화학공학소재연구정보센터
Chemical Engineering & Technology, Vol.26, No.8, 845-852, 2003
Spouted bed reactors
The latest advances on conical spouted beds are discussed in this review. This contact method is especially useful for applications where a vigorous movement of the solid is required, for example, in the handling of solids that are sticky, of irregular texture, or with a large particle size distribution. Hydrodynamic correlations for calculation of the minimum spouting velocity, the operational and maximum pressure drops and bed expansion are presented. The gas flow pattern is described by means of a disperse plug flow model. Segregation is reduced and correlations are established following a similar procedure as in fluidization. Spout geometry and particle trajectories have been determined and the application of the conical spouted bed for pyrolysis of polyolefins is described.