Abstract
AbstractThe reactive dividing‐wall column (RDWC) presents a highly integrated process that enables significant reductions in investment costs and energy consumption. However, the high degree of integration of this apparatus causes numerous interactions between kinetics, vapor‐liquid equilibrium, and mass transfer. To ensure a reliable operation of the RDWC, suitable control schemes need to be developed and experimentally validated. A decentralized control scheme for the RDWC is presented and for the first time experimentally investigated on an RDWC pilot plant. A comparison of experimental and simulated data is carried out and shows good agreement.
Highlights
Distillation is the most widely used separation technique in chemical industry
By combining reactive distillation and dividing-wall column, the reactive dividing-wall column (RDWC) enables the production and separation of up to four product streams. It combines the advantages of the dividing-wall column like reduced energy demand for separation [1, 2] and the advantages of reactive distillation like higher conversion rates and selectivity [3, 4]
In order to ensure the viability of the results for one operation point but different process conditions, a broad variety of different temperature and concentration profiles was chosen as starting points
Summary
Distillation is the most widely used separation technique in chemical industry. The high energy demand of this technology makes it responsible for a significant share of the global energy consumption. The reactive dividing-wall column (RDWC) is a prime example for such an efficient process. By combining reactive distillation and dividing-wall column, the RDWC enables the production and separation of up to four product streams. It combines the advantages of the dividing-wall column like reduced energy demand for separation [1, 2] and the advantages of reactive distillation like higher conversion rates and selectivity [3, 4]. [6] refer to the RDWC as ‘‘a step towards the ultimate sustainability in process industries’’. Simulation-based studies already showed a significant energy-saving potential compared to a sequence of reactive distillation and conventional distillation columns [7]
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