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Light-direct Light-indirect Heavy-direct Heavy-indirect

Figure 17.20 Total annual costs for type IR (LLK + HHK , LK + HK) with four possible excess reactant designs: light reactant (LLK) excess with direct and indirect separation sequences and heavy reactant (HHK) excess with direct and indirect separation sequences.

Light-direct Light-indirect Heavy-direct Heavy-indirect

Figure 17.20 Total annual costs for type IR (LLK + HHK , LK + HK) with four possible excess reactant designs: light reactant (LLK) excess with direct and indirect separation sequences and heavy reactant (HHK) excess with direct and indirect separation sequences.

HK for a type IR system, we have the following two options for each choice: 1) heavy reactant excess versus light reactant excess and 2) direct versus indirect separation sequence. This leads to four design alternatives as shown in Figure 17.19. For the case in which the heavy reactant (HHK) is in excess, we have three components (LLK, LK, and HK) leaving the reactive distillation column for further separation. Essentially, all of the LLK

Foa 12.6 mol/s

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