What is sunflower oil?
Sunflower oil is a non-volatile oil that is extracted from sunflowers. Although most people are already familiar with sunflowers as plants, they don’t immediately think of sunflowers as a source of healthy vegetable oil. Sunflower oil can replace some of the less healthy cooking oils on the market. It can also be used in certain cosmetic applications.
The meaning of oil refining:
Oil refining is a step-by-step process. Oil refining removes phospholipids, pigments, odors, free fatty acids and other impurities from crude oil. The entire refining process includes dephosphorization, degumming, deacidification, decolorization and deodorization, and sometimes winterization. (Mainly removing free fatty acid and other minor constituents)
Main equipment of sunflower oil refining process: degumming pot, deacidification pot, bleaching tower, deodorization pot, steam separator, gear pump, water pump, etc.
Sunflower oil refining process flow:
- Sunflower Oil Refinery Process – Degumming
The purpose of degumming is to remove impurities such as phospholipids, gums and proteins etc. There are several methods as follows: water degumming, acid degumming, special degumming etc.
- Sunflower Oil Refinery Process – Neutralizing
The purpose of neutralizing is to remove free fatty acid in oil by using caustic soda while removing impurities such as phospholipid, pigments, metal ions, peroxide etc. by use of soapstock.
- Sunflower Oil Refining Process – Bleaching
High activity clay is added into oil. Mix and heat mixture of oil and clay to make the small particle of pigment absorbed on the crystal of clay.
At last filter the oil. Mechanism, liable performance, well configured equipment.Bleaching Tower and Filters ensures excellent bleaching and separation effect.
- Sunflower Oil Refining Process – Deodorizing
Deodorizing is the final stage in oil refining in order to remove odoriferous material, free fatty acids and other undesired minor components by steam distillation under condition of high temperature and vacuum to produce a bland oil with a good shelf life.
- Sunflower oil refining process – Dewaxing(winterizing)
Through automation system, combined with crystallization curve (time-amount of crystallinity) of different oil, crystals in oil grow and finally can be separated by filtration to obtain dewaxed oil.