Complete Process Flow of Rice Bran Oil Extraction

The production of rice bran oil involves several key steps, including pre - treatment, solvent extraction, refining, and the use of auxiliary equipment. Each step plays a crucial role in ensuring the efficiency and quality of the final product.

Pre - treatment Equipment

Pre - treatment is the first and essential step in rice bran oil extraction. It aims to prepare the rice bran for subsequent solvent extraction. There are several important pre - treatment equipment:

• Grain and Bran Separator: This equipment is used to separate impurities and foreign matter from the rice bran. For example, in a medium - sized rice bran oil processing plant in Thailand, by using a high - efficiency grain and bran separator, the purity of the rice bran increased from 90% to 95%, which significantly improved the quality of the final oil product.
• Conditioning Pot: It adjusts the moisture and temperature of the rice bran to an optimal state for the next process. The proper moisture content is usually around 10% - 12%. A good conditioning pot can ensure uniform heating and moisture adjustment, which is beneficial for subsequent processing.
• Extruder: The extruder can change the physical structure of the rice bran, increasing its permeability. In a large - scale rice bran oil production line in India, after using an extruder, the extraction efficiency increased by about 15%.
• Counter - flow Dryer: This dryer can effectively remove excess moisture from the rice bran. It uses counter - flow technology to ensure efficient heat exchange and uniform drying. A well - designed counter - flow dryer can reduce the moisture content of rice bran to about 6% - 8%.

Solvent Extraction Equipment

Solvent extraction is a key process for obtaining rice bran oil from pre - treated rice bran. The main equipment includes:

• Extractor: The extractor uses a solvent to dissolve the oil in the rice bran. Different types of extractors, such as continuous and batch extractors, have different working principles and application scenarios. Continuous extractors are more suitable for large - scale production, with an extraction efficiency that can reach up to 98%.
• Evaporation Tower: It is used to separate the solvent from the mixed oil. The evaporation tower can recover the solvent for reuse, which is in line with the principle of energy conservation. In a modern rice bran oil plant in the United States, the solvent recovery rate of the evaporation tower reached 95%.
• Mixed Oil Evaporation System: This system further evaporates the solvent in the mixed oil to obtain crude rice bran oil. It can operate under different pressure and temperature conditions to ensure efficient evaporation.
• Condensation and Recovery System: This system recovers the evaporated solvent by condensation. The recovered solvent can be reused in the extraction process, reducing production costs.

Refining and Auxiliary Equipment

After solvent extraction, the crude rice bran oil needs to be refined to improve its quality. Refining equipment includes degumming, deacidification, decolorization, and deodorization equipment. Auxiliary equipment, such as pumps, filters, and storage tanks, also plays an important role in the entire production process.

Equipment Maintenance and Optimization

With the trends of energy conservation, environmental protection, and intelligentization in the industry, regular equipment maintenance and optimization are crucial. For example, regular cleaning of the extractor can prevent blockage and improve extraction efficiency. Upgrading the control system of the dryer to an intelligent system can achieve more accurate temperature and moisture control.

Our equipment features high - efficiency production performance and energy - saving intelligent advantages. It can help you achieve cost control and quality improvement in rice bran oil production. If you want to learn more about how to select the most suitable rice bran oil extraction equipment for your enterprise, click here to get professional advice.

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