Rice bran oil, also known as rice oil, rice bran through solvent extraction process to get edible oil. This process is the more common way to extract rice bran oil, the process can be roughly divided into four steps, the pretreatment of rice bran, rice bran oil solvent extraction, rice bran crude oil refining and refining dewaxing treatment.
Pretreatment of rice bran: rice bran without pretreatment will contain stones, soil, debris and other impurities, we need to remove these impurities to get pure rice bran. According to the actual situation, we may use cyclone separator, cleaning sieve, destone and so on. The crushing degree, moisture, temperature and acid-base value of rice bran have great influence on the extraction rate of rice bran oil, so the cleaned rice bran needs to be steam-fried to regulate the temperature and moisture, and after that it is sent to the puffing machine to make it become porous and fluffy structure to reach the state which is more beneficial for the oil to be extracted.
Rice bran oil solvent extraction: after expanding rice bran is fluffy and soft, moist and with hot air at this time sends into the solvent extraction tank and the solvent (hexane) carries on the full fusion, the oil and the solvent carries on the displacement reaction. This way has the advantages of high oil yield, high economic efficiency and good quality of meal. The process of solvent oil extraction has high production efficiency and high degree of mechanization, which is more suitable for large-scale oil production. Because rice bran is special, processing it needs larger investment, for your input capital and return capital consideration, we suggest that the minimum processing capacity of the project is up to 30 tons/day.
Rice bran oil refining: rice bran oil contains various impurities, such as suspended impurities, gums, free fatty acids, etc., so it needs to be processed by oil refining equipment, generally there are six main processes, such as degumming, deacidification, dehydration, decolorization, deodorization, dewaxing and so on.
Rice bran oil is different from other oils, it has more wax, so it needs to add dewaxing process at the end of refining process, after refining and dewaxing, the rice bran oil is finished rice bran oil, it can enter into the filling workshop to carry on a series of follow-up work such as filling, packing, spraying code, selling and so on after passing the laboratory test.
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