Abstract:
A method for detecting a cleaning process in a plant having filters (1, 31) arranged spatially offset from one another, wherein a first gas (21) having solid particles (20) is conducted in a first flow direction (10) filtered by a respective filter (1, 31). To clean the respective filter (1, 31), a second gas (22) is conducted through the filter (1, 31) opposite the first flow direction (10). Then listen to noise produced in the filtering or other physical phenomena to determine a condition of the filter including if it is being cleaned. To detect a cleaning process in a plant, a respective noise (12) is detected by acoustic sensors (2, 32, 2′, 32′, 42) arranged spatially offset from one another during the cleaning of the respective filter (1, 31). Further disclosed are a system for detecting a cleaning process in a plant having such filters, and such a plant.
Abstract:
A method for operating a filter system (1) for filtering an exhaust gas (11) of a metallurgical plant (12), which exhaust gas (11) comprises solid particles (10), wherein the filter system (1) has at least one electrode pair (2), to each of which an electrical power and/or an electrical voltage and/or an electrical current can be applied. A system for operating such a filter system includes (1) a plant for filtering an exhaust gas (11) of a metallurgical plant (12). The exhaust gas (11) includes solid particles (10). The metallurgical plant (12) includes such a filter system (1). In order to filter an exhaust gas (11) of a metallurgical plant (12), which exhaust gas (11) comprises solid particles (10), in a resource-saving manner, method steps include: identifying a process phase (7) of the metallurgical plant (12), identifying a feed-forward (8) of the respective electrode pair (2) dependent on the identified process phase (7), wherein the identified feed-forward (8) includes an electrical power and/or an electrical voltage and/or an electrical current to be applied, applying to the respective electrode pair (2) according to the identified feed-forward (8).