What are sunflower oil refining process technologies?

Crude sunflower oil contains some impurities, including colloid impurities, free fatty acids, pigments, odors, waxes, etc. Crude sunflower oil needs to be refined to obtain high-quality sunflower oil that meets national standards. So what are the sunflower oil refining process technologies? The sunflower oil refining process mainly includes five parts: degumming, deacidification, decolorization, deodorization and dewaxing. The following is the introduction of the main steps and functions of sunflower oil refining process technologies.

1. Degumming

The first step of sunflower oil refining process technology is degumming, which is to remove the peptized impurities in the sunflower oil. Peptized impurities will affect the stability of sunflower oil and the subsequent effect of refining. Henan Glory Company generally uses hydration degumming to remove peptized impurities. The specific operation process is to add hot water to the sunflower oil to make the peptized impurities condense into agglomerates, and then remove the impurities after sedimentation and separation.

2. Deacidification

This step of sunflower oil refining process technology involves the removal of free fatty acids from sunflower seed oil through alkali refining or physical deacidification methods. Free fatty acids will cause sunflower oil to become rancid and affect the quality of sunflower oil, so they need to be removed. There are generally two ways to remove free fatty acids: chemical deacidification and physical deacidification. The operation process of chemical deacidification is to add alkali solution to the sunflower oil to neutralize it with free fatty acids, thereby removing free fatty acids. After chemical deacidification, a by-product soap stock will be produced, which is also the raw material for processing soap.

Sunflower oil refinery plant

3. Decolorization

The function of bleaching in sunflower oil refining is to remove the pigment in the sunflower oil so that the color of the sunflower oil meets the national standards. The specific operation process of bleaching is to add white clay to the sunflower oil, and use the adsorption of white clay to remove the pigment in the oil. At the same time, it can also absorb the residual colloid and soap stock from the degumming and deacidification. After bleaching, the waste white clay in the oil needs to be filtered out by a leaf filter.

4. Deodorization

The function of deodorization is to remove the odor from sunflower oil. The presence of odor will affect the edible value of sunflower oil. The specific operation process of deodorization is to pass water vapor into the raw sunflower oil and remove the odor substances by using the difference in volatility between oil and odor substances. After deodorization, the smoke point, flavor and stability of sunflower oil will be changed.

Dewaxing process 3d picture

5. Dewaxing

This last step of sunflower oil refining process technology is to remove the wax in sunflower oil, which prevents the oil from crystallizing and solidifying at low temperatures, preserving the desired flavor and texture of the oil. Dewaxing is to remove the wax in sunflower oil through crystallization filtration. Dewaxed sunflower oil has high quality and high market value.

Henan Glory Company relies on advanced sunflower oil refining process technologies to provide customers with high-quality sunflower oil products. We have advanced refining equipment and a technical team, and are committed to improving the quality and production efficiency of oil products through continuous innovation, and providing customers with more competitive products in the market.