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Air Pollution Control

Common Hood Mistakes

by David Colborne, Project Manager

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In most industrial environments, the air pollution control system is underappreciated and given very little attention. It is the non-productive portion of the operation, so many are uninterested in investing money for a properly designed and efficiently operating air pollution control system. That baghouse out back is considered to be a necessary evil – something that is needed for worker safety or environmental compliance, but not an area where most plants want to focus their capital.

Moreover, when it comes to industrial ventilation systems, frequently most of the attention is on the ductwork and the pollution control device. The important element which is often overlooked and doesn’t get enough focus is the hoods and the hood design. If you cannot capture the dust or the fume at the source, it doesn’t matter how well designed the ductwork is or what the transport velocity measures or how efficient the filtration device is. Additionally, as is commonly explained, you only get one chance to capture the dust at its point of generation; once the dust gets away from the source and becomes fugitive dust, it’s only a matter of where it will settle.

This article will look at the most common hood mistakes that we see during our plant visits, why they are a problem and how they can be done correctly. Perhaps you’ve seen these hoods in your travels as well.

Continue reading this in the Barn Raiser.

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