Coating of particulate materials in fluidized beds is a widely used technique to eliminate particle agglomeration,provide slow release of an active substance,or protect active ingredients.When thin polymer shells are ...Coating of particulate materials in fluidized beds is a widely used technique to eliminate particle agglomeration,provide slow release of an active substance,or protect active ingredients.When thin polymer shells are applied on a particle surface,it is important to determine the process parameters that provide coating uniformity.In this study,the degree of coverage,defined as the fraction of the coated surface of the particles,is proposed as a quantitative criterion of coating uniformity.A new model for the batch fluidized-bed coating process is presented.The model allows prediction of the function of particle distribution according to the degree of coverage at a given process time and thereby enables assessment of coating uniformity.An algorithm for the numerical solution of model equations for a batch fluidized-bed coater is described.The influences of the main process parameters on the coating uniformity were shown.展开更多
基金supported by the Council on Grants of the President of the Russian Federation(Grant No.SP-1951.2021.1).
文摘Coating of particulate materials in fluidized beds is a widely used technique to eliminate particle agglomeration,provide slow release of an active substance,or protect active ingredients.When thin polymer shells are applied on a particle surface,it is important to determine the process parameters that provide coating uniformity.In this study,the degree of coverage,defined as the fraction of the coated surface of the particles,is proposed as a quantitative criterion of coating uniformity.A new model for the batch fluidized-bed coating process is presented.The model allows prediction of the function of particle distribution according to the degree of coverage at a given process time and thereby enables assessment of coating uniformity.An algorithm for the numerical solution of model equations for a batch fluidized-bed coater is described.The influences of the main process parameters on the coating uniformity were shown.
