In the fine chemical industry, extraction tower is widely used in the production process of various products because of its efficient mass transfer performance and good operating flexibility. The following is a specific case to analyze the application of extraction tower in fine chemical industry.

A fine chemical enterprise produces a kind of high performance organic intermediate. In the synthesis process of the intermediate, the mixture after reaction needs to be separated and purified. The traditional separation method is not effective, resulting in low purity of the product and low yield.

To solve this problem, the company introduced extraction towers. In the application of the extraction column, the mixture after reaction is first pretreated to remove the solid impurities and insoluble substances.

Then, according to the properties of each component in the mixture, a suitable extractant is selected. The extractant and the pre-treated mixture enter the column from the top and bottom of the extraction column, respectively.

In the extraction tower, the extractant and the mixture are fully in contact through the packing layer in the tower, and the target organic intermediate is transferred from the mixture to the extractant phase. Due to the huge mass transfer area provided by the packing layer, the mass transfer process is fast and efficient.

As the two-phase liquid flows through the tower, stratification is gradually achieved. The extractant phase containing the target organic intermediates is discharged from the top of the tower and enters the subsequent back extraction and refining process. The raffinate phase is discharged from the bottom of the tower for further treatment or recycling.

Through the use of extraction towers, the purity of the company's products increased from the original 80 percent to more than 98 percent, and the yield increased from 60 percent to about 80 percent. At the same time, the continuous production capacity of the extraction tower meets the needs of large-scale production, improves the production efficiency and reduces the production cost.

In this case, the advantages of the extraction tower were fully demonstrated. Its efficient mass transfer performance enables the target organic intermediates to be quickly and effectively separated from the mixture, improving product quality and yield.

Good operating flexibility also enables the extraction column to adapt to fluctuations in the composition of the reaction mixture, ensuring the stability of the production process.

Extraction tower has important application value in fine chemical production, which can provide strong support for enterprises to improve product quality, reduce production costs and improve production efficiency. With the continuous development of fine chemical industry, the application prospect of extraction tower will be broader.