Combined types of adiabatic reactor

A similar presentation of the optimal design can be made when the cost of interchanger cooling is included or when cold shot cooling is used. The references given at the end of this chapter cover this phase thoroughly. 

Exercise 8.5,2, Consider how you would present and use the results of an optimal design in the form of tables of nnd other functions. 

The shape of the reciprocal reaction rate curve in Fig. 8.3 suggests that a combination of tubular and stirred tank type reactors might have some advantages over either one of them used by itself. If we consider the feed extent to be zero and inlet temperature Py, then for the stirred tank 

12 Illustrating the calculation of reaction time in combined types of reactor. 

However for any value lying beyond that is to the right of L in Fig. 8.12, the absolute minimum reaction time would be obtained by having first a stirred tank of holding time Tq) followed by a tubular reactor of 

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