Rice bran oil refining machine production line
Before introducing the rice bran oil refining machine production line, first introduce the source of rice bran oil extraction. Rice bran is a by-product produced during the processing of rice into rice. Its oil content varies with different rice varieties, usually 16-23%. Rice bran oil not only has excellent cooking and edible properties, but also has unique health care functions, so it is extremely valuable. Rice bran oil, as a heat source and nutritional health product, has attracted widespread attention from many countries in the world. It has the advantages of fragrant smell, high temperature frying resistance, long-term storage and almost no harmful substances, which are incomparable to other edible oils.
The chemical structure of rice bran oil is very unique, which is in line with the recommended standard of human dietary fatty acids. Among its fatty acids, saturated fatty acids account for only 20%, unsaturated fatty acids account for 80%, oleic acid accounts for 38% of unsaturated acids, and linoleic acid accounts for 40%. %, it is a typical oleic acid - linoleic acid type oil. Linoleic acid can reduce the excessive deposition of cholesterol on the blood vessel wall and prevent atherosclerosis. At the same time, rice bran oil contains dozens of natural physiological substances such as vitamin E, squalene, active fatty acid enzyme, oryzanol, and phytosterol Active ingredients have a great effect on regulating human body functions and improving metabolic functions. Rice bran oil has superior performance and is widely used. It is a new type of functional health edible oil.
The production process of rice bran oil extraction machine
(1) Rice bran oil production process:
Raw material rice bran→feeding→lifting and conveying→cleaning→expanding or granulating→lifting and conveying→leaching→separation of mixed oil→crude rice bran oil
(2) Rice Bran Oil Refining Process Bran Oil Chemical Refining Process
Crude rice bran oil → degumming → alkali refining → decolorization → deodorization → dewaxing → degreasing → refined rice bran oil products. It can also be designed for pre-dewaxing. It is to put the dewaxing section in front of decolorization, or in front of deodorization.
Process flow of physical refining of rice bran oil
The acid value of rice bran crude oil is usually very high, generally 10 to 25 acid value, the highest one reaches 30 to 40 acid value, the ordinary chemical refining method has been difficult to meet the economic requirements of processing. Using the rice bran oil physical refining process, the processing loss is small, the yield of refined oil is high, and the by-product of mixed fatty acids can be directly obtained.
The physical refining method of rice bran oil is steam distillation. That is, the rice bran oil is under the condition of high vacuum and high temperature, and the FFA in the oil is taken out by spraying clean water vapor into the oil.
Process characteristics of physical refining method
(1) Since the oil deacidification treatment is a processing operation under high temperature conditions, before the crude oil enters the distillation process, it must be pretreated strictly to remove most of the impurities other than free fatty acids in the oil and pigments.
(3) Distillation and deacidification operation is semi-continuous production, and continuous production can also be selected. All pretreatment operations before distillation and deacidification can be selected as batch production, or continuous production process.
(4) Deacidification and oil deodorization are designed to couple the production process, and the operation is carried out, which simplifies the process equipment and operation, reduces the consumption of auxiliary materials, reduces the formation of trans fatty acids, and improves the oil yield.
(4) Rice bran oil products can meet the first-grade oil standard of China's national standard.
(5) The neutral oil yield increased by more than 3.8% compared with the alkali refining deacidification method. The refining consumption ratio of physical refining is about 0.81, the distillation deacidification process parameters are pressure 150~550 Pa, temperature 240~270 ℃;
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