The leaching and refining process is a crucial technology for producing high - quality sesame oil. It involves equipment such as leaching vessels, evaporators, desolvation towers, and refining equipment. By using organic solvents to soak sesame seeds at high temperatures, the oil is extracted. Subsequently, the six - degreasing processes effectively improve the purity and stability of the oil.
The leaching vessel is the starting point of the process. It is designed to immerse sesame seeds in an organic solvent. Research shows that with a proper solvent - to - sesame ratio of about 3:1, the oil extraction efficiency can reach up to 90%. The evaporator then separates the solvent from the oil - solvent mixture. The desolvation tower further removes any remaining solvent, ensuring the oil meets food - grade standards. Refining equipment is used for the subsequent degreasing, de - gumming, dehydration, decolorization, deodorization, and deacidification processes.
| Process Step | Function | Optimized Parameters |
|---|---|---|
| Degreasing | Remove excess fat impurities | Temperature: 40 - 50°C, Time: 30 - 45 minutes |
| De - gumming | Eliminate phospholipids and other gums | Add 0.1 - 0.3% phosphoric acid, Temperature: 60 - 70°C |
| Dehydration | Reduce moisture content | Vacuum degree: 0.08 - 0.09 MPa, Temperature: 80 - 90°C |
| Decolorization | Remove pigments | Add 2 - 3% activated carbon, Temperature: 90 - 100°C, Time: 20 - 30 minutes |
| Deodorization | Eliminate unpleasant odors | Temperature: 180 - 200°C, Steam flow rate: 2 - 3 kg/h |
| Deacidification | Reduce acid value | Add 0.5 - 1% sodium hydroxide solution, Temperature: 60 - 70°C |
Solvent recovery is an important part of the process, not only for cost - saving but also for environmental protection. By using advanced distillation and condensation techniques, over 95% of the solvent can be recovered. Moreover, energy - saving measures such as heat exchangers are employed to reduce energy consumption by up to 30% during the process.
Let's take a sesame oil production factory as an example. After implementing the optimized leaching and refining process, their production capacity increased by 20%, and the oil quality improved significantly, meeting international standards. Here are some frequently asked questions:
If you are looking to enhance your sesame oil production in terms of both quantity and quality, our state - of - the - art leaching and refining equipment is your ideal choice. It is designed with the latest technology and optimized processes to help you achieve economic and ecological benefits. Click here to learn more about our equipment and start your journey to producing excellent sesame oil!
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