What is the requirement for the pressure dew point of compressed air for the activation of fluorine chemical polymerization catalysts?

In the activation process of fluorine chemical polymerization catalyst, the pressure dew point of compressed air (that is, the temperature at which the compressed air starts to condense into liquid water at a specific pressure) needs to be strictly controlled to ensure the activity of the catalyst and the efficiency of the polymerization reaction. Specific requirements and granklin air compressor adaptability analysis are as follows:

1. Core requirements for pressure dew point

the activation process of fluorine chemical polymerization catalysts (such as perfluorosulfonic acid resin, aluminum fluoride, etc.) is extremely sensitive to environmental humidity. If the compressed air contains moisture, it will condense on the surface of the catalyst, causing the following problems:

• the activity of the catalyst decreases, which affects the polymerization rate and the molecular weight of the product;
• water and catalyst or monomer side reaction, produce impurities, reduce product purity;
• long-term moisture may cause damage to the catalyst structure and shorten the service life.

Therefore, the pressure dew point of the compressed air for activation needs to be below -40 ℃(Some high-precision processes may require -60°C or lower) to ensure that the moisture content in the air is extremely low (the lower the corresponding dew point temperature, the lower the moisture content) to meet the stringent requirements of the catalyst for a dry environment.

2. Adaptation Advantage of Granklin Air Compressor

granklin water lubricated single screw air compressor can stably provide low pressure dew point compressed air that meets the requirements of fluorine chemical industry through the following design:

• oil-free pollution guarantee: Water as the medium to achieve sealing and lubrication, completely eliminate the lubricating oil mixed with compressed air, to avoid the risk of oil pollution to the catalyst, while the water lubrication structure reduces the traditional oil system may introduce additional moisture.
• Structural optimization to reduce the original humidity: The direct matching design of the single screw and the star wheel, combined with the high-efficiency compression runner, reduces the secondary condensation of moisture during the compression process, and the output original compressed air has low humidity.
• Compatible post-processing equipment: It can be used with refrigeration dryer, adsorption dryer and other equipment to further reduce the pressure dew point to below -40 ℃, accurately matching the drying requirements of fluorine chemical catalyst activation.

3. Operation Suggestions and Precautions

• front end control: The installation position of the air compressor should avoid high temperature and high humidity environment and reduce the moisture content of the intake air;
• rear end drying: According to the actual pressure dew point requirements, select the appropriate drying equipment (such as adsorption dryer is more suitable for ultra-low dew point requirements);
• regular inspection: Regularly monitor the compressed air pressure dew point through a dew point meter to ensure compliance with process standards.

Summary

the requirement of the pressure dew point of the compressed air for the activation of the fluorine chemical polymerization catalyst is usually below -40°C to ensure the activity of the catalyst and the quality of the polymerization reaction. Granklin water-lubricated single-screw air compressor can stably provide dry compressed air with low pressure dew point through oil-free design, structural optimization and compatibility with post-processing equipment, so as to meet the strict demand of fluorine chemical industry for air dryness, and help enterprises to realize efficient and stable catalyst activation and polymerization production.