Attrition of a Mineral Catalyst in a Gasification Fluidized-Bed Gasification Reactor

Page: 844

M. Hartman, K. Svoboda, M. Pohořelý, and M. Šyc

Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, Prague


Experimental data are provided for the rate of attrition of lime particles in a batchwise fluidized-bed reactor at 850 °C. The influences of the operation time, gas velocity, and particle size were investigated. A simple empirical model is presented which describes the rate of attrition decaying exponentially with time. The attrition is viewed as a complex interplay of the hydrodynamic forces in the bed and mechanical strength of the bed material.


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