Abstract: A system for removing particulates and/or components from a flue gas includes two or more filter chambers having filter bags, each having a filter surface where particulates are separated from a flue gas stream passing through the filter surface; at least one header tank having cleaning air at a controlled pressure, the header tank being connected to a cleaning air supply and being in fluid communication with at least one flow valve; and a first controller controlling the flow valve opening and closing when a differential pressure across all filter chambers reaches a setpoint. The system uses the first or a second controller to control a flue gas residence time by an adjustment of: the cleaning air pressure in the header tank based on a measured time between two consecutive pulses; and/or each filter chamber's individual cleaning frequency based on measured values of differential pressure and gas flow per chamber.