CSTR comparison, complex reactions

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Our treatment of Chemical Reaction Engineering begins in Chapters 1 and 2 and continues in Chapters 11-24. After an introduction (Chapter 11) surveying the field, the next five Chapters (12-16) are devoted to performance and design characteristics of four ideal reactor models (batch, CSTR, plug-flow, and laminar-flow), and to the characteristics of various types of ideal flow involved in continuous-flow reactors. Chapter 17 deals with comparisons and combinations of ideal reactors. Chapter 18 deals with ideal reactors for complex (multireaction) systems. Chapters 19 and 20 treat nonideal flow and reactor considerations taking this into account. Chapters 21-24 provide an introduction to reactors for multiphase systems, including fixed-bed catalytic reactors, fluidized-bed reactors, and reactors for gas-solid and gas-liquid reactions. 

When the behavior of the studied system departs from a first-order behavior, which is the case for numerous chemical reactions, more complex relations can be developed between the efficiency and the NOU, whose expressions will not be detailed here. In a plug-flow system, and also in a CSTR, a direct relation, either explicit or implicit, exists between the efficiency and the NOU. Figure 2.1 presents the evolution of the efficiency as a function of the NOU for reaction orders between —1 and 2. The shape of the curves clearly depends on the reaction order, therefore enabling identification of the system order by comparison with experimental data and estimation of the operation time. 

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