Flue gas dust removal systems are widely used in industries such as thermal power generation, iron and steel, cement, coking, non-ferrous metals, petrochemicals, and waste incineration.
Before operating an electrostatic precipitator, it is necessary to inspect the electric field components, rapping mechanisms, ash discharge systems, and high-voltage power supply units. Power supply must be discontinued if issues such as an open circuit in the high-voltage output loop, a short circuit in the electric field, or an over-temperature alarm for the rectifier transformer occur during operation. Upon shutdown, the high-voltage system should be deactivated only after the main equipment has stopped running.
Before starting a baghouse dust collector, pre-coating the filter bags with dust is required, along with inspections of the filter bag installation and the dust cleaning system.
Automatic dust cleaning is recommended during operation, though a switch to manual continuous pulse cleaning is permissible if the pressure differential exceeds limits. After shutdown, the induced draft fan should ideally continue running to purge the system of hot, humid flue gas.
Safety issues that are easily overlooked can arise during the operation, shutdown, maintenance, defect rectification, or trial operation of dust removal equipment; therefore, safety management must be strengthened.