A significant benefit of using a cyclonic dust collector as a pre-filter for baghouses or cartridge collectors is increasing removal efficiency. A cyclone removes all types and particle sizes of dust. At larger particle size, dust collection is nearly 100% but with smaller size (ex. sub-micron) particulate the collection can typically less than 5%.
Filter Cleaning Cycle
Filters such as bags and cartridge collectors get their high removal efficiencies by building up a dust layer over the filter. This dust layer allows air to pass through it and the filter while preventing dust particles from passing. As the dust layers build up, it becomes harder and harder for air to pass through, hence the increase in the pressure drop of the collector. The filter cleaning cycle is used to remove the top layers of this dust layer; thereby allowing air to pass through easier.
Particles in the Dust Loading
When large particles are in the dust loading, they will block more passages of the air. However, the layer may not be as uniform, thereby allowing high velocity channels that will allow the smaller particles to pass, with enough velocity to get through the filters. If the dust loading particle sizes are more equal (smaller) then the dust layer is more uniform, letting less small particles through, thereby increasing the removal efficiency.
The installation of a cyclone pre-filter removes the largest particles, allowing only the smallest to pass. This allows for a more uniform dust layer, thereby increasing the removal efficiency of the filters.
5 Signs Your Dust Collection System Needs a Pre-Filter
Watch the video from the Dust Efficiency Clinic discusses how using a pre-filter will optimize your dust collection system.
If you prefer this valuable information in white paper form, get our whitepaper, Top 5 Reasons to Use a Cyclone as a Pre-filter.
To learn more about which dust collector, please contact our experts at 440-543-7400 or visit our website: www.dustcollectorhq.com.
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