Designing a cartridge dust collector for better filter cleaning and reliable performance
In this article, a dust collection consultant explains how one commonly overlooked design factor for pulse-jet cartridge dust collectors, called the filter-periphery airflow velocity, can lead to poor filter cleaning and, eventually, a high pressure drop. As an example, he describes what he discovered about this design factor while investigating the source of an excessively high pressure drop in a glass-making plant's cartridge collector. He also explains how you can prevent high pressure drop and other problems by considering the factor when designing your own cartridge collector.
Poor cartridge dust collector performance often shows up in the form of a high pressure drop. Pressure drop [also called pressure differential or delta P] is the difference between static pressures upstream [on the dirty side] and downstream [on the clean side] of the collector's cartridge filters. When the collector is performing properly, the pressure drop is typically below 5 inches water gauge. When the pressure drop rises, it makes sense to check that the collector meets traditional design standards. But if the collector checks out correctly, there's often more to the story than first appears.