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See. 57   Evaluation of  Laboratory Reactors                  265

                                     5.7.3  Stirred Contained Solids Reactor (S’CSR)

                                     Although  there are a number of  designs for contained solids reactors. ai!
                                 are esszntially equivalent in terms of  performance:.  A  typical  design  is shown
                                 in Figure 5-16












                  Minimizes external
                      mass transfer
                        resistance










                                      Figure 5-16  Stirred conrained solids reactor. [From V.  Weekman, AlChE J. iCi,
                                      833, (1974) with permission of the AIChE. Copyright 0 1974 AIChE. AI1 nghts
                                      reserved.]

                                      5.7.4  Continuous-Stirred Tank Reactor (C§TR)

                                      The CSTR reactor (Figure 5-17) is used wher, “here  IS  si&i.,ifican, catdyai
                                 decay. Fresh catalyst is fed to the reactor along with the fiuid feed, an3 :he  cat-

                                                      i








                    One of the best
                       reactors for
                 isothermal operation







                                       Figure 5-17  Solids in a CSTR  [From V  Weekmar,, AIFhE J  d, 833, (1974)
                                       with pemssion of the AIChE  Copyright G I974 AIChC  Ali  ni&s  reserved 1
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