Date on Master's Thesis/Doctoral Dissertation


Document Type

Master's Thesis

Degree Name

M. Eng.


Chemical Engineering

Committee Chair

Laukhuf, Walden L. S.


Fluidization; Drying


The use of a fluidized bed dryer to dry acrylo-nitrile- butadiene-styrene terpolymer was studied. Data for fluidized bed drying were obtained from the Monsanto Company's fluid bed dryer. Fluid bed theory, drying phenomena, and fluid bed drying limitations were investigated. With the theory of fluidization and drying, a mathematical model of the system was derived and a computer program to perform the simulation was written. The program varied temperature of inlet air, humidity of the inlet air, and inlet air flow rate. The program was run for eight different operating conditions involving changes in inlet solid moisture content, outlet solid moisture content, and inlet solid flow rates. The model suggests that the Monsanto dryer may have too short a residence time. The possibility of increasing the solid flow rate to the dryer was also investigated. Increasing solid flow rate to the dryer would cause a significant amount of particle entrainment.