In the petrochemical industry, the extraction tower is an indispensable equipment and plays an important role in many production links. First, in the refining process of petroleum distillates, extraction towers can be used to remove impurities, such as sulfur and nitrogen compounds.

Taking diesel refining as an example, the sulfur and nitrogen compounds contained in diesel will pollute the environment, and also affect the combustion performance of diesel. These impurities can be extracted from diesel oil and the quality of diesel oil can be improved by adding suitable extractant to the extraction column.

In the extraction tower, diesel and extractant are fully mixed, sulfur and nitrogen compounds are transferred from the diesel phase to the extractant phase, and then the extractant containing impurities is separated by layering for subsequent treatment. Extraction tower has obvious advantages in petrochemical industry.

First, high mass transfer efficiency. The internal components such as packing or sieve plate in the extraction tower can provide a huge mass transfer area, so that the two-phase liquid is fully in contact, and the extraction process of impurities is accelerated. Compared with other extraction equipment, the extraction tower can achieve a higher extraction rate in a shorter time and reduce the amount of extractant.

Second, it covers a small area. Due to its vertical structure, the extraction tower occupies a much smaller footprint than equipment such as extraction tanks with the same processing capacity. This is of great economic significance to the petrochemical enterprises which are short of land resources.

Third, the operation is flexible. In the process of petrochemical production, the properties and flows of materials may fluctuate greatly. The extraction tower can adapt to these changes within a certain range, and by adjusting the operating parameters, such as flow rate, temperature, extractant dosage, etc., it can still ensure a better extraction effect and ensure the stability of the production process.

In addition, the continuous production capacity of the extraction tower also meets the requirements of large-scale petrochemical production. It can achieve continuous feeding and discharging, improve production efficiency and reduce production costs.

In the petrochemical industry, with its advantages of high mass transfer efficiency, small footprint and large operation flexibility, the extraction tower plays an important role in many production links such as the refining of petroleum distillates, providing a strong guarantee for the improvement of the quality of petrochemical products and the stable operation of production.