Working Principle of Industrial Dust Removal Filter Bags In biomass power generation, industrial dust removal filter bags mainly work based on the principle of filtration. The filter bag is made of special filter materials with fine pores. When the flue gas containing dust particles generated during the biomass power generation process passes through the filter bag, the dust particles are intercepted by the filter material due to their larger size than the pores of the filter material, while the clean gas can pass through the filter bag and be discharged. This achieves the separation of dust and gas, playing an important role in purifying the flue gas and protecting the environment.