Interaction between chemical reactions and mixing on various scales

Jerzy Robert Bałdyga , J.R. Bourne , S.J. Hearn

Abstract

The way in which reagents are mixed can have a large influence on the product distribution of a chemical reaction. This has been analysed earlier when micromixing is the limiting mixing step. Additional segregation at a larger scale has only been treated in detail when the local turbulent dispersion of a feed stream was relevant. Here additional segregation due to the finite disintegration rate of large concentration eddies is represented by a feasible structure to describe the environment within which micromixing and chemical reaction take place. The resulting model contains one time constant each for micro- and mesomixing. Their estimation is discussed and applied to predicting the yields of fast complex reactions in plug-flow static mixers and in a semibatch stirred tank reactor under conditions where neither macromixing nor turbulent dispersion were limiting. The comparison with measured yields is good for micromixing and fairly satisfactory for inertial-convective mesomixing. Further research on this step is needed.
Author Jerzy Robert Bałdyga (FCPE / DCRED)
Jerzy Robert Bałdyga,,
- Department of Chemical Reactor Engineering and Dynamics
, J.R. Bourne
J.R. Bourne,,
-
, S.J. Hearn
S.J. Hearn,,
-
Journal seriesChemical Engineering Science, ISSN 0009-2509
Issue year1997
Vol52
No4
Pages457-466
Publication size in sheets0.5
Keywords in Englishfast reactions, mesomixing, micromixing, semibatch reactor, static mixer, turbulent mixing
ASJC Classification2604 Applied Mathematics; 2209 Industrial and Manufacturing Engineering; 1500 General Chemical Engineering; 1600 General Chemistry
DOIDOI:10.1016/S0009-2509(96)00430-7
URL http://ac.els-cdn.com/S0009250996004307/1-s2.0-S0009250996004307-main.pdf?_tid=8930f484-c830-11e6-af64-00000aacb35e&acdnat=1482402326_adb329add3fb2f20b5e0d9c8ca20123f
Languageen angielski
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Bałdyga J. (i in.) - Interaction between chemical....pdf 827.88 KB
Score (nominal)35
Publication indicators WoS Citations = 124; Scopus SNIP (Source Normalised Impact per Paper): 2014 = 1.642; WoS Impact Factor: 2006 = 1.629 (2) - 2007=1.995 (5)
Citation count*145 (2015-03-28)
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