Peanut Oil Production Line
We can provide the equipments to process different capacity of peanut/ groundnut. They bring unrivalled experience to bear in producing accurate drawings detailing foundation loadings, building dimensions and overall plant layout designs, tailor made to suit individual requirements. The peanut oil production is advanced, fully considering energy saving, environmental protection and heat energy recycling, etc. High-performance, high-quality equipment coupled with Overseas door-to-door installation service ensures long-term stable operation of the equipment.Peanut Oil Pressing Methods
Generally, the husk content of peanut is 30-35%, and the oil content in peanut kernel is 40-50%. Therefore, the peanut pretreatment processes include cleaning, dehusking and separating of hull & kernels. According to pressing temperature, there are two peanut oil pressing technologies: hot pressing and cold pressing.
Processing Steps of Peanut Oil Production Line
Peanut Cleaning
There are impurities in peanuts before processing. First, a vibrating screen is needed here to remove the impurities from the groundnut. After screening, the impurity content is no more than 0.5%, and the groundnut kernel content in removed materials is no more than 1%. Then the stone is separated from the peanut by a destoning machine.
Peanut Shelling and Separating of Hull & Kernels
When the peanut sheller works, the groundnut are delivered into the hopper quantitatively, uniformly, and continuously. Under repeated strikes, friction, and collision of the rotor, the peanut hulls are broken. Then the groundnut kernels and broken hulls pass through the sieve in a certain hole diameter (the sieve of big hole diameter for the first shelling, and a small hole diameter for the second cleaning). Under the blowing force of the rotating fan, the peanut husks in lightweight are blown outside, and the groundnut kernels pass through the sieve to achieve the cleaning effect.
Peanut Kernels Crushing
The purpose of this process is to crush the peanut into a certain granularity, which can meet the condition for flaking. After crushing, the surface area of peanut is increased, better for the transfer of temperature and moisture when softening. The peanut crushing machine is mainly the toothed cracking roll.
When toothed cracking roll works, the upper layer roller chute can crush the peanut kernel into 3-4 pieces, and the lower layer roller can crush the kernels into the half.
Softening, Flaking and Cooking
The purpose of this process is to crush the peanut into a certain granularity, which can meet the condition of flaking. After crushing, the surface area of the groundnut is increased, better for the transfer of temperature and moisture when softening.
The peanut kernel is soft, normally it does not need to be softened. Sometimes it can be flaked directly only after the suitable heat treatment. Generally, cooking is adjusted according to the conditions required for hot pressing. When the moisture content is close to 1-2% and the temperature reaches 120-130℃, it is time to finish cooking and begin to press.
Peanut Oil Pressing
Peanut Oil Refining Process
After a long period of precipitation, the crude peanut oil can be filtered by a filter and sent to a refining plant. The pressed cake can be crushed and sent to an extraction plant for secondary extraction, extraction oil is refined and sold as ordinary oil.
Refining is to remove impurities, odors, and pigments from groundnut oil and improve the quality and taste of the oil. The refining process mainly includes steps such as degumming, deacidification, decolorization, and deodorization.