Page 94 - Process simulation and control using Aspen
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86      PROCESS SIMULATION AND CONTROL USING ASPEN

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                                            FIGURE 2.47(b)

            As mentioned previously, when we do not specify the exponent for a component ,
        Aspen Plus uses a default value of zero. As the message on the screen, shown in
        Figure 2.47(b) reveals, it is true that the forward reaction rate does not depend on the
        product components. After completing the first reaction, select 'New' from the Reaction
        No. list. Enter '2; for the reverse reaction  QHe  C H + H2) and click OK (see Figure 2.48).



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                                             FIGURE 2 .48
          Subsequently provide the stoichiometric coeficient   s along with ex
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      th e screen, shown in Figure 2. 49.                                      ponents, and get
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