What are the advantages and disadvantages of solvent extraction method?

The solvent extraction method is to use the miscibility of chemical solvent oil to extract the oil in the raw material. If the processing capacity is relatively large, the solvent extraction method is recommended. Solvent extraction has many advantages, such as high oil yield, high extraction efficiency, wide application range, and high profit, but the disadvantages of high cost and environmental impact are also aspects that need to be considered when using solvent extraction method.

Cooking oil solvent extraction machine

Advantages of solvent extraction method

1. High oil yield: The solvent extraction method sprays n-hexane solvent on the oil cake through the nozzle, the solvent and the oil cake in the extractor are fully mixed, and then the solvent and oil are separated under high temperature and negative pressure, and sometimes it can be processed twice solvent extraction, greatly improving the oil yield, the oil yield can be as high as 99%.

2. High extraction efficiency: The solvent extraction method can efficiently extract target components in edible oil, such as fatty acids, vitamins, etc., and remove compounds that are not easily soluble in other solvents, and the extraction efficiency is high.

3. Wide range of application: solvent extraction method is suitable for various types of edible oils, such as: soybean oil, peanut oil, rice bran oil, etc.

Soybean oil solvent extraction prodution line

4. High profit: Compared with other extraction methods, solvent extraction method is suitable for large-scale production. Firstly, from the aspect of solvent recycling and reuse, it saves the cost for the factory; secondly, from the aspect of plant construction, a variety of edible oils can be extracted with one investment, and large-scale production can bring more profits. (Recommend reading: Soybean oil processing plant)

Disadvantages of solvent extraction

1. High cost: The process of solvent extraction is relatively complicated, which requires professional equipment and technology, which increases the production cost. In addition, solvent extraction method has higher requirements for the production environment. Solvent extraction factories must be built in accordance with the requirements of Class A explosion-proof workshops. The investment cost is higher than the pressed method.

Pressing machine and solvent extraction machine

2. Impact on the environment: Solvent extraction method requires a large amount of solvents, which may pollute the environment if not handled properly or recovered incompletely.

If your budget is sufficient and the processing capacity is 20-600tpd, solvent extraction method is still a good choice for you. As a professional manufacturer of edible oil production equipment, Henan Glory Company welcomes you to consult.