Some of the elements you need to consider will be your dust properties and air-to-cloth ratio. Baghouses are ideally suited for large volume applications with airflow exceeding 1,000 CFM or when high temperature applications are above 375 degrees. In these environments, a baghouse will handle and most efficiently filter your dust laden air.
There are three main styles of baghouses (e.g. shaker, reverse, and pulse-jet) that are commonly used in most industrial processing and manufacturing applications. Here’s a brief overview on the pros and cons of each to help guide you in identifying the right option for your work environment.
|Constantly cleaned so there is minimal dust build up in the dust collector||Requires dry compressed air|
|Space Efficient||Cannot be used when there is humidity of high moisture content present|
|Requires fewer bags||Cannot handle high temperatures (unless you use special filter media|
|Can handle high temperatures||Needs to be cleaned often|
|Gentle cleaning which allows for longer bag life||Residual dust build up is hard to remove|
|Units are typically compartmentalized into sections which allows them to be cleaned without shutting off the entire baghouse||Low air-to-cloth ratio|
|Very simple to operate||Cannot handle high temperatures|
|Low initial investment cost||Not space efficient (takes up a large area)|
|Units are typically compartmentalized into sections which allows them to be cleaned without shutting off the entire baghouse||Energy and time sensitive|
Some of the biggest problems we see people run into with an inappropriately sized dust collector are:
-Reduced filter life
-Consistently clogged filters
-Higher maintenance and energy costs
To avoid the dangers of an undersized dust collector we ask you to consider both CFM and Air to Cloth Ratio.
Dust collector volume is measured in cubic feet per minute or CFM. To put it simply, CFM is a measurement of how much airflow your dust collector can move per minute. To determine your CFM, there are a few variables you should consider:
-The size of the area that needs ventilation.
-Method of ventilation
-Volume of dust being produced
The other important factor to consider when sizing your unit will be Air to Cloth ratio. This is the amount of filter media relative to the amount of air passing through the dust collector. You typically want to operate with a lower a air to cloth ratio because that will be better at removing dust from your environment. With a lower air to cloth ratio you have plenty of filter media available to capture the dust coming through from the air stream, and you aren’t trying to push as much dust through the filter media. When you air to cloth ratio is too high, the dust you are trying to collect is embedded into the filters too fast for your system to efficiently pulse. You end up with rapid build up of dust, which ends up clogging your filters and making your dust collector work even harder than it should be.
For more detailed information on sizing your collector, how to choose the right dust collector for your application, or to speak to one of our equipment specialists please contact us at 888-221-0312.