Expansion of gas-solid fluidized beds at pressure and high temperature

Experimental results for the expansion of a fluidized bed operating at pres sure (1-15 bar) and high temperature (20 degrees-600 degrees C) are present ed for particles belonging to groups B and D. The influence of the diverse variables on bed expansion is analysed. Furthermore, a semiempirical model has been developed which allows the prediction of bed expansion as a functi on of a new parameter, the "expansion coefficient". (C) 2000 Elsevier Scien ce S.A. All rights reserved.