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Optimum Cycles For Falling Rate Processes

Optimum Cycles For Falling Rate Processes Graphical procedures are derived for predicting both the maximum production and minimum cost cycles for falling rate processes in which the cleaning time fi, is composed of a constant portion, e,, and a variable portion, e,, which is directly proportional to the cumulative throughput P at the time the cleaning is started. The procedures turn out to be similar to those for invariant e,, with 8,, replacing 8, in the graphical construction. On a Ctabli des mkthodes graphiques pour prkvoir les cycles i production niaximale et B colit minimal, dam le cas des procCdks i vitesse dCcroissante dans lesquels le temps de nettoyage e, comprend une portion constante e,, et une portion variable e,, directement proportionnelle A la production cumulative P au moment 0; le nettoyage commence. Les mkthodes se sont avCrCes semblables i celles qu'on emploie avec 8. constant, e,, jouant le rBle de 8 , dans la construction graphique. here are numerous processes in the chemical industry in which the production rate intrinsically decreases with time. Examples are batch constant pressure filtrztion"', fixed bed ion exchange'2' and constant temperature difference evaporation with scale f ~ r m a t i o n ' ~ A typical http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Canadian Journal of Chemical Engineering Wiley

Optimum Cycles For Falling Rate Processes

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References (2)

Publisher
Wiley
Copyright
Copyright © 1981 Canadian Society for Chemical Engineering
ISSN
0008-4034
eISSN
1939-019X
DOI
10.1002/cjce.5450590512
Publisher site
See Article on Publisher Site

Abstract

Graphical procedures are derived for predicting both the maximum production and minimum cost cycles for falling rate processes in which the cleaning time fi, is composed of a constant portion, e,, and a variable portion, e,, which is directly proportional to the cumulative throughput P at the time the cleaning is started. The procedures turn out to be similar to those for invariant e,, with 8,, replacing 8, in the graphical construction. On a Ctabli des mkthodes graphiques pour prkvoir les cycles i production niaximale et B colit minimal, dam le cas des procCdks i vitesse dCcroissante dans lesquels le temps de nettoyage e, comprend une portion constante e,, et une portion variable e,, directement proportionnelle A la production cumulative P au moment 0; le nettoyage commence. Les mkthodes se sont avCrCes semblables i celles qu'on emploie avec 8. constant, e,, jouant le rBle de 8 , dans la construction graphique. here are numerous processes in the chemical industry in which the production rate intrinsically decreases with time. Examples are batch constant pressure filtrztion"', fixed bed ion exchange'2' and constant temperature difference evaporation with scale f ~ r m a t i o n ' ~ A typical

Journal

The Canadian Journal of Chemical Engineering – Wiley

Published: Oct 1, 1981

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