Direct prediction of expanded bed height in gas-solid fluidization

摘要

Studies in the expansion behavior of fluidized bed system are important for specifying the height of the fluidized bed.The bed expansion takes place because of the bubbles.Any excess gas passes in the form of bubbles.Data have been obtained on the heights of fluidized bed for air-salt,air-magnesite,air-ammonium sulphate and air-sand system using different static bed heights.In this paper a correlation has been established to directly predict the expanded bed heights as a function of particle Reynold's number as well as fluid characteristics.It has been seen that calculated values by correlation agree well with the experimental values.