Because of high wax content, sunflower oil refinery plant has one more process than other vegetable oil refinery plant. So except for degumming, deacidification, decolorization, deodorization, sunflower oil dewaxing process should be added after deodorization process in sunflower oil refining process.
Main process of the sunflower oil refinery plant:
Crude sunflower oil → degumming & dephosphorization → deacidification → drying → decolorization → deodorization → defatting → dewaxing → finished sunflower oil.
1. Crude sunflower oil degumming:
In this step gums in crude sunflower oil are removed by hydration with the help of phosphoric acid.
2. Deacidification (neutralization):
In this step free fatty acids are neutralized by using sodium hydroxide and convert them into soap. Additional impurities are also removed by adsorption on soap.
3. Decolorization:
During de-colorization, unwanted pigments are adsorbed physically and oil will become much clearer.
4. Deodorization:
Deodorization is used to remove unacceptable odors by steam distillation, the odoriferous compound are stripped off with the help of live injected steam into heated oil under high vacuum pressure.
5. Dewaxing (necessary for sunflower oil):
Sunflower oil dewaxing machine reduce wax content in sunflower oil, which help increase edibility of sunflower oil.
The Main machine for sunflower oil refinery plant:
1. Neutralization pot: For acid refining, alkali refining and water washing.
2. Decolorization pot: Bleach oil and remove pigment from oil.
3. Deodorization pot: Remove odor from oil (Made of stainless steel).
4. Heat conduction oil furnace: Provide heat energy for production, the temperature can reach 280°C.
5. Vacuum pump: Provide vacuum degree for decolorization and deodorization,up to above 755mgHg.
6. Air compressor: Dry decolorization bleaching clay.
7. Filter press: Filter bleaching clay.
8. Steam generator: Provide steam for deodorization & distillation
Sunflower oil refining plant features:
1. Capacity: 10-1000T/D
2. Bleaching clay quantitative system
3. Freezing filtration system
4. Fatty acid recovery system
5. Heat supply system (heat conduction oil boiler)
6. Vacuum system