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The theory of micromixing for unsteady state flow reactors

✍ Scribed by Michael S.K. Chen

Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
926 KB
Volume
26
Category
Article
ISSN
0009-2509

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✦ Synopsis

The classical Danckwerts-Zwietering treatment of segregation has been generalized to unsteady state flow reactors of arbitrary geometric shape. Basic equations which can be used to predict two limits of the extent of chemical reaction are developed from the population balance equation. It is shown that the residence time distribution uniquely determines the extreme of micromixing and the distribution can be determined from a series of standard tracer experiments. Nauman's treatment is confirmed but the restriction to stirred tank systems is removed in this study.

Examples are given to illustrate the use of the theory. The segregation effect on a second order reaction is found to be small for both the isothermal and adiabatically cases. The effect on a biological growth process is very significant.

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