The main reason is that the cost of soybean oil produced by pressing is high, and the loss during soybean oil pressing is large. The residual oil rate of soybean oil produced by pressing is about 6%~8%, while the soybean oil extraction machine can well control the residual oil rate within 1%. However, the investment in the soybean oil extraction production line is high and the degree of automation is strong, so it is suitable for large and medium-sized edible oil factories.

The soybean oil extraction plant process has the advantages of large output, high efficiency, high oil yield, good meal quality and low production cost.

1. The soybean oil extraction machine has a high oil yield

When edible oil manufacturers use the pressing method to make oil, the pretreatment process can destroy the oil cells, the pressing chamber temperature is very high, and the pressing chamber pressure is also high. Therefore, it is impossible to squeeze out the oil by pressing, and the residual oil rate of the pressed cake is still relatively high. The oil content of soybeans is low, so the oil yield of soybean oil produced by pressing is not high. In contrast, the oil extraction method is used to produce soybean oil. Since the oil content of soybeans is not high, the direct extraction process can control the residual oil rate of the meal after extraction to less than 1%, which greatly improves the oil yield of the soybean oil plant.

2. The quality of soybean meal after extraction is good

During the soybean oil extraction process, since the operating temperature of the extraction-related processes is relatively low, the degree of denaturation of the protein in soybeans is smaller, and the quality of soybean meal is correspondingly better, which is very beneficial for extracting soybean protein or using it as animal feed.

3. The soybean oil extraction machine has a high degree of automation

The soybean oil extraction production line has a high degree of mechanization, is easy to operate and realize automation, reduces the labor intensity and labor cost of the workshop, and the solvent required for extraction and oil production can be recycled and reused through subsequent evaporation and condensation, and the energy consumption is correspondingly lower. Therefore, the cost of soybean oil production by extraction is relatively low.

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