MASS TRANSFER OF NAPHTHALENE FROM AN IMMERSED SURFACE TO A SAND-AIR FLUIDIZED BED

 Fluidization process is widely used by a great assortment of industries worldwide and represents a trillion dollar industry [6].They are currently used in separation, classification, drying and mixing of particles, chemical reactions and regeneration processes;one of these processes is the mass transfer from an immersed surface to a gas fluidized bed. Mass transfer coefficient is a diffusion rate constant that relates the mass transfer rate, mass transfer area, and concentration gradient as driving force. It can be estimated from many different theoretical equations, correlations, and analogies that are functions of material properties. A Q.V.F. glass column was used in this investigation, with 8 cm inside diameter and 70 cm in long. An empirical correlation was developed for mass transfer of naphthalene vapor into air-sand fluidized bed by experimental studying of many variables. These variables are: temperature (39-66ْC), air velocity (1.2-1.4 U), and sand particle size (215,165,112.5 mµ ).mf