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本文以平均粒径为0.9mm的玻璃珠为流化颗粒,常温水为流化介质,在直径为97mm的半圆柱形液固导向管喷动流化床中,通过对喷动区和环隙区单位床高压降-流速曲线的分析并结合实验现象的观察,确定了喷动区和环隙区的流型及流型转变速度,在此基础上提出了液固导向管喷动流化床的流型图。研究结果表明,环隙达到流态化后,在较大的喷动液流速范围内,颗粒层能维持在较低的膨胀率状态下,这对流化床电极非常有利;液固导向管喷动流化床有较大的操作弹性。
In this paper, the average particle size of 0.9mm glass beads as fluidized particles, water at room temperature as a fluid medium, a diameter of 97mm semicircular liquid-solid guide tube spout fluidized bed, through the spout and annulus Based on the analysis of the high pressure drop-velocity curve of the unit bed and the observation of the experimental phenomena, the flow pattern and the flow pattern transition speed in the injection zone and the annulus zone were determined. Based on this, The flow pattern. The results show that the particle bed can be maintained at a relatively low expansion rate when the annular gap is fluidized, which is very favorable for the fluidized bed electrode. The liquid-solid guide tube spray Moving fluidized bed has greater flexibility.