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These systems have been around for decades. Most likely you have heard the constant hiss of one of these units before. An example of a common jet pulsing system is pictured below.
Sound of Jet pulse using compressed air
Sound of Jet pulse using compressed air
There are many variables to consider when evaluating if you baghouse is operating correctly. Often a baghouse is designed for a specific purpose and then repurposed thinking it can handle a wide range of tasks. While this is true, the units efficiency often drops significantly resulting in less then desired performance. Below is a list of just a few common issues:
Frequent bag filter changes
Blowing the bag off of the cage
Blowing the cage and bag off of the holding plate
Plugged transfer lines
Damaged positive displacement pumps
Increased frequency of jet pulses causing pulses in the plant compressed air system
The signs of poor performance are not difficult to recognize. The image below depicts a baghouse filter that isn't functioning properly
Image of buildup while using jet pulse method
Image of buildup while using jet pulse method
It is true that a filter reaches peak performance after a layer of dust has collected onto the surface. This layer, also referred to as dust caking, decreases the pathways for dust trapped in the air stream to get through. Achieving the optimal build up to cleaning cycling is an important element in efficient baghouse operation.
This is a quick video walkthrough highlighting the jet pulse on the front center bag. Notice how the bag puffs up.
This video is a short depiction of particles traveling into the entrance of a baghouse. Some more recent enhancements to baghouse design are included in this video but there are still more that have been shown to significantly impact functionality and performance.
This video is a short depiction of particles traveling into the entrance of a baghouse. Some more recent enhancements to baghouse design are included in this video but there are still more that have been shown to significantly impact functionality and performance.
Please contact us if you would like to have your baghouse(s) evaluated. Many of the design improvements and / or system tuning features can be retrofitted to your existing system without the downtime and cost of a new baghouse.
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