Experimental Measurement on Bubble Parameters during Fluidized Bed Scaling

摘要

An experimental verification is reported on the bubble parameter similarity during fluidized bed scaling. Two bubbling fluidized beds were designed according to Horio's scaling method, and bubble size and mean bubble rising velocity were measured and compared. It can be concluded from the results that with the increment of u/u_(mf), the similarity between two beds increases with respect to the bubble diameter and rising velocity. The analysis of the experimental data confirms the applicability of Horio's method on bubble fluidized bed. When given dynamic behavior prediction of a real boiler is desired, the Horio's law is valid to establish a cold model and the analysis method introduced in the present paper can be used.