The dust filter bag is made of polyester staple fiber, pps fiber, pp polypropylene, aramid fiber, etc., and is woven using a multi-sided brushing process to form a high-efficiency dust filter material.They are manufactured after considering factors like thickness, permeability, size, and fabric stability.
The dust filter bag has good ventilation performance, high dust removal efficiency, easy cleaning, and a certain degree of acid, alkali and heat resistance.
Industries use filter bags or sleeves to trap pollutants from the air, making it clean before passing through industrial chimneys. These filters are either oval or cylindrical.
Dust filter bags have good heat resistance, chemical corrosion resistance, oxidation resistance, hydrolysis resistance and wide adaptability。
Factors to consider when selecting dust filter bags
- Temperature: The flue gas temperature range (such as high temperature, low temperature or high temperature and high humidity) needs to be clarified, and filter bags made of temperature-resistant materials (such as PTFE is suitable for above 260°C) need to be selected.
- Humidity and dew point: High humidity or gas close to the dew point may cause condensation, and waterproof or anti-dew point filter bags need to be selected.
- Corrosiveness: When containing corrosive gas substances such as acids, alkalis, and oxidants, filter bags made of acid/alkali/corrosion resistant materials (such as glass fiber, PTFE) need to be selected.
- Dust properties: Including particle size (such as 90μm has the greatest wear resistance), viscosity, flammability and explosiveness, and whether it is easy to agglomerate.
- Filtration speed: Affects equipment investment and filter bag life, usually determined by experience (related to dust properties and concentration).
- Cleaning method: Wet or dry cleaning will affect the life of the filter bag and needs to be matched with the working conditions.
- Filtration accuracy: Select according to the impurity type (such as 0.5-2500μm). High precision requirements (such as micron level) need to balance flow and life.
Conclusion
Dust filter bags are a kind of high-efficiency filter material used to filter dust particles in the air. Dust collector bags are the core accessories responsible for filtering dust in the equipment. The shapes of the fabrics used vary depending on the use environment. In industrial applications, such as thermal power generation, steel, cement, chemical and other industries, dust filter bags play an important role in reducing air pollution and protecting the environment.