Optimal reactor structures for exothermic reversible reactions with complex kinetics

✍ Scribed by F. Hopley; D. Glasser; D. Hildebrandt

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 575 KB
• Volume: 51
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(96)00096-6

✦ Synopsis

Exothennic reversible reactions are industrially very significant. Previous work has looked at finding the Attainable Region for elementary kinetics and in this paper we extend the work to find optimal reactors for more complex kinetics. Using these results we show how the complexity of the kinetics affects the nature of the optimal reactor. In particular it is found that the optimal reactor structure includes a novel element, namely two parallel structures, the first of which has preheating followed by the following reactors cotmected in series: a ping flow reactor, CSTR, plug flow reactor and finally differential side stream reactor, while the second structure is a plug flow reactor. The side streams in the DSR are taken from various points along the plug flow reactor making up the second parallel structure. Furthermore, it is also shown that in order to satisfy tmlgency conditions on the boundary of the Attainable Region, the rate of reaction of the material in the side stream to the DSR and that in the DSR at the point where the side stre.q,n is added must be equal. The equations describing the DSR operation as well as the conditions describing the operation of the other reactors in the optimal reactor structnre are given.