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Groundnut Oil Production Line

Dingsheng Machine provide groundnut oil press technology (hot press and cold press), solvent extraction technology, refining technology, fragrant peanut oil technology and recover higher quality groundnut protein. Dingsheng Machine is committed to optimizing technology processes, reuse processing by-products while increasing annual output, help groundnut oil mill achieve higher processing capacity and improve their products quality and profit.
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Product Description
Groundnut pretreatment process:
The groundnut should firstly be pretreated by professional seed cleaning equipment. Then the cleaned peanut seeds are sent to the oil milling plant to be pressed into oil by oil presses. However, the crude peanut oil usually contains a number of impurities.

So for edible oil, the pressed groundnut oil needs to be extracted in the oil extraction plant before the extracted oils are sent to the oil refining plant for further processing.

Groundnut oil pressing process:
Pressing groundnut oil is made by squeezing method, and the leaching groundnut oil is made by solvent extraction.
Due to the high residual oil rate of the pressing process, the content of residual oil is about 6%-8%. Large oil mill usually use a pre-squeezing leaching process to produce groundnut oil.

Pre-squeezing leaching process is first squeezing the most of oil, and the groundnut cakes are performed for solvent extraction, further extract the oil left in the oil cake, and increase the oil output rate of the oil.

Groundnut cake solvent extraction process:
The solvent extraction equipment can reduce the residual oil in the cake to within 1%, the quality of the cakes is improved, and the protein and other substances in the cake can be better retained.

Groundnut crude oil refining process:
The crude groundnut oil is processed through refining equipment to remove gum, free fatty acids, water, pigment, odor, wax, solvent residue and other impurities in the oil, to ensure the safety of edible oil and improve the quality of the end oil.
Fragrant peanut oil refining process:
The squeezing process retains the original flavor and nutrition of the groundnut oil, which can be processed into a fragrant peanut oil with physical refining.

The fragrant groundnut oil process is mixing the extraction oil from groundnut kernel roaster and steaming cooker. The main equipment include seeds roaster, screw presses, filter machines, refining system, and low-temperature filtration equipment.

The refining workshop uses a low temperature process, twice filtering and cooling, generally does not perform hydration, alkaline refinery, decolorization and deodorization, fully retain the original flavor of groundnut oil.

Highly refined groundnut oil may use both mechanical and chemical processes to extract the oil through multiple steps. Groundnuts are steamed and crushed using high heat to extract the oil, which is further refined through a variety of processes that eliminate pigments, aromas or flavors from the oil.
Continuous groundnut oil refining plant utilizes physical oil refining method to make extracted crude groundnut oil into first grade groundnut oil. The advanced equipped continuous groundnut oil refining plant is low refining loss rate, and high oil yield rate.
Edible Oil Processing With Dingsheng Machine
Dingsheng Machine is a leading manufacturer specializing in edible oil processing solutions and equipment in China, we provide complete plant solutions for oilseeds pretreatment, solvent extraction, refining and deep processing. More than 20 years’ experience, we are committed to optimizing technology processes, engineer design, project management, installation and training, help customer build the oil mill over the world. When you plan to build an vegetable oil processing plant, please contact us today to get the quote.
Email: company@dingmachinery.com, whatsapp: +86-159 3716 3029.
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