The peanut oil production line is the extraction process of fragrant oil from peanut kernel by adopting the unique pressing technology. Peanuts are high-oil-containing oilseeds. Currently, the unique pressing processes are suited to extract high-flavored edible oils, which has really achieved “no chemical production”. The fragrant peanut oil obtained by pressing process maintains the natural ingredients and aroma of peanut oil, and it is rich in antioxidant vitamin E and has a long shelf life, so there is no need to add chemical antioxidants for storage; it is a pure natural oil products that are produced by combination of modern and traditional technology. With the improvement of living standards, the fragrant peanut oil is deeply loved by consumers for its unique pure fragrant flavor and have a broad market prospect. And the production line can be customer-made according to material variety, factory location, and labor resource.
Peanut Oil Production Process and Operating Points
In order to ensure the nutrition, flavor, and safety of fragrant peanut oil and reduce the cost, we adopt a physical squeezed method in the peanut oil production line. And the features of the pressing line are: (1) Extraction adopts pure physical pressing method to completely avoids the contact of raw materials and chemical solvents throughout the entire production process; (2) To abolish the unfavorable refining process which affects the quality of finished oil, such as solvent leaching, alkali refining and deodorization, so as to ensure the natural nutrients in the refined oil. (3) The refined oil is stored in an underground storage and the cooling water coil technology is used to ensure long-term storage.
1. Production Processes
1.1 Raw Material
The raw material which is used to produce fragrant peanut oil is fresh, full-grained, undamaged, mildew-free, free of insects and has not undergone an aging period. Raw materials would be cleaned by removing immature, damaged, and moldy grains during the cleaning process.
1.2 Process Flow of Peanut Oil Production Line
1.3 Process Parameters and Procedures
Peanuts are cleaned and shelled, medium-sized peanuts are screened (about 25% of the treated amount), and the rest are large- and small-sized peanuts (about 75% of the treated amount). The large-sized and small-sized peanuts are broken, rolled and steamed. The medium-sized peanuts are crushed and cleaned by red skin eliminator, then being baked. Finally, the three sized materials are mixed and then pressed in the press to obtain the crude oil. After pressing, the oil is settled and filtered to produce a fragrant peanut oil.
1.4 Operating Points
Stones, metals, etc. may damage mechanical equipment; moldy, insect-infested peanuts will seriously affect the quality of the oil. In order to reduce oil loss, improve oil yield, ensure high quality of oil, and prolong the service life of equipment, the cleaning process should be strictly controlled. Metals could be removed by magnetic separation, using magnets to remove magnetic impurities in raw materials. Other impurities like stones are removed by self-regulation vibrating sieve, using peanuts and impurities’ difference in the particle size and weight, with the help of peanuts and impurities in the relative movement of the screen surface.