Compressed air purity can generally reach the percentage

The purity of compressed air can usually reach between 99.2 and 99.99 percent, depending on the type of air compressor, subsequent purification measures and the application scenario. The following are the key factors affecting the purity of compressed air and specific instructions:

1. core influencing factors

1. air compressor type
   • model with oil lubrication during the compression process, the lubricating oil may be mixed with air, resulting in low purity (about 99.2-99.5%), which needs to be improved by subsequent purification treatment.
   • Oil-free lubrication model: Using self-lubricating materials or water lubrication technology, the purity of compressed air can reach more than 99.9%, but it still needs to filter particles and water vapor.
2. Purification treatment measures
   • filtration: Fine particles (e. g. dust, oil mist) are removed through precision filters, which can increase the purity to more than 99.99%.
   • Drying: Use freeze dryer or adsorption dryer to reduce dew point, remove water vapor, and avoid condensed water affecting purity.

2. Industry Application Scenarios

1. general industrial scenario
   • purity requirements: 99.2-99.5% can meet most needs (e. g. pneumatic tools, spraying).
   • Treatment measures: Only basic filtration is required, no complicated purification equipment is required.
2. Precision Manufacturing and Special Industries
   • purity requirements: Need to reach more than 99.99 (such as electronic component production, food and drug packaging).
   • Treatment measures: Multi-stage filtration, drying and sterilization devices are required to ensure air cleanliness.

3. purity testing and promotion suggestions

1. detection method
   • particle counter: Detect the number of particles in the air and judge the purity level.
   • Dew point meter: Measure the water vapor content in compressed air and evaluate the drying effect.
2. Purity Enhancement Measures
   • optimize the compression link: Choose oil-free models or closed lubrication systems to reduce the risk of oil contamination.
   • Strengthen the purification process: Use multi-stage filtration (such as 0.01 micron precision filter) and deep drying (dew point below -40 ℃).

Conclusion: The purity of compressed air can reach 99.2 to 99.99 percent by selecting the appropriate air compressor type and purification treatment measures. The user should determine the purity requirements according to the specific use scenario, and configure the corresponding purification equipment to ensure that the compressed air quality meets the process requirements.