Recent Advances in Reactive Distillation

Reactive distillation (RD) combines chemical reaction and separation in a single unit essential to equilibrium-limited reactions. This new technique has multiple advantages over traditional processes, including lower operating costs, increased thermal energy efficiency, high product selectivity, high purity percentage, and lower environmental impact. This paper provides an overview of the features, industrial applications, and industrial perspective of Advanced Reactive Distillation Technologies (ARDT). The study focuses on five under-development ARDTs: Reactive Dividing-Wall Column (R-DWC), Reactive High-Gravity Distillation (R-HiGee), Reactive Heat-Integrated Distillation Column (R-HIDiC), Catalytic Cyclic Distillation (CCD), and Membrane-Assisted Reactive Distillation (MA-RD). The primary drivers for new RD applications are: reduced number of vessels, reduced residence time and holdup volume, increased mass and heat transfer, overcoming azeotropes, and prefractionation or impurity removal. ARDT's potential has yet to be studied, and research remains active to improve it further by investigating other RD technologies, simulation, and optimization techniques.