Effect of Co-Axial Rod Promoters on the Dynamics of a Batch Gas-Solid Fluidized Bed

Gas-solid fluidization often suffers from inherent drawbacks like channeling, bubbling and slugging which affect the quality of fluidization. Efforts have been made in this paper to improve the quality of fluidization in gas-solid fluidized beds by using two different types of co-axial rod promoters. The effects of fluid and solid properties, bed characteristics and the promoters on fluidization quality (in terms of fluctuation ratio) and bed pressure drop (in terms of Euler Number) have been presented in the form of correlations. The predicted and experimental values of fluctuation ratio and Euler number have been found to agree fairly well. G AS-SOLID fluidized beds suffer from certain inherent drawbacks like channeling, bubbling and slugging which result in poor homogeneity of the bed, thereby affecting the quality of fluidization. Investigations have been made to study the effect of turbulence promoters of different shapes, size and configuration on the quality of fluidization and bed pressure drop. Different types of bed internals such as