Bag Filter vs Electrostatic Dust Collector

Coal-fired boiler flue gas dust removal technology has experienced water film dust, bag type dust to the process of electrostatic type dust. With the national environmental protection requirements and the usage of bag filter practice, and now there have been the trend of the usage of bag filter.

In the early usage of boiler bag filter, many projects accepted the pain of failure. The main reason is that the matching parts, especially the filter material quality of the key components of the dust collector is not pass, but at home and abroad are the lack of reasonable prices, high temperature, can be applied to coal-fired boiler flue gas dust removal material.

After the failure of the bag filter, coal-fired boiler flue gas dust basic application of electrostatic dust collector. But with the national environmental protection requirements increase, the extensive usage of electrostatic dust collector, and its weaknesses are gradually exposed.

First, the dust removal efficiency of the electrostatic dust collector is not guaranteed. In the early stage of the electrostatic dust collector, the efficiency of dust removal can reach 99%. However, due to the change of coal-fired varieties and the limitation of the structure and working principle of the electric dust collector, the internal components of the electrostatic dust collector are deformed and fouled due to the running time electric field changes, dust effect all the way down, serious discharge exceeded, become a heart disease for power plant.

Second, the electrostatic dust collector runs at a high cost. Electrostatic dust collector runs a cycle, the ministry of structural deformation, serious damage, in order to ensure the normal operation of the power plant had to repair the electrostatic dust collector. Maintenance of the input of human, material and maintenance losses caused by the shutdown of the power plant is not a decimal.

At present, along with filter material of the bag filter and other accessories production technology is increasing day by day, the original bag filter in the coal-fired boiler flue gas dust in the usage of failure factors have been resolved. Especially the successful usage of off-line maintenance technology, makes the pulse bag filter in the boiler dust removal technology has been strong support.