Granular Bed Filter Development Program. Final report

Aerosol filtration by a cocurrent moving granular bed: penetration theory

“…Solving eq 7 for sp produces Sp = QgiCi -0(1e")/(QGPp) (8) where C¡ = entering aerosol concentration (kg/m3). Substituting eq 8 into eq 6 yields…”

“…Granular bed filters are of interest for collection of particles from hot gas streams in advanced power-generation systems such as combined cycle coal gasification or pressurized fluidized bed coal combustion (2)(3)(4)(5)(6)(7). A recent review of granular bed filtration theory and experiments is provided by Yung et al (8).…”

“…Factors affecting reentrainment are also poorly understood. However, reentrainment in moving granular bed filtration experiments significantly affects overall bed efficiency (7,13). A penetration model for a moving granular bed filter must account for reentrainment related to granular motion.…”