ELECTROLYTIC PROCESS OPTIMIZATION USING SIMULTANEOUS-MODULAR FLOWSHEETING TECHNIQUES

A methodology has been developed for the computer aided design and optimization of electrolytic process flowsheets. Simultaneous-modular optimization techniques provide a mechanism to screen options on an optimal basis during early stages of process development. Sensitivity analysis was used to identify key process variables which affect an overall economic objective. A design can be chosen that optimizes that economic objective while considering the entire process--not just the electrolytic reaction section. The example processes used to illustrate this methodology are the electrolytic production of methyl ethyl ketone from n-butene and the indirect oxidation of 1-naphthol to 1,4-naphthoquinone.;The present study used an ASPEN-based flowsheeting system to which several enhancements were developed. The enhancements were necessary for efficient electrolytic process simulation and optimization. The material and energy balances were solved for the entire process flowsheets along with capital and operating cost estimation. Minimum product selling prices were computed based on a desired rate of return on investment. For efficient optimization, the simultaneous-modular approach to flowsheeting was developed for an ASPEN-based system.