Fans are crucial equipment in petrochemical production, mainly used for gas transportation, ventilation, boosting process gases, and waste gas treatment. In scenarios such as oil refining, chemical plants, and natural gas processing, fans provide combustion-supporting air for the combustion system, promote gas circulation in reaction vessels, or are used for ventilation in cooling towers and waste gas recovery, etc. For instance, centrifugal fans are commonly used for air supply in catalytic cracking units, while rotary vane fans are suitable for high-pressure gas transportation. Due to the challenges of high temperatures and corrosive gases in the petrochemical environment, fans need to adopt corrosion-resistant, explosion-proof materials and special sealing designs to ensure safe and stable operation. Efficient and energy-saving fan technologies can also help petrochemical enterprises reduce energy consumption and meet environmental protection requirements, and are important equipment for ensuring continuous production and optimizing processes.