Document Lpzrarbk3V2nK6Y7zkyeyxrXg

USCA Case #24-1190 Co strip PM Evaluation -- Final Document #2062093 Apri 29, 2024 Filed: 06/27/2024 Page 37 of 92 Emission Reduction Technology Assessment 3.1.2 Pulse-Jet Fabric Filter Advantages Pulse-jet fabric filters have many advantages in comparison to other particulate matter control technologies: Brief cleaning pulse: The flow of flue gas through the bag does not have to be stopped during cleaning because the cleaning pulse is very brief, 0.03 to 0.1 seconds in duration. Constant pressure-drop: As some of the bags arc being cleaned in the system the remaining bags take on the extra demand. This, along with greater frequency of pulse jet cleaning, results in a nearly constant pressure drop across the system during operation. No isolation needed: Unlike other fabric filters, they do not need extra compartments to maintain necessary filtration because this method does not require isolated compartments of bags. Allows for higher gas flow rates and higher dust loadings: Since the pulse jet cleaning is a very intense and frequent method, these fabric filters can treat higher gas flow rates and higher dust loadings than other fabric filters. Allows for smaller fabric filters: Since the pulse jet cleaning method allows for higher gas flow rates and higher dust loadings, combined with dust cake buildup not being needed for efficient removal -- the fabric filters can be smaller than other types of fabric filters in the treatment of the same amount of dust and gas, making higher air-to-cloth ratios possible. Uninhibited by gas stream fluctuations: These fabric filters are relatively insensitive to fluctuations in the flue gas stream conditions, so that efficiency and pressure drop are relatively unaffected by these fluctuations. Simple operation: Process is based on simple filtration, allowing for a simple operation. Simple maintenance: They do not require the use of high voltage, like ESPs do, which allows for simpler maintenance activities. Low and high resistivity collection: Fabric filters are effective at collecting particulate matter with either low or high resistivity, while ESPs have a difficult time collecting high resistivity ash. Flexible installation: There are many options for fabric filter configurations, allowing it to work for almost any plant set-up. 3.1.3 Pulse-Jet Fabric Filter Disadvantages There are also various disadvantages to implementing pulse jet fabric filters as the particulate matter removal technology: Talen Montana 3-3 Sierra Club FOIA 2025-EPA-04883 Bums & McDonnell ED_018388_00000309-00037 SC_EVERSPLIT0006200