“…Currently, multipollutant absorption and removal strategies for coal combustion exhaust, reliant on methods like electrostatic separation or centrifugal separation, suffer from drawbacks including elevated maintenance expenses, safety hazards, and limited economic viability. , Relative to alternative dust removal techniques, the particle bed filtration process stands out for its enhanced stability in filter cake formation and superior capture efficiency. , Additionally, granular bed exhibits robust resistance to high-temperature gases and an extended operational life span, while boasting a simple structure, economical maintenance requirements, and substantial capacity. , These attributes collectively position it as a promising candidate for thermal filtration of particulate matter. The key of granular bed filtration technology resides in the arrangement of the granular bed and the choice of internal filler media. , Infiltration experiments encompassing varying bed structures and filter media thicknesses were conducted by Yin et al to validate the efficacy of granular bed apparatuses in PM 2.5 filtration.…”