Circulation of liquid absorbent in waste gas treatment system

By the end of the Year of the Snake in 2025, Anhui Shengshi Datang Chemical Equipment Group Co., Ltd. will take the lead in sales and provide professional knowledge analysis from the technical department to reach a long-term cooperation with a group enterprise in Hunan to carry out projects.

The enterprise mainly produces organic chemicals, and a large amount of volatile organic compounds (VOCs) will be produced in the production process. In order to effectively treat these exhaust gases, the enterprise has adopted a waste gas treatment system mainly based on liquid absorption method. In this system, a centrifugal pump made of stainless steel material is selected as the circulating pump of liquid absorbent. The centrifugal pump made of stainless steel material has excellent corrosion resistance. Its large flow characteristics meet the needs of large-scale waste gas treatment for the amount of absorbent circulation. In actual operation, the chemical pump can stably extract the absorbent from the collecting tank at the bottom of the spray tower and transport it to the spray device at the top of the tower, ensuring the circulation speed of the absorbent and the spray effect. After the operation of the waste gas treatment system, the concentration of exhaust gas emission from the enterprise has been greatly reduced, reaching the relevant national environmental protection standards. It not only reduces environmental pollution, but also avoids the risk of high fines and production suspension due to excessive exhaust gas emission.

The components, corrosiveness, and temperature of the waste gas are important factors to consider when selecting a chemical pump.

If the exhaust gas temperature is high, it will lead to the corresponding increase of the liquid absorbent temperature, which poses a challenge to the high temperature resistance of the pump material. In the treatment of exhaust gas generated by some high-temperature calcination processes, the temperature of the absorbent may be as high as 100℃ or more. At this time, the stainless steel pump of metal material can work normally in this high-temperature environment and ensure the circulating transportation of absorbent due to its good high-temperature resistance performance. However, the engineering plastic pump has limited high-temperature resistance, and it may have problems such as deformation and aging in this high-temperature condition, which will affect the normal operation and service life of the pump.

In the actual selection process, you can also refer to the performance curve of the chemical pump. The performance curve can intuitively show the changes of head, power and other parameters of the pump under different flow rates. By marking the actual required flow rate and head parameters on the performance curve, it is possible to select the appropriate model of chemical pump more accurately, ensuring that the pump operates under efficient and stable working conditions.