improve the oil processing capacity and oil yield. The extraction of peanut oil can be divided into cold pressing and hot pressing. Below I will show you the two methods of extracting peanut oil.
Peanut oil cold pressing process:
1. Clean up
The peanut cleaning process is the process of removing impurities. The removal of impurities is beneficial to storage and transportation, improves the quality of grease and oil yield, and reduces equipment wear. We will remove the rocks, soil, stems and leaves contained in the peanuts. The impurity content must not exceed 0.2%. When cleaning peanuts, we often use a flat rotary sieve to clean peanuts.
2. Drying
Drying peanuts is to reduce the moisture content of peanut kernels, facilitate peeling, and reduce protein denaturation. In the process of drying peanuts, the temperature is required to be within 60 degrees.
3. Peeling
We need to peel the peanut kernels that are cooled to about 40 degrees after drying, so that the peeling rate can reach 98%, and the peeling can increase the oil yield of the oil.
4. Broken
Peanut crushing is to increase the surface area of the oil, which is conducive to softening and increasing the oil yield. The particle size of peanut crushing requires 6-8 petals, and the moisture content is controlled between 7%-12%.
5. Squeeze
We choose a round row oil press for cold pressing, and the cold pressing temperature is controlled below 60 degrees, so that the oil yield is high. The thickness of the cake is controlled at 0.7-1.33mm. Cold pressing is generally not clean, and it needs to be pressed twice and three times.
6. Filter
Commonly used equipment for filtration includes plate and frame oil filter, vacuum oil filter, and air pressure oil filter. We generally recommend the plate and frame oil filter, which is cheap, easy to use, and clean. But we can recommend a suitable oil filter according to customer needs.
Advantages of cold pressing: (1) Physical pressing, no solvent residue. (2) The color is bright and beautiful (3) Freshly squeezed and sold, safe and hygienic (4) Less oily smoke
Disadvantages of cold pressing: (1) One-time pressing is not clean and needs to be pressed repeatedly (2) The oil has no hot pressing fragrance
Summary of cold pressing process:
Simple process: cleaning-squeezing-filtering
Complex and complete process: cleaning-drying-peeling-crushing-pressing-filtering
Peanut cold-pressed oil production line machine configuration:
Simple process: flat rotary screen-oil press-oil filter
Complex and complete process: plane rotary screen-dryer-peanut sheller-conveyor-crusher-oil press-oil filter
Advantages of cold pressing: (1) Physical pressing, no solvent residue. (2) The color is bright and beautiful (3) Freshly squeezed and sold, safe and hygienic (4) Less oily smoke
Disadvantages of cold pressing: (1) One-time pressing is not clean and needs to be pressed repeatedly (2) The oil has no hot pressing fragrance
The above is the detailed peanut oil pressing production process. The engineers of Benteng Machinery will customize the peanut oil squeezing production plan according to the specific situation of each customer, and equip the corresponding peanut oil processing equipment, so that the customer’s investment budget can be reasonably used. If you are preparing a peanut oil squeezing production project and are looking for a peanut oil processing equipment manufacturer, then you can contact us, and the Benteng Machinery team will serve you wholeheartedly.
