Page 110 - Design of Simple and Robust Process Plants
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4.2 The Methodology of Process Synthesis  95















                                                                      Mixers







                 Fig. 4.8. Nitration of aromatics in CSTRs in series versus adiabatic mixers in series.









                                    Heat
                                  exchange


                                  Reaction
                                    zone

                                    Heat
                                  exchange







                 Fig. 4.9. Reverse-flow reactor.

                  The above examples illustrate the evolution of reactor design from a series of tem-
                 perature-controlled CSTRs to adiabatic plug flow reactors. In this case additional
                 advantage can be taken of the heat of reaction for exothermic reactions.
                  The simplification of the energy configuration has a major impact on reactor
                 development, for example with reverse-flow reactors.
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