Slip Velocity in Downer Reactors: Drag Coefficient and the Influence of Operational Variables

被引：16
|
作者：
Islam, Mohammad Ashraful [1 ]
Krol, Stefan [1 ]
de Lasa, Hugo I. [1 ]
机构：
[1] Univ Western Ontario, Dept Chem & Biochem Engn, Fac Engn, Chem Reactor Engn Ctr, London, ON N6A 5B9, Canada
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2010年 / 49卷 / 15期
关键词：
CIRCULATING FLUIDIZED-BED; NONSPHERICAL PARTICLES; FLOW REACTORS; HYDRODYNAMICS; PREDICTION; MOTION; SPHERE; SHAPE; SIZE;
D O I：
10.1021/ie901466p
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Cluster formation in downer reactors is considered a most important factor influencing slip velocity between the flowing phases. This study investigates the formation of clusters using CREC-GS-Optiprobes. This probe is a nonintrusive device that records information from a well-defined optical measuring volume. This probe can provide accurate measurements tracking closely gas-solid flows in downer units. This study shows that cluster drag coefficients can be correlated as function of both Reynolds number and number of particles contained in agglomerates. This yields a close to linear relationship between cluster size and average slip velocity.
引用
收藏
页码：6735 / 6744
页数：10
相关论文
共 50 条
  • [21] Settling velocity and drag coefficient of platy shell fragments
    Li, Yanan
    Yu, Qian
    Gao, Shu
    Flemming, Burghard W.
    SEDIMENTOLOGY, 2020, 67 (04) : 2095 - 2110
  • [22] DRAG COEFFICIENT AND FALL VELOCITY OF NONSPHERICAL PARTICLES - DISCUSSION
    FUENTES, R
    ALONSO, ML
    AGUIRREPE, J
    JOURNAL OF HYDRAULIC ENGINEERING-ASCE, 1992, 118 (11): : 1589 - 1591
  • [23] DRAG COEFFICIENT AND FALL VELOCITY OF NONSPHERICAL PARTICLES - CLOSURE
    SWAMEE, PK
    OJHA, CSP
    JOURNAL OF HYDRAULIC ENGINEERING-ASCE, 1992, 118 (11): : 1591 - 1592
  • [24] Predicting the drag coefficient and settling velocity of spherical particles
    Terfous, A.
    Hazzab, A.
    Ghenaim, A.
    POWDER TECHNOLOGY, 2013, 239 : 12 - 20
  • [25] Exit velocity and drag coefficient of circular vegetation patch
    Dept. of Hydraulic Eng., Tsinghua Univ., Beijing 100086, China
    Sichuan Daxue Xuebao (Gongcheng Kexue Ban), 2012, SUPPL.2 (233-236):
  • [26] Drag coefficient and settling velocity for particles of cylindrical shape
    Gabitto, Jorge
    Tsouris, Costas
    POWDER TECHNOLOGY, 2008, 183 (02) : 314 - 322
  • [27] SLIP VELOCITY AND FRICTION COEFFICIENT OF LIQUID AGAINST WALL
    BARBIN, MB
    KOLLOIDNYI ZHURNAL, 1973, 35 (02): : 328 - 330
  • [28] Influence of drag-reducing polymer on flow patterns, drag reduction and slip velocity ratio of oil-water flow in horizontal pipe
    Abubakar, A.
    Al-Wahaibi, T.
    Al-Hashmi, A. R.
    Al-Wahaibi, Y.
    Al-Ajmi, A.
    Eshrati, M.
    INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2015, 73 : 1 - 10
  • [29] The influence of numerical models on determining the drag coefficient
    Dobes, Josef
    Kozubkova, Milada
    EFM13 - EXPERIMENTAL FLUID MECHANICS 2013, 2014, 67
  • [30] Comparison of formulas for drag coefficient and settling velocity of spherical particles
    Cheng, Nian-Sheng
    POWDER TECHNOLOGY, 2009, 189 (03) : 395 - 398
12345