Info

Rj.

i

Pj.2

Rj,2 PJ

\3

Total Main-cut Products = 179.2 mol Total Campaign Time = 18.96 hr Maximum Production Rate = 9.45 mol/hr

Figure 8.21. Optimal Initial Charge Policy with Off-cut Recycle

The results clearly show the effect of off-cut recycling on the initial charge policy of each charge. Although very little improvement in terms of production rate is observed, the initial charge policies with and without recycle of off-cuts are quite different. Note that with off-cut recycle strategy, heavy off-cuts from batch 1 and 2 are being mixed with fresh charge at the beginning of the 3rd batch. As mentioned earlier this is not a thermodynamically sound policy. For more examples see the original reference.

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