One Time Rice Bran Extraction and Oil Refining Process

Low oil content of rice bran as a special fuel, it is suitable for extraction of crude bran oil. Rice bran extraction undergoes a pretreatment and rice bran extract two stages. Rice bran pretreatment contains three kinds of steamed fried, granulation and expansion. Both dry and wet expansions are selectable for users to make further process of rice bran oil solvent extraction.

Rice bran oil extraction process has a bit different extraction method from other bulk oils, which pays more attention to rice bran raw material extraction, wet meal desolventizing. Crude rice bran oil after solvent extraction has got high acid value, the use of physical refining process has obvious advantages in increasing the rate of oil refining and economic aspects. Physical rice bran oil refining comprises degumming, bleaching, deacidification, dewaxing, degreasing, the key step is a distillation deacidification. Degumming and bleaching vital to its pretreatment step. Rice bran oil physical refining process applications in the actual production level of product quality according to the requirements of raw wool bran oil and refined rice bran oil situation, combined with a comprehensive chemical refining process or production of refined oil products of various grades of regulation, made the best use of benefits.

Rice bran is a by-product of rice processing, has a high utility value. Crude rice bran oil is available with the help of solvent extraction process. Edible rice bran oil after rice bran oil refining process can make fully removal of all kinds of impurities. Rice bran has quite low oil content of 14% to 24%, it is very suitable for crude oil extraction with the addition of solvent. Since rice bran contains lipase, usually the acid value of crude rice bran oil is among 10 ~ 30mgKOH/g. However, the acid value of extracted rice bran oil from moldy rice bran or rancidity rice bran can reach as high as 40 ~ 100mgKOH/g. In order to make full control of high acid of rice bran oil, physical oil refining process is highly recommend in order to get high quality rice bran oil.
During one time rice bran oil extraction, rice bran should be processed through steam flaking, granulation and expansion. According to the special nature of the material rice bran, rice bran  oil process plant needs to be adjusted according to wet meal desolventizing technology and equipment.
Since crude rice bran oil is a high acid crude oil, traditional chemical oil refining method has comparatively weak points of improving fine rice bran oil refining rate and economic aspects. However, physical oil refining machine process can make perfect treatment of the problem of high acid value. Physical rice bran oil refining process has superior highlight in processing high acid value crude rice bran oil.
With the gradually mature rice bran oil processing technology and wide spread planting of rice, rice bran oil as a healthy oil is more and more accepted by consumers. One time rice bran solvent extraction and rice bran oil refining technology can also get wide prospect all over the world.