MEASUREMENT OF PARTICLE FLOW BEHAVIOR IN A PILOT-PLANT MULTI-SOLID FLUIDIZED-BED COMBUSTOR BY USING SUCTION PROBE TECHNIQUE

Measurements of the solid mass fluxes and particle size distributions were made by using a suction probe in a pilot-plant Multi-Solid Fluidi zed Bed (MSFB) combustor. The focus of this paper is to understand the flow structure in a MSFB under combustion conditions and the effect o f geometrical configuration of the combustion chamber on the internal flow structure and particle size distributions, This paper also presen ts the applicability of suction probe technique for measuring the part icle flow behavior in a hot model MSFB. The measurement results on the radial solid mass fluxes and particle size distribution show that not only the radial solid mass fluxes but also the mean diameter of parti cle and radial distribution of coarse particles (i.e. large coal parti cles (> 1 mm)) depend on the geometrical configuration of the combusti on chamber, The suction probe technique is found to be successful in m easuring solid mass fluxes and particle flow behavior under combustion conditions.