For the cumene problem in Section 24. 4, it has been determined that the feed is off specification. Until a new propylene supplier can be contracted with, the propylene from the current supplier will have to be used. Tests have shown that this propylene can be expected to have between 5 \(\mathrm{wt} \%\) and \(10 \mathrm{wt} \%\) propane impurity. It has been decided to try to maintain the design cumene production rate by increasing the propylene feed rate so that a constant, design amount of propylene enters the reactor. Identify the bottlenecks to the proposed process change.

Debottleneck this situation.

Data from section 24.4

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In this section, a troubleshooting problem involving an entire process is presented [3]. It is based on the production of cumene problem presented in Appendix C. Figure C.8. The process flowsheet and stream flow table are included in Appendix C.