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The oil extraction production line has three main steps: oil pretreatment, oil leaching section, and oil refining section.

The pretreatment stage is to remove the impurities from the raw material, change the shape and the inner structure, so as to satisfy the needs of oil production.

1. Cleaning: Use cleaning equipment to remove impurities contained in seeds in order to reduce the abrasion of equipment.

2. Peeling: Use a peeling machine to remove the shells of the seeds, increase the oil yield, and reduce the abrasion of the equipment. (If the oil volume is small, this step can be omitted).

3. Embryo rolling: Destroy the oil cells with the embryo rolling machine and increase the contact area between the device and the oil. Therefore, the rolling embryo is advantageous to increase the steaming and frying efficiency and increase the oil yield. (This step may be omitted if the amount of oil is small)

4. Steaming and frying: Use a steaming and frying pan to adjust the moisture and temperature of the seeds to achieve a good state before pre-pressing.

5. Pre-pressing: Use a pre-pressing machine to squeeze out part of the oil in the raw materials.

In the leaching section, the oil is extracted by solvent, which can obtain the oil in the cake and reduce the loss of oil.

1. Edible oil extraction system: Use solvent to extract oil in cake.

2. Wet meal desolventizing system: Separate meal and solvent through the evaporation system to obtain dry meal, and the solvent can be recycled.

3. Mixed oil processing system: Direct steam heating the mixed oil to separate the seed oil from the solvent to obtain crude oil.

4. Solvent recovery system: recover solvents for recycling and reduce solvent consumption.

The refining section is to remove the impurities in the crude oil and obtain the used oil that meets the national edible standards.

1. Degumming: remove colloidal impurities and prepare for the subsequent refining section.

2. Deacidification: remove free fatty acids in crude oil.

3. Decolorization: Add activated clay to absorb the pigment in the crude oil to speed up the quality of the oil.

4. Deodorization: remove the peculiar smell in the oil, improve the taste, taste and quality of the oil.

5. Dewaxing: Remove wax in the oil and improve the quality of the oil.

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