As an extension to our earlier work (1999a), this article presents a system
atic approach for the synthesis of combined separation/reaction systems whi
ch involves a phenomena-based representation formulated within a superstruc
ture optimization framework. A multifunctional, mass-/heat-transfer-based p
rocess module is utilized as the building block of process alternatives. Wi
thin this module, Gibbs-free-energy-based "driving-force" constraints are i
ntroduced to describe the physiochemical phenomena and to ensure feasibilit
y of pure separation, reaction or combined separation/reaction (such as rea
ctive distillation). A superstructure of these multipurpose modules is then
systematically constructed to represent process alternatives, which are no
t explicitly pre-postulated, but investigated as mass and heat exchange net
work possibilities.