The main purpose of soybean oil refinery is:
1)Remove harmful impurities and useless impurities in squeezed crude soybean oil or extracted crude soybean oil, and achieve higher edible oil quality standards.
2)Remove excess water in oils, extend the life of soybean oil.
3)Improve the flavor and taste of edible soybean oil .
So how to achieve the goal of edible oil refining, usually we need to go through 4 main refining steps? Next, I will introduce to you the purpose of each step of soybean crude oil refining process in turn.
Soybean oil refining machine
Step1. Degumming
In this step, we add hot water to dissolve colloidal impurities in crude peanut oil to remove excess phospholipids and obtain purer soybean oil;
Step2. Deacidification
Due to the crude oil after degumming still contains excessive free fatty acids， so we need to add alkali to deacidify, let out the soap stock after settling and obtain acid-base neutralized refined soybean oil and make the color more vivid ;
Step3. Decolorization
Then, we add white clay as an adsorbent to remove pigment in the crude oil and filter with a leaf filter after full reaction to improve the color of the oil and to obtain refined bleached soybean oil.
Step4. Deodorization
Finally, the odor and part of free fatty acid and excessive water in crude soybean oil were removed by distillation to improve the quality and the flavor of the soybean oil further and obtain edible oil. After this series of processing, we will finally get edible soybean oil.
Now maybe you have a general understanding about the soybean oil refining steps and their purpose. If you have questions in soybean oil refining process, welcome to contact us. Henan Glory Oils & Fats Engineering Co., Ltd will serve you wholeheartedly.
