In dust collector design, humidity is a fundamental problem. The moisture in the incoming air mixes with dust, forming sludge. This sludge adheres to the walls and bags, causing bag failure. Additionally, humidity makes the dust in the collection hopper sticky, making its discharge difficult. To address these issues, the incoming air must be dried or dehumidified. This article examines moisture infiltration in dust collection systems.
How to Prevent Moisture Infiltration in Dust Collection Systems?
Moisture is generally harmful and damaging to dust collection systems, typically entering the system through two pathways. The first is the moisture in compressed air supplied to the pulse-jet system. During the compression process by the compressor, the volume of intake air containing water vapor is reduced. However, water vapor cannot be compressed and condenses into liquid. For example, if 20 cubic meters of air containing 1 cubic meter of water vapor is compressed to 7 cubic meters, the same 1 cubic meter of water remains in this volume, creating liquid. To prevent this issue, filter dryers, moisture traps, or refrigerant dryers should be used to remove water from the compressed air.
Dew Point-Induced Moisture
Dew point-induced moisture is the second source of humidity in dust collection systems. The dew point is the temperature at which water vapor in the air condenses into liquid. This phenomenon occurs when cold external air comes into contact with the warm air inside the dust collector.
In the dust collection process, if the filtered air has a high temperature and experiences a sharp drop upon entering the filter, condensation forms inside the dust collector chamber. The resulting moisture condenses on the filter housing, causing collected dust to adhere to the walls or creating material buildup and bridging in the collection hopper.
Conclusion
In conclusion, it must be emphasized that moisture in any form is detrimental to filter systems and dust collectors and should be prevented from entering the dust collection process. The use of controllers and proper insulation significantly enhances system performance and ultimately preserves the integrity of the dust collection system.
بدون دیدگاه