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How Choose The Right Filter Bag For Power Plant Boiler Dust Collector

For the different of burning media ,boiler deduster consists of coal-fired boiler ,biomass boiler ,vertical boiler ,hand fired boiler ,chain boiler . For the different burning media ,smoke components and working condition ,When we choose the dust collector cloth ,we should pay attention to the flowing aspects :

1. The ability of acid and alkaline corrosion resistance dust collecting bag

When coal-fired boiler deduster open and stop under the dew point , the so2 in the flue gas and the H2O in the air will reacted to be vitriolic acid .It cause that the fiber of dust collector bag will change the shape and lose its strength .When we choose the dust collector bag ,we should consider the acid and alkaline corrosion of dust collecting bag .

2. The filter accuracy of the dust collector bag

If the boiler dedusters filter speed above the design standard ,it is easy to lead to the micro dust in the fiber of the filter bag and create filter bag blocking.Aim at this phenomenon ,we should choose film-filter dust collector bag.

3. If the temperature of the flue gas in the coal fired boiler is too high ,it is easy to make the filter bag harden or thaw to generate broken hole .The flake and hot dust in the flue gas is easy to burn and create the hole of the filter bag too .


 Dust collector filter bag


Continuous temperature


Peak Temperature


Description


Resistance to Acids


Resistance to Alkali


Resistance to Oxidation


PH Value


PP filter bag


90ºC


95ºC


PP


Excellent


excellent


restricted


1~14


Acrylic filter bag


125ºC


140ºC


DT


good 


good 


good 


3~11


Polyester dust filter bag


150ºC


150ºC


PE


restricted


moderate


good 


4~12


PPS filter bag


190ºC


200ºC


PPS


Excellent


excellent


moderate


1~14


Polyimide filter bag


240ºC


260ºC


P84


good 


moderate


good 


3~13


PTFE 100% filter bag


250ºC


280ºC


PTFE


Excellent


excellent


excellent


1~14


Fiberglass Filter bag


260ºC


300ºC


BQ


good 


good 


good 


3~11
 

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