Edible oil refining line

Edible Oil Refining
Refining removes impurities from crude oil, such as phospholipids, free fatty acids, pigments, odors, and moisture. It will greatly improve the purity, stability, and safety for edible use. We combine different refining method according to the crude oil type and the product specifications requirements to match the food safety standard.

There are two types of refining: physical refining and chemical refining.

• Physical refining uses vacuum steam distillation to strip free fatty acids. This suits high‑acid oils and offers low chemical consumption, less pollution, and higher yield. Besides, activated charcoal or bleaching clay can absorb pigments in oils, making them appear clearer.

• Chemical refining neutralizes free fatty acids with alkali, then centrifuges separate soapstock and gums. This method adapts to various crude oils and produces consistently stable refined oil.

We tailor each process to the oil type and customer needs, adjusting alkali and water dosages to remove impurities effectively. Our imported centrifuges ensure high separation efficiency and reliable operation.
We have also developed innovative technologies: a low‑temperature, long‑mixing alkali refining process that cuts oil losses and boosts yield, and a vacuum freeze system that saves steam and eliminates odors.