压力循环流化床中密封回料装置的运行

Operation of a Loop-Sealed Back-Feed in a Pressurized Fluidized Bed

对于压力循环流化床中密封口料装置的返料特性，系统运行压力、密封回料装置的两下侧进风和固体颗粒直径等的影响进行了试验研究。基于循环流化床回路上的压力平衡理论分析了密封回料装置的运行机理，提出了计算其中压降的方法。理论预测值和试验测量值比较吻合。

Abstract Experimental studies have been conducted on a pressurized fluidized bed's loop-sealed back-feeding appliance concerning its back-feed characteristics and the effect of the system's operation pressure. air entry at the loop-sealed backfeed's two lateral sides and the effect of solid particle sizes. An analysis of the loop-sealed back-feed's governing mechanism of operation is presented with the help of the theory of pressure balancing around the circulating fluidized bed loop as well as a method for calculating the pressure drop in it. Predicted and measured values agree resonably well with one another.