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Essentials of Chemical Reaction Engineering by H. Scott Fogler

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13.4.1 Startup

Startup of a CSTR

In reactor startup, it is often very important how temperature and concentrations approach their steady-state values. For example, a significant overshoot in temperature may cause a reactant or product to degrade, or the overshoot may be unacceptable for safe operation such as a secondary reaction runaway. If either case were to occur, we would say that the system exceeded its practical stability limit. The practical limit is specific to the specific reaction and conditions under which the reaction is carried out and is usually determined by the reaction safety engineer. Although we can solve the unsteady temperature–time and concentration–time equations numerically to see if such a limit is exceeded, it is often ...

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