The boiler dust collector is a kind of unit combined dust removal equipment with large air volume, low filtration wind speed, good dust removal effect, high dust removal efficiency, reliable operation, convenient maintenance and small footprint. Modular production, stable quality. Widely used in power, metallurgy, building materials, chemical and other industries of the boiler, flue gas dust removal and material recovery, dust treatment.
Boiler precipitator by smooth operation, low resistance, low energy consumption, soot cleaning effect is good, cover an area of an area small type XLDM offline ash removal of low pressure pulse bag filter ontology, protection system, compressed air system (including tank, oil-water separator, line), control systems, including instrumentation, PLC cabinet, MCC cabinet, site operation cabinet), etc.
Boiler precipitator flue gas enter the venturi, through into the flue at the entrances to the throat evenly by water injection, because the flue gas high speed movement, so the injection water by melting into ashes raw materials in the fine water spray wet flue gas, in this way, ashes raw materials and the condensation of water droplets collision occurs, especially material diameter of tiny dust material can be water mist water soluble. Reached a dust removal and desulfurization, these for the separation of ash is well prepared, then into the cylinder, remain vulnerable to quickly reduce the temperature of flue gas pool of limewater, dust and SO2 in flue gas with the pool of limewater reaction sulfate, in under the action of inertial force, gravity, adhesion, cohesion, sink to the bottom The desulfurization process, The water spray stirred up by the flue gas, the water mist and the flue gas after washing are under the gravity of the fan, the gas and water are lifted at the same time, so that the flue gas and lime water fully react, and then the gas and water are separated through the impeller dehydrator, the water flows into the pool through the drainage pipe, and the flue gas completes the third dust removal and desulfurization, and the purified gas is discharged into the atmosphere through the fan.
Boiler dust collector adopts three state off-line pulse ash cleaning, which is automatically controlled by dust collector PLC. With the operation of dust collector, the dust on the surface of filter bag increases, and the gas resistance increases accordingly. When the resistance increases to the set value, PLC can be set according to the way (differential pressure control, time control, manual control) for each chamber cycle cleaning. The dust collector starts to shut down the air in the sub-chamber for off-line pulse spraying and ash removal.
By PLC programmable electric control instrument according to the set pressure difference control program, first close a chamber exhaust valve chamber by chamber, so that the chamber filter bag is in the state of no airflow through, and then row by row open pulse valve with low pressure compressed air to filter bag pulse spray ash, dust collected in the ash hopper, by the rotary ash discharge valve unloaded into the ash transport system below. When the chamber filter bag is finished cleaning, open the exhaust valve to restore the filtration state of the chamber, and then clean the next chamber chamber by chamber.