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Reactor        Design














            There are numerous reactor types, but  in this chapter the objective is to consider
            only  a few common types.  These  are: batch,  continuous  stirred  tank,  homoge-
            nous plug  flow  and fixed  bed catalytic reactors.  To  size other reactor types and
            for  a more thorough treatment of reactor  design than presented here, the reader
            can consult books written on reactor design, such as Fogler [16], Smith [23], and
            Forment and Bischoff  [31].

            REACTOR SELECTION

            Because  of the variety of reactors available,  some engineers believe that reactor
            classification  is  not possible.  No  matter  how  incomplete  a  classification  may
            be, however, the designer needs some guidance, even though there may be some
            reactor types that  do  not fit into  any classification.  Accordingly, we  will clas-
            sify  reactors using the  following  criteria:

            1. form of energy supplied
            2. phases in contact
            3. catalytic or noncatalytic
            4. batch or continuous
            5. packed or suspended  bed

                In  Chapter  1, reactions  were  classed  according  to  the  form  of  energy  sup-
            plied  to the reaction: thermochemical, biochemical, electrochemical, photochemi-
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