A significant decrease in the pressure drop across a baghouse indicates which issue?

A significant decrease in the pressure drop across a baghouse typically indicates that the filtering mechanism is compromised, which is most commonly associated with a torn or damaged bag. In a functioning baghouse, a certain level of pressure drop is necessary to maintain proper airflow through the filter media. When a bag is torn, the air can bypass the filtration material, leading to a reduction in pressure drop. This situation also results in ineffective filtration, as particulate matter can escape into the atmosphere rather than being captured, which can be detrimental to both environmental compliance and operational efficiency.

Other issues such as blockage in the filter could lead to an increase in pressure drop, as the flow would be restricted. Improper airflow would not specifically result in a significant decrease in pressure; rather, it could cause fluctuations. Low fuel quality is unrelated to the performance of a baghouse as it pertains to combustion processes, not the filtration mechanisms employed in dust and particulate control.