As the industrialization process accelerates, environmental issues are receiving more and more attention. In terms of air pollution, people’s requirements for emissions are getting higher and higher. Regarding industrial gas emissions, the main types of filters on the market are filter bags, metal fiber filter bag and ceramic filter elements. The following are the main differences between metal fiber filter bag  and ceramic filter elements, with a comparative statistical analysis of material, temperature resistance, filtration performance, filtration efficiency, etc.

1. Material of Metal Fiber Filter Bag  and Ceramic Filter Elements

Metal fiber filter bag is sintered by stainless steel fiber and wire mesh. The fibers are layed Randomly in a honeycomb pattern. The dirt-holding capacity is high. With the wire cloth protecting it, it’s very good on mechanical strength, such as resisting impacting and durable.

Ceramic filter element is made of porous ceramic, including Alumina, Silicon carbide and cordierite. It’s Porous honeycomb structure. The mechanical strength is lower, crisp and easily broken.

2. Resist on High Temperature

Metal fiber filter bag works under high temperature about 500℃. Stainless Steel 310S could reach higher temperature. Exceeding this temperature, it will oxidize or deform.

Ceramic filter element could operate on high temperature 800-1000℃. It works stably under such high temperature. But it’s not good at thermal shock resistance.

3. Filter Ability

Metal fiber filter bag could reach filter rating 1-10um. It meets the standard of PM2.5 emission requirement. It’s suitable for high temperature industrial dust, high temperature flue gas purification, large particles. It’s very thin and needs to reverse blow frequently. The lifetime is several years.

Ceramic filter element’s filter rating is 0.1-5um. It could also meet the standard of PM2.5 emission requirement. It’s also suitable for ultra fine dust and high temperature dust. The wall is very thick, 6-10mm, difficult to back blow very clean. It needs high temperature calcination regeneration.

4. Filter Efficiency

Metal fiber filter bag has good filter efficiency in long time.

Ceramic filter element has good filter efficiency at the beginning. Because of the thick wall, after being clogged, the filter efficiency will reduce.

5. Other Characters

The material of metal fiber filter bag is stainless steel. It’s very excellent on resisting acid, alkali and corrosion. The maintenance cost is very low. Regular back flow could make it clean. It’s light and easy to install.

Ceramic filter element is easy to be corrosive by chemicals. The maintenance cost is higher. It needs to replace once every several months. The regeneration cost is high.

Conclusion

We suggest clients choosing filter elements according to operation temperature and particle properties.

Metal fiber filter bag is more durable and economy. Ceramic filter element is suitable for the special high-temperature environment.