Refining processes:
A.Preheating secticon:
Pumping crude oil into hydrate tank (oil refining tank), on one hand, quickly stirring , on the other hand, heating by steam or heat transfer oil (in coil pipe), rise oil temperature.
B.Degumming section:
This is the most important section of hydrate de-gumming,manage the adding water (there is a little P-acid in the water) amount, temperature and add water speed.
C.Deacidification section:
This part adopt alkali refining method, that is use alkalis like (NaOH) to neutral the free fatty acid in oil, during this process it will produce soapstock , then separated from the oil by setting several hours. NAOH solution, not only neutral free fatty acid, also can act with other matters like protein, mucus,
phospholipid, pigment.
D.Decolorization Section:
In normal situation , there is pigment in the crude oil , we need to using the active clay to absorb the pigment away ,we use the vibrating filter to filter the waste clay away . If you want to get light color oil , you need to add more active clay . That is mean , the customer can accord to his requirement to control the oil color.
E.Deodorization and Dehydration Section:
Usually ,there are some odors in the crude oil , it affects the quality of the edible oil . About our refining process , we usually use the direct steam to take odors away in the vacuum condition . In the deodorization pot , the temperature is very high , it also can finish the dehydration section.
F. Filtering:
This process can remove off the small amount of unsettle gum soluble impurities in the degummed oil, after oil dehydrate cooling , filtering again, to ensure the product oil quality. Then pumping the final oil into the oil tank.
G.Dewaxing section:
After refining , there is a final process is required , that is De-waxing. Because there is some wax content in the sunflower oil , you need to remove it , or it will affect the quality of the edible oil .
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