Crude soybean oil contains phospholipids, free fatty acids, pigments, moisture, and other impurities. To produce high-quality edible oil, the crude oil usually requires refining after extraction.
The required soybean oil refining equipment depends on the crude oil quality, production capacity, refining method, and final product specifications. A well-designed system helps improve oil quality and maintain stable production.
Soybean Oil Refining Equipment
Degumming Equipment
Degumming removes phospholipids and other gum-forming substances from crude soybean oil. The equipment typically includes a mixing tank, dosing system, and separation equipment, such as a centrifuge.
Effective degumming prepares the oil for subsequent refining stages and helps reduce processing problems.
Neutralization Equipment
In chemical refining, the neutralization section uses a controlled amount of caustic soda to react with free fatty acids. The resulting soapstock is then separated from the oil.
This section typically includes a reaction tank, dosing system, and separation equipment. The configuration depends on the plant capacity and operating method.
Bleaching and Filtration Equipment
Bleaching removes pigments and helps reduce certain oxidation products and trace impurities. The main equipment includes a bleaching vessel, vacuum system, and filter press or leaf filter.
First, bleaching earth is mixed with the oil under controlled conditions. Then, filtration removes the spent bleaching earth and produces cleaner oil for deodorization.
Deodorization Equipment
Deodorization removes unwanted odors and volatile compounds through steam stripping under high temperature and vacuum. Depending on the process design, it can also reduce residual free fatty acids.
The deodorizer, vacuum system, steam supply, and heat-exchange equipment are important parts of this section. Operating conditions must match the oil quality and required final specifications.
How Refining Connects with Oil Extraction
The complete soybean oil extraction process starts with soybean pretreatment and continues through mechanical pressing or solvent extraction. If solvent extraction is selected, a soybean oil solvent extraction machine and associated soybean solvent extraction equipment recover oil from prepared soybean flakes or pre-pressed cake.
The resulting crude oil then enters the refining section. Extraction and refining are separate stages, but both are essential when a project aims to produce refined edible soybean oil.
Complete Soybean Oil Refining Solutions from Guance Machinery
Guance Machinery provides customized equipment and process solutions for each soybean oil extraction plant. We select the refining configuration according to crude oil analysis, processing capacity, product requirements, and the customer’s investment plan.
Choosing suitable soybean oil refining equipment helps improve oil quality, processing efficiency, and overall plant performance.
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