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Incipient Condition of Hang-up in a Long Standpipe-Hopper System for Geldart-D Powders

Incipient Condition of Hang-up in a Long Standpipe-Hopper System for Geldart-D Powders
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摘要 The incipient condition of hang-up for three Geldart-D powders has been experimentally studied in a 21 m long standpipe hopper system. Experimental results show that the pressure gradient for hang-up to occur is independent of the materials height in the hopper and the diameter of orifice and equals to (dpw/dl)s, which can be predicted by Eq. (7). While the corresponding gas velocity in the standpipe equals to the incipient fluidized velocity of particles at the high pressure and can be predicted by Kwauk's equation. The incipient condition of hang-up for three Geldart-D powders has been experimentally studied in a 21 m long standpipe hopper system. Experimental results show that the pressure gradient for hang-up to occur is independent of the materials height in the hopper and the diameter of orifice and equals to (dpw/dl)s, which can be predicted by Eq. (7). While the corresponding gas velocity in the standpipe equals to the incipient fluidized velocity of particles at the high pressure and can be predicted by Kwauk's equation.
出处 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2001年第3期331-333,共3页 中国化学工程学报(英文版)
关键词 hang-up regime standpipe-hopper system Geldart-D powder Geldart-D类颗粒 长立管-漏斗系统 悬料 初始条件 循环流化床
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参考文献3

  • 1Jing S,Powder Technol,2001年,115卷,1期,8页 被引量:1
  • 2Zhang J Y,Powder Technol,1998年,97卷,1242页 被引量:1
  • 3O'Dea D P,Powder Technol,1990年,63卷,169页 被引量:1
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