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Abstract�� The partical flow pattern in a downcomer of circulating fluidized bed with fluidized-bed catalytic cracking catalyst or silica gel were investigated by means of measuring the local patical velocity and local particle concentration

Keywords�� s:circulating fluidized bed (CFB);downcomer;particle flow

Received 1995-04-15;

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��ڱ��٣��.ѭ��Ϲ��ʵ��о�I��[J]. ��ѧ��ҵ�빤��, 1995,12(2): 27-33

Dong Zhongbing;Zhao Lianzhong;Yang Guilin.The Gas-Solid Flow in Downcomer of Circulating Fluidized Bed I��Particle Flow[J]. Chemcial Industry and Engineering, 1995,12(2): 27-33