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Production Of Submicron Aerosols By Powder Depressurization, Amit Haryani
Production Of Submicron Aerosols By Powder Depressurization, Amit Haryani
Theses
Disaggregation of dry powders in shear flow has limitations in producing submicron particles. This study explores a new method for the production of submicron particles by the depressurization of powder aerosols. The depressurization mechanism is based on the rapid depressurization of the aggregated powder through a specially designed nozzle. As the pressure suddenly decreases from very high values inside the aggregates (800 psi) to ambient at the surface of such aggregates, disaggregation takes place due to the force exerted by the gas escaping through their pore structure.
he effect of various process parameters, namely: nozzle diameter, pressure and pretreatment with …