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Abstract�� Based on theories of branched pipe line and solid-liquid fluidization,a new type of combined distributor was developed for multi-pipe liquid-solid circulating fluidized bed.Distribution of solid particle in the pipe bundle was analysed in a cold model system and solid holdup and particle circulation rate were investigated.Experimental results show that the combined distributor,which is arranged in the inlet of chamber of the multi-pipe liquid-solid circulating fluidized bed,can effectively improve the uniformity of solid particle in the pipe bundle.

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Received 2007-01-15; published 2007-01-15

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��һƽ;�⳿��;��;��;.��׹ܽṹʵ��Һ�̾��ȷֲ�[J]. ��ѧ��ҵ�빤��, 2007,24(1): 44-47

WANG Yi-ping~1,WU Chen-xi~1,LIU Jun-jie~1,ZHU Li~2.Improving Liquid-Solid Distribution Uniformity by Using Concentric Tube[J]. Chemcial Industry and Engineering, 2007,24(1): 44-47

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