The hydrodynamics of a gas-liquid-solid circulating fluidsized bed was investigated. A new regime, the three phase circulating fluidization regime, was discovered for the first time. The characteristics of this regime were compared with that of the conventional fluidization regime and the transport regime. The particle circulation rate and the gas and solids holdups in circulating fluidization regime were studied.On a ttudit I'hydrodynamique d'un lit fluidid circulant gaz-liquide-solide. Un nouveau r6gime, le d g h e de fluidisation circulant triphasique, a t t t dkouvert pour la premikre fois. Ses caractkristiques sont cornparks h celles du rtgime de fluidisation classique et du rtgime de transport. On a thidit la vitesse de circulation des particules et les retentions de gaz et de solides en rCgime de fluidisation circulant.
The texture of an extra low-carbon and high strength bake-hardening sheet steel (i.e. ELC-BH sheet) processed in our laboratory through a new invented technology has been investigated by means of ODF method, so that the cause of the very high ?--value
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