ABSTRACT
As we have seen in Chapter 4, the analysis o f nonisothermal reactors in any general way, even for the ideal PFR and CSTR, is not possible to the same degree of elegance as for nonisothermal reactors because of the intractable nonlinearity o f the Arrhenius equation. When we graduate to the more complicated models of nonideal reactors, the problem is o f course compounded. For example, while the CSTR-sequence model retains its algebraic structure, the energy balance requires solution of an equation implicit in temperature for each unit; stagewise com putation is required and much of the convenience of that model is lost. Similarly, dispersion models require numerical solution. The result of this will be a slight change in emphasis in the chapter, with more attention being given to the strategies and procedures involved in the solution of nonisothermal models. Hopefully, the justifications for the choice o f models for nonideal reactors has been sufficiently established so that we can take care of some more practical business.
