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对聚乙烯微孔板作为空气重介质流化床的气体分布器进行试验研究。研究了不同厚度和不同微孔直径的聚乙烯微孔板作为气体分布器的压降特性和流化特性,并对13~6 mm粒级煤样进行了分选试验。发现孔径最小5~10μm、厚度最大20 mm的微孔板作为分布器的流化稳定性最高,数量效率达到92.65%。
Polyethylene microplates were used as gas distributor for air-to-medium fluidized bed. The pressure drop characteristics and fluidization characteristics of polyethylene microplate with different thickness and different micropore diameters were studied. The 13 ~ 6 mm granular coal samples were tested. It was found that the microporous plate with the smallest pore size of 5 ~ 10μm and the largest thickness of 20 mm had the highest fluidization stability as the spreader, and the number efficiency reached 92.65%.