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Rice bran oil equipment, also known as rice bran oil pressing equipment or rice oil equipment, is a specialized machinery used for extracting oil from rice bran.
Rice is a major grain crop in China, and rice bran is a byproduct of rice processing, with an annual output of approximately 10 million tons, making it a widely available oil resource. Rice bran typically accounts for 8% to 12% of the whole brown rice, and the oil content in rice bran ranges from 14% to 24%. Due to its tendency to spoil easily and its unsuitability for long-term storage, rice bran is commonly used as animal feed. Only about 10% of the rice bran is used for oil pressing or further processing into higher-value products like phytic acid calcium, inositol, and oryzanol. With the continuous advancement of science and technology, the stability of rice bran storage has been improved by inactivating the lipase and peroxidase enzymes in rice bran, extending the storage time and making it a better raw material for oil processing.
The extruded rice bran extraction process is similar to that of soybean and cottonseed cake, involving four main systems: material extraction, wet meal desolventing, mixed oil evaporation, and solvent recovery. However, the material characteristics of extruded rice bran also determine the unique aspects of its extraction process.