@air
2025-04-22
What if the air compressor doesn’t have a chance to dry it?
If the air compressor does not turn on the cold dryer (freeze dryer), the moisture in the compressed air will exceed the standard, causing the following chain problems:
1. Impact on equipment
- Corrosion of metal parts
- Electrochemical corrosion occurs between moisture and lubricating oil and metal surfaces, shortening the life of pipes, joints and other components by 50%-70%.
- Pneumatic component failure
- Moisture causes the solenoid valve coil to be short circuited, the cylinder seal ring to age, and the maintenance cost increases by 3-5 times.
- Lubricating oil emulsification
- Water mixes with lubricating oil to form an emulsion, which reduces the lubricating effect by 80%, and increases wear on bearings, gears, etc.
2. Impact on process
- Spray quality defects
- Moisture causes foaming of the paint film, reduces adhesion, and increases the rework rate by 20%-40%.
- Food packaging pollution
- Moisture breeds microorganisms, and residual water mist in the packaging causes moisture to the food, shortening the shelf life by 30%-50%.
- precision instrument error
- When moisture enters sensors, lenses and other components, the measurement accuracy is reduced and the calibration cycle is shortened by 50%.
3. Impact on energy efficiency
- pressure loss increases
- The density of humid air increases, the resistance of pipelines increases, and energy consumption increases by 12%-18%.
- condensed water is accumulated
- Water at the bottom of the gas storage tank accounts for 10%-30% of the volume, and the effective gas storage volume is reduced.
4. Safety and environmental risks
- explosion hazard
- In flammable and explosive environments such as mines and chemicals, humid air may cause sparks and explosions.
- noise pollution
- Moisture causes the vibration of the gas path to intensify and the noise level increases by 5-10dB.
Alternatives and emergency measures
| scene | emergency treatment | long-term programme |
|---|---|---|
| Short-term downtime | Drain water in the air storage tank and shorten the loading time of the air compressor | Install mobile cold dryer |
| Low temperature environment (below-5℃) | Use an adsorption dryer | Upgrade anti-freezing cold dryer |
| high-humidity areas | Add pre-precooler | Equipped with double tower dryer |
It is recommended to test the dew point of compressed air through the ISO 8573-1 standard. Medical, electronics and other industries need to ensure that the pressure dew point is ≤-40℃, and it is recommended to control it at ≤-20℃ for general industrial applications. For critical equipment, it is recommended to install an online dew point detector for real-time monitoring.
