The problems of bag filters

such as influence of the filter bags material

the filtering speed

the resistance of filtering bags

the particle size of dust upon the efficiency of bag filters

as well as the disposal of waste and rejected filtering bags

etc.

have been discussed

and some measures for reducing the filtering speed

enhancing the filtering efficiency

and lengthening the service life of filtering bags being put forward.Reduction of the resistance in filtering bags may decrease the filtering efficiency

but increase of the resistantce in filtering bags

the energy consumption may be heightened.The pretreatment of dust can only reduce the concentraton of smoke incoming to the bag filter

being minutely helpful to enhance the filtering efficiency.Increasing the particle size of dust can enhance the filtering efficiency.