In edible oil refining industry, the uses of phosphoric acid is to remove the gums from crude oil, which is a often used degumming method. And the degumming method by adding phosphoric acid has better effect than using water. Even it can remove nonhydratable substance, so more suitable for high-level edible oil refining process.
Why does crude oil need degumming?
Crude oil belongs to colloidal system. Because phospholipid, protein, mucilaginous form a sol system with triglyceride, they are called the colloidal impurities in crude oil. The impurities in crude oil not only affect the stability of crude oil, but also affect the technological effect of edible oil refining and deep processing.
The impurities in crude oil
For example, in the process of alkali refining of crude oil, they will promote emulsification, increase the difficulty of operation, increase the consumption of refining and auxiliary agent, and reduce the quality of soap foot. In the process of decolorization, they will increase the consumption of adsorbent and reduce the decolorization effect. What's more, the oil without degumming cannot be refined by physical refining method and deodorization process, nor can it be further processed.
Therefore, it is necessary to firstly remove the colloidal impurities in crude oil refining process.
The feature of adding phosphoric acid degumming method:
1. This method generally proceed with alkali deacidification method together. After adding phosphoric acid, stir the oil for about 30 min, and then add alkali liquid to proceed the neutralization reaction.
The degumming process by adding phosphoric acid
2. In full-continuous edible oil refining process, the amount of phosphoric acid is controlled by metering pump strictly. After adding the phosphoric acid, the crude oil and phosphoric acid will be mixed in the mixer for a while, and then which are pumped into decolorization section.
The degumming process in continuous edible oil refining plant
This is the introduction about the uses of phosphoric acid. If you still have question, welcome to inquiry. Henan Doing Company is the professional edible oil refinery machine manufacturer in China. If you want to build an edible oil refinery plant, welcome to contact us! Our sales manager will reply you in 24 hours.