Quantitative comparison of dynamic controllability between a reactive distillation column and a conventional multi-unit process

Kaymak D. B. , Luyben W. L.

COMPUTERS & CHEMICAL ENGINEERING, vol.32, no.7, pp.1456-1470, 2008 (SCI-Expanded) identifier identifier


A comparison of the steady-state economic optimum designs of two alternative chemical processes was presented in a previous paper [Kaymak, D. B., & Luyben, W. L. (2004). A quantitative comparison of reactive distillation with conventional multi-unit reactor/column/recycle systems for different chemical equilibrium constants. Industrial & Engineering Chemistry Research, 43, 2493-2507]. A generic exothermic reversible reaction A + B <-> C + D occurs in both flowsheets, which consist of a conventional multi-unit reactor/separator/recycle structure and a reactive distillation column. Results showed that the reactive distillation process is significantly less expensive than the conventional process for a wide range of the chemical equilibrium constant when there is no mismatch between the temperature favorable for reaction and the temperature favorable for vapor-liquid separation.