| Geldart-D 类颗粒在长立管-漏斗系统悬料的初始条件 |
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| 引用本文： | 景山,蔡国斌,黄晟,王金福,金涌.Geldart-D 类颗粒在长立管-漏斗系统悬料的初始条件[J].中国化学工程学报,2001,9(3):331-333. |
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| 作者姓名： | 景山 蔡国斌 黄晟 王金福 金涌 |
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| 作者单位： | [1]InstituteofNuclearTechnology,TsinghuaUniversity,P.O.Box1021,Beijing102201,China [2]DepartmentofChemicalEngineering,TsinghuaUniversity,Beijing100084,China |
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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)a, 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.
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| 关 键 词： | Geldart-D类颗粒 长立管-漏斗系统 悬料 初始条件 循环流化床 |
| 修稿时间： | |
Incipient Condition of Hang-up in a Long Standpipe-Hopper System for Geldart-D Powders |
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| JING Shan,CAI Guobin,HUANG Sheng,WANG Jinfu,JIN Yong.Incipient Condition of Hang-up in a Long Standpipe-Hopper System for Geldart-D Powders[J].Chinese Journal of Chemical Engineering,2001,9(3):331-333. |
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| Authors: | JING Shan CAI Guobin HUANG Sheng WANG Jinfu JIN Yong |
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| Affiliation: | Institute of Nuclear Technology, Tsinghua University, P. O. Box 1021, Beijing 102201, China Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | 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. |
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| Keywords: | hang-up regime standpipe-hopper system Geldart-D powder |
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