Applying the Algorithm to an Endothermic Reaction

In Example 12-1 we studied the four different types of heat exchanger on an exothermic reaction. In this section we carry out the same study on an endothermic reaction. 

Jeffreys. in a treatment of the design of an acetic anhydride manufacturing facility, slates that one of the key steps is the endothermic vapor-phase cracking of acetone to ketene and methane  

Steady-State Nonisothermal Heactor Design—Flow Reactors with Heat Exchange Chapter 12 

He states further that this reaction Is tirsi-order with respect to acetone and that the specific reaction rate can be expressed by 

A bank of I0()0 1-in. schedule 40 tubes 1.79 m in length corresponds to 1.0 m- 0.001 mVtube = 1.0 dmVtube) and gives 20% conversion. Ketene is unstable and tends to explode, which is a good reason to keep the conversion low. However, the pipe material and schedule size should be checked to learn if they are suitable for these temperatures and pressures. The heat exchange fluid has a flow rate, m,-, of O.M I moWs, with a heat capacity of, 34.5 J/mol K. 

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