In this paper extensive numerical calculations for the schematic reaction system A + B + C are described in which the successive reactions may be of either first or second orders or both. From these computations the optimum temperature profiles and maximum yield of B for a given process time may be
Studies in optimization—II: Optimum temperature gradients in tubular reactors
✍ Scribed by R. Aris
- Publisher
- Elsevier Science
- Year
- 1960
- Tongue
- English
- Weight
- 1002 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0009-2509
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✦ Synopsis
The method of dynamic programming ia used to solve the general problem of finding the temperature gradient in a tubular reactor, which will maximize some function expressing the profit made by the reaction. As an introductory example the reaction A + B + C when the yield of B is to be maximized is considered. This is followed by a detailed analysis of this reaction for first order kinetics, which confirms and extends the work of AMUNDSON and BILOUS. The solution of the general problem for a number of simultaneous reactions is then presented and some extensions discussed.
RBsum6
-La m&hode de programmation dynamique est utilisde pour r&oudre le probl&ne g&&al de la dhtermination du gradient de tempQature dans un r6acteur tubulaire, qui porters au maximum la fonction exprimant le progr&s d'une r&action. L'exemple pr&minaire est celui de la r&&ion A + B + C quand le rendement de B est pousd au maximum. Suit une analyse d&aiU&e de cette &action pour une cin&ique d'ordre 1 qui conllrme et &end le travail d'ADWNDsoN BILOUS. La solution du probleme g&n&al pour un certain nombre de r&&ions simultan&es est ensuite pr&entd et son extension disc&e. Zusammenfassung-Die Methode der dynamischen Programmierung wird benutzt, urn das allgemeine Problem zu l&en, den Temperaturgradienten in einem Rohrreaktor zu finden, bei dem eine Funktion den Reaktionsfortschritt ausdrhckt, die den Maximalwert annimmt. Ala einfiihrendes Beispiel wird die Reaktion A +B + C betrachtet, bei der die Ausbeute von B ein Maximum erreichen soll. Es folgt eine ins Einzelne gehende Analyse dieser Reaktion unter der Voraussetzung, dass die Teilschritte nach der ersten Ordnung verlaufen. Damit wird die Arbeit von AMUNDSON und BILOUS best&t&t und erweitert. Im Anschluss daran wird die L&nng des allgemeinen Problems fiir eine Reihe von Simnltanceaktionen angegeben, und einige Erweiternngen werden diskntiert. 1.
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