Choice the Right Dust Filter Bags

How to choice the right dust filter bags for your dust collector 

1. Flue gas temperature: the dust filter bag is the core component of the bag filter. Whether the selected filter material can adapt to the flue gas temperature is very important. If the normal use temperature of the filter material exceeds the temperature of the flue gas too much, the high cost of the high-temperature filter material causes an increase in equipment investment. If the normal use temperature of the filter material is lower than the temperature of the flue gas, it may cause the dust bag to be burned and cause great economic losses. 

According to the temperature of use, the filter material is divided into: normal temperature filter material below 130℃, medium temperature filter material 130~180℃, high temperature filter material 180~280℃.

2. The composition of the flue gas: including the dust content, specific gravity, particle size, viscosity, and moisture content of the flue gas. By understanding these determine the dust removal method of the dust collector, the post-processing method of the filter material and the filtering wind speed. 

Under normal circumstances, pulse bag filter is used for large dust volume, relatively sticky and light working conditions, and the filtering wind speed is mostly controlled above 1.2m/min, and a few working conditions are below 1m/min.

The post-treatment methods of filter media generally include microporous coating, water and oil repellent, antistatic, easy to clean dust treatment, etc.

3. The amount of flue gas processed: The processing air volume of the dust collector is usually the air volume of the working condition plus the system air leakage coefficient (10%~15%). Knowing the processing air volume and filtering wind speed of the dust collector, the total filtering area can be obtained through the formula: S=Q/60V. Among them, S: total filtration area, Q: system processing air volume, V: filtration wind speed.

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