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Lateral mixing in trickle bed reactors

DSpace at IIT Bombay

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Field Value
 
Title Lateral mixing in trickle bed reactors
 
Creator BABU, BV
SHAH, KJ
RAO, VGOVARDHANA
 
Subject parameter estimation
heat transfer
packed beds
mass transfer
 
Description Knowledge of lateral mixing is essential to understand heat and momentum transfer parameters in both single-phase liquid and two-phase gas–liquid co-current down flow through packed bed columns. The reactors through which gas and liquid concurrently flow downwards through a bed of catalytic packing are called trickle bed reactors. Experimental data on lateral mixing coefficients from both the heat transfer and radial liquid distribution studies are obtained over a wide range of flow rates of gas (0.01−0.898 kg/m2 s) and liquid (3.16−71.05 kg/m2 s) using glass spheres (4.05 and 6.75 mm), ceramic spheres (2.59 mm), and ceramic raschig rings (4 and 6.75 mm) as packing materials covering trickle flow, pulse flow, and dispersed bubble flow regimes. In the present work, an expression for estimation of lateral mixing coefficient (αβ)L is derived using the data on radial liquid distribution studies. The agreement between the values of (αβ)L obtained from heat transfer studies and from radial liquid distribution studies using the experimental data shows that there exists an analogy between the heat transfer and radial liquid distribution in packed beds. Since (αβ)L is an important variable for estimation of various heat and mass transfer parameters, a correlation for (αβ)L based on present heat transfer study is proposed. The agreement between the (αβ)L values estimated from the proposed correlation and experimental values is satisfactory with a standard deviation (s.d.) of 0.119.
 
Publisher Elsevier
 
Date 2009-03-13T12:29:32Z
2011-11-25T19:03:14Z
2011-12-26T13:07:12Z
2011-12-27T05:55:16Z
2009-03-13T12:29:32Z
2011-11-25T19:03:14Z
2011-12-26T13:07:12Z
2011-12-27T05:55:16Z
2007
 
Type Article
 
Identifier Chemical Engineering Science 62(24), 7053-7059
0009-2509
http://dx.doi.org/10.1016/j.ces.2007.08.042
http://hdl.handle.net/10054/929
http://dspace.library.iitb.ac.in/xmlui/handle/10054/929
 
Language en