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Why should edible oil be refined?

September 08, 2021

In recent years, people's requirements for daily essential edible oils have become higher and higher. They are no longer solely realized in ordinary pressed edible oils. People demand healthier and better-tasting refined edible oils to flood the market for selection. After refining, the edible oil is clear and free of impurities, not only has the visual effect beautiful, but also has high economic value. As for the deeper reasons for edible oil refining, let's listen to the answer from the manufacturer of Zhongxing's oil equipment.

As the name suggests, edible oil refining refers to the process of using oil refining equipment to remove impurities from crude oil, extract essence, and purify it. Impurities contained in unrefined edible oil are mainly cake crumbs, peptic impurities, free fatty acids, pigments and odor substances. The reason for refining is to reasonably filter out the cake crumbs, peptic impurities, free fatty acids, pigments and peculiar smell substances contained in the pressed or leached crude oil, so as to be more suitable for eating and storage, and to improve the consumption of edible oil. Value and market value.


edible oil


The specific process flow of edible oil refining is as follows:

1. Degumming

Degumming utilizes the hydrophilicity of peptic impurities-phospholipids. Hot water is added to hot crude oil. Under agitation, the peptic impurities absorb water and agglomerate. After standing for precipitation, the gum is discharged.

2. Deacidification

Add lye to the deacidification equipment to remove free fatty acids after the acid-base neutralization reaction.

3. Decolorization

The decolorization section is carried out in the decolorization pot, the pigment and other impurities in the crude oil are removed by the adsorption effect of the clay, and then the waste clay is filtered out with a leaf filter to achieve the purpose of decolorization.

4. Deodorization

Using the steam stripping deodorization process, direct steam is passed into the deodorization equipment, the temperature of the deodorized oil is raised to 260°C, and the difference in volatility of crude oil and odor substances is used to achieve the purpose of deodorization.


edible oil refining equipment


After the above four stages of processing, the refined edible oil has pure color and mellow taste, and all ingredients meet national standards. It can be sold directly on the market or provide raw materials for deep-processed products.

The edible oil refining equipment produced by Henan Zhongxing has evolved from simple refining to today's deep processing of fats and oils, focusing on a series of processes such as impurity removal and precipitation, degumming, deacidification, decolorization, and deodorization. This is undoubtedly a major innovation in the industry. Whether it is equipment material or refining efficiency, Henan Zhongxing can truly help you achieve stable investment and high returns! If you have any needs, please leave a message below for consultation.