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Electric bag composite dust collector

In 1, an overviewI summed up the company in metallurgy, electric power, cement, building materials and other industries are widely used wide polar distance horizontal plate electrostatic precipitator and bag filter for many years on the basis of practical experience, and learn from foreign advanced a series of power plant boiler dust removal technology, developed with independent intellectual property rights of practical and efficient products - electric bag composite dust collector, it can better adapt to the power station boilers and industrial boiler combustion characteristics, boiler flue gas characteristics; fully considered in the running process of the possible adverse conditions, such as oil combustion, flue gas temperature anomalies," four tube" burst.This kind of electric bag composite dust collector effectively combines the electric precipitator and bag filter to their respective advantages, use level of electrical charge trapping large particles of dust and greatly reduce the flue gas into the chamber into the filter bag dust concentration, effectively avoids the large particles of dust in the inertial force on the bag to scour, improvement of service life of filter bag use. As the dust under the action of the electric field with the same charge, the outer surface of the bag attachment of dust layer filtration relatively shallow loose, the permeability is good, at the same time cleaning easier, thus can effectively reduce the running resistance, save the operating cost of equipment.2, work principleFlue gas through a pipe into the air pre heater, electric bag composite dust collector inlet horn, imported inside the horn has two levels of air distributing plate, flue gas through a cloth wind plate distribution after entering channel is arranged in the electric field, the electric field cathode and anode plates, containing dust particles in the gas is connected with a high voltage silicon rectifier cathode ray ( also called a corona pole ) and the ground between the anode plate formed by high voltage electric field through, because the cathode corona discharge, gas is ionized, at this time, with the negative ion gas, under the action of electric field force, the anode plate movement, is in motion and dust particles collide, the dust particles charged with negative, charged dust particles under the action of electric field force, but also to the anode movement, reaches the anode, released the band electronic, dust is deposited on the anode plate, and obtained the preliminary purification of flue gas and by further three-dimensional air distribution device into the flue gas through the filter bag filter bag chamber, complete further filtering, dust is blocked in the external surface of filter bag, filter clean gas in the bag, and through the exhaust duct drainage.In 3, the main characteristics of1), the dust removal efficiency can reach more than 60-80%, can realize the fly ash2), using subarea power supply, reduce electric zone fault on precipitator performance3), which can effectively avoid the coarse grain dust on the filter bag scour4), in favor of airflow distribution and diffusion, low running resistance5), for the existing electric precipitator transformationIn 4, the performance guaranteeDust emission concentration to ensure value for30mg/Nm3;Dust collector system running resistance < 1500Pa, running resistance:800-1200Pa;The dust remover body leakage rate≤ 2%;Dust removal equipment service life of 30years;Filter service life of more than30000 hours;Electromagnetic pulse valve service life of more than5 years.5, application fieldSteel, cement, electric power industries of flue gas treatment.