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提出了一种选择性排渣装置,用于实现循环流化床锅炉底渣的选择性排放以及回收底渣中细颗粒以调节炉内床料粒径分布。在一个可视化冷态试验台上对其气固流动特性进行了试验研究,试验结果表明:运行时间、主床和分选室的流化风速以及隔墙高度对分选室的颗粒分选情况有较大影响,可以通过调节分选室和主床的流化风速来调节排渣分选情况;当分选室与主床的流化风速比>1.43时,该排渣装置才会有好的粗细颗粒分选效果。
A selective slag discharge device is proposed to realize the selective discharge of the bottom slag of the circulating fluidized bed boiler and to recover the fine particles in the bottom slag so as to adjust the particle size distribution of the bed material in the furnace. The gas-solid flow characteristics were tested on a visual cold test bench. The experimental results show that the particle size of the sorting chamber is controlled by the running time, the fluidizing velocity of the main bed and the sorting chamber, and the partition height The larger impact, you can adjust the sorting chamber and the main bed fluidized wind speed to adjust the slag sorting; when the separation chamber and the main bed fluidized wind speed ratio> 1.43, the slag discharge device will have a good thickness Particle sorting effect.