• Complete Equipment List for Large-Scale Rapeseed Oil Production Line（3）

  2026-04-13 14:57:27

Large-scale rapeseed oil crushing production line complete set of equipment details (1)

Large-scale rapeseed oil pressing production line (suitable for daily production capacity of 50-500 tons/day, meeting large-scale industrial production), is divided into four sections: pretreatment section, oil pressing section, refining section, finished product storage and filling section.

Equipment in each section operates linked to ensure the automation and efficiency of the whole process from rapeseed raw materials to qualified edible oil. The following is a detailed description of each equipment (including functions, specifications, functions, and adaptation to customer needs):

Rapeseed Oil Refining section

The crude oil after preliminary filtration can remove impurities, peculiar odors and harmful substances, and reach the edible grade standard, which is suitable for edible oil standards in different regions.

The large production line adopts continuous refining, and the whole process is automatically controlled to ensure the stable quality of refined oil. The specific equipment according to the refining process is as follows:

1. Hydration Degumming Tank

Function: Add an appropriate amount of warm water (or brine) to the crude oil, combine the colloidal impurities (such as phospholipid and colloid) in the crude oil with water by stirring to form flocculant precipitate, and then remove the colloidal impurities (degumming rate ≥98%) by precipitation and separation; The degummed crude oil improves the stability and avoids delamination and turbidity in the subsequent refining process.

2. Alkali Refining Tank

Function: Add edible-grade lye solution (such as sodium hydroxide solution) to the degummed crude oil to neutralize the free fatty acids in the crude oil to generate soap feet (which can be recycled for making soap and biodiesel), and then remove the soap feet through a separation device to reduce the acid value of the crude oil (acid value ≤0.5mgKOH/g, which meets the edible standard), and remove some impurities and peculiar odors at the same time.

3. Decolorization Tank + Clay Dosing Device

Function: Add food-grade activated clay to the deacidified crude oil, stir under vacuum and high temperature conditions, and use the adsorption action of clay to remove pigments (such as chlorophyll and carotenoids), peculiar odor substances and residual impurities in the crude oil, so that the oil color becomes clear and transparent (reaching the first-grade rapeseed oil color standard), and at the same time improve the stability of oil.

4. Deodorization Tower

Function: Under the condition of high temperature and high vacuum, steam is introduced into the deodorization tower, and the volatile odor substances (such as aldehydes, ketones and free fatty acids) in the oil are removed by steam stripping, and the residual trace soap feet and white clay particles are removed at the same time, so that the rapeseed oil can reach the edible grade standard, with light taste and no odor, which meets the relevant standards.
 

5. Fine Filter

Function: Final fine filtration of deodorized oil to remove residual trace clay particles, impurities and suspended matter, ensuring that the refined oil is clear and transparent, of uniform quality, and reaches the quality standard of first-grade rapeseed oil (in accordance with GB 2716-2018, EU EC 1881/2006 standard).

6. Auxiliary equipment (necessary for refining section)

Vacuum system: It is composed of vacuum pump and vacuum tank, which provides high vacuum environment for deodorization and deodorization to ensure deodorization and decolorization effect.

Thermal oil furnace: It provides a stable heat source for steaming wok, degumming tank, deacidification tank, decolorization tank and deodorization tower. It can be heated by natural gas, diesel oil or electric, with low energy consumption and uniform heating.

Oil-water separator: Separate wastewater and grease produced in degumming and deacidification process, recycle grease, reduce waste, and treat wastewater at the same time, in line with environmental protection requirements.

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