The results show the particle velocity in the annulus area in this equipment is about an order of magnitude higher than that in ordinary spout-fluid beds;
结果表明：稀相喷流床中环隙区颗粒的下降速度比传统喷动床高出一个数量级；
2
The corresponding static bed height of the biggest spout fluid operating range and the relation between bed pressure drop and spout fluid velocity were determined.