Geldart-D 类颗粒在长立管-漏斗系统悬料的初始条件

CIESC Journal

• RESEARCH NOTES • 上一篇

Geldart-D 类颗粒在长立管-漏斗系统悬料的初始条件

景山^a; 蔡国斌^b; 黄晟^b; 王金福^b; 金涌^b

^a Institute of Nuclear Technology, Tsinghua University, P. O. Box 1021, Beijing 102201,
China
^b Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2001-09-28 发布日期:2001-09-28
通讯作者: 景山

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

JING Shan^a; CAI Guobin^b; HUANG Sheng^b; WANG Jinfu^b; JIN Yong^b

^a Institute of Nuclear Technology, Tsinghua University, P. O. Box 1021, Beijing 102201,
China
^b Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:1900-01-01 Revised:1900-01-01 Online:2001-09-28 Published:2001-09-28
Contact: JING Shan

摘要/Abstract

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.

关键词: hang-up regime;standpipe-hopper system;Geldart-D powder

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.

Key words: hang-up regime, standpipe-hopper system, Geldart-D powder

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]. CIESC Journal.

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]. .

Geldart-D 类颗粒在长立管-漏斗系统悬料的初始条件

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

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