How to refine sunflower oil into product oil by standard refining process?

There are different nation standards of product oil in different countries. In China, the nation standards of product oil has four grade, and the best sunflower oil should reach Grade 1 nation standard. If you want to get Grade 1 sunflower oil, standard sunflower oil refining process is necessary, which contains five sections: degumming, deacidification, decolorization, deodorization and dewaxing.

Sunflower oil refinery process flow chart

Dewaxing is a special section in sunflower oil refining process, which is different from other crude oil refining process. Because the wax content of sunflower oil is high, dewaxing process becomes a necessary section in the whole line. Next, I will introduce each step one by one.

1. Degumming of sunflower oil

In this step gums in crude sunflower oil are removed by hydration with the help of phosphoric acid.

The degumming and deacidification process of sunflower oil

2. Deacidification (neutralization) of sunflower oil

In deacidification process, it is using sodium hydroxide to neutralize with free fatty acids, and convert them into soap. At the same time, the impurities are also removed by adsorption on soap.

3. Decolorization of sunflower oil

During the decolorization of sunflower oil, some pigments will be adsorbed using white clay, and the color of oil will become much lighter.

Decolorization process of sunflower oil

4. Deodorization of sunflower oil

The deodorization process is using steam distillation technology to remove unacceptable odors. With the help of live injected steam into heated oil under high vacuum pressure, the odoriferous compound are stripped off.

5. Dewaxing of sunflower oil

The dewaxing process of sunflower oil is necessary for refining sunflower oil. Through heating, crystallization, cooling and filtration, it removes the wax from sunflower oil, which help increase edibility of sunflower oil. [Related reading: Why does sunflower oil need dewaxing?]

If you want to start the sunflower oil refinery business, please find the professional engineers to design the sunflower oil standard refining process for you. Henan Doing Company is one of your best choices. Welcome you to write down your requirement!