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NEWS
Practical Value And Extraction Method Of Castor Oil
Time:Tue-03-23 hits:
Castor is native to eastern Africa, and has been introduced to Asia, America and Europe and other regions, there are about 40 countries are planting castor, planting area can reach 1.1 million mu.
Castor is an annual, tall herb in temperate regions, and a shrub or tree in tropical and subtropical regions, with a longer growth cycle.
Castor seeds can contain 45 to 54 percent oil, and castor beans also contain a variety of rich proteins.
The protein content of the pressed castor cake is generally 33%~35%, and the crude protein content of the dehulled and defatted cake is up to 69%, which is a good source of protein and can be used as fertilizer.
Castor oil is a kind of light yellow, viscous, non-volatile industrial oil, the main component is castor oil, the content of castor oil accounts for about 80%~88% of the weight of castor oil, the high content of castor oil makes the viscosity of castor oil, maintain fluidity at -14℃, at 500~600℃ no deterioration, no combustion, can occur addition, oxidation, esterification, amidation and other chemical reactions.
Castor oil also contains a small amount of linoleic acid, oleic acid, stearic acid, palmitic acid, is an extremely important chemical raw material, widely used in chemical, medicine, aviation, navigation, food, electronics and machinery manufacturing and other fields.
However, considering that castor seeds contain a variety of toxins, toxic detoxification is difficult, resulting in castor meal can not be used in feed or food processing, can only be used as fertilizer, low added value.
Therefore, the oil plant constantly improves the production technology of castor oil, increases the added value of castor meal, and improves the comprehensive economic benefits of castor seed processing.
At present, the extraction of castor seed oil adopts solvent extraction method, which can use light gasoline such as No. 6 solvent as extraction solvent.
The residual oil in the cake can be controlled within 1% by leaching method.
Extraction of castor oil by leaching method has low cost and easy operation, which reduces the production difficulty of oil plant.
In addition, the mixed oil obtained by leaching can be recovered by evaporation, stripping and other processes to achieve economic production.
Castor seed hair oil can be refined to separate impurities and harmful substances in the oil to get high practical value of castor seed oil.