After squeezing the oil or extraction process with an oil solvent, we get raw edible oil. However, raw edible oil cannot be eaten and sold on the market. Unrefined edible oil must be processed at an edible oil refinery. An edible oil processing plant can remove raw edible oil components that can adversely affect taste, stability, appearance or nutritional value. Whenever possible, treatment should preserve tocopherols and prevent chemical changes in triaciglycerols.
Crude edible oil obtained from Oil Expeller or an oil solvent extraction machine contains impurities such as mucus, gums, colored and unfiltered protein substances from seeds. Also free fatty acids (F.F.A.), which tend to spoil the oil during storage, making it unsuitable for plant use.
The edible oil processing plant developed by Henan DoIng Company Machinery has the following features:
Our edible oil processing plant makes the oil pure, edible, tastier and more resistant to rancidity during storage. Our converters are equipped with coils for efficient heating of the oil and mixers inside it. The whitening section consists of a high quality vacuum bleach that removes all impurities. And the well-designed continuous continuous multi-stage deodorizer with drip tray has a robust design that provides excellent cleaning results.
The technological scheme of edible oil processing at the refinery:
The edible oil processing process consists of the following section
1. The neutralizing section
The first stage of the edible oil processing plant is to remove free fatty acids (F.F.A.) using a caustic soda treatment called the neutralization process, which is then further processed in the bleaching section under vacuum and treated with bleaching earth and activated carbon to remove color. Finally, it will be deodorized under high vacuum and high temperature to remove the smell of oil.
2. Whitening section
The oil obtained in the previous stages contains traces of soap, iron and several parts per million phospholipids and carotenes. This content is undesirable and must be removed during the bleaching process, the Henan Doing Company steam bleach includes acid treatment, a separate device for mixing oil and earth with a mechanical mixer (this device does not allow the bleaching earth to be transferred to a vacuum system), the main bleaching vessel and sealed filters.
3. Deodorizing section.
The physical refining process is used to remove FFA (free fatty acid) in an edible oil processing plant using the steam distillation method at high temperature and high vacuum, followed by deodorization and an additional technical means for removing free fatty oil is added before deodorization. acid.
The deodorization process is used to eliminate an unacceptable odor by steam distillation, and the aromatic compounds are removed using live injected steam into the heated oil in a high vacuum.