Changes in operating strategy can potentially lead to considerable energy savings. This can be achieved without substantial process hardware changes and thus with low capital expenditure. In the context of divided wall column application, the implementation of these ideas can be a true game changer for energy consumption in the US chemical industry (there are around 40,000 distillation columns in operation, accounting for about 40% of the energy consumption for this industry). The technology transfer plan in this project will directly translate into first industry application.
Proposed feasible divided wall column designs for two systems: MMA-MEOH-H2O (methyl methacrylate-methanol-water) & MEG-TEG-DEG- H2O (mono ethylene glycol –tri ethylene glycol – diethylene glycol – water) that interested by Dow Inc.
Ethylene glycol divided wall column (DWC) can achieve 6.8% savings in energy while reducing 5.5% total number of stages comparing to conventional setup.
Identified auxiliary operating points for dynamic intensification of ethylene glycol DWC and demonstrated 1.5% savings in energy duty and 1.6% savings in energy cost.