Abstract
AbstractDue to its high reactivity, monochloroacetic acid (MCA) is an essential intermediate used in the manufacturing of a wide variety of chemicals. Its industrial production process is highly energy‐ and capital‐intensive, requiring costly purification steps to remove dichloroacetic acid (DCA) impurities. Here, an innovative eco‐efficient process for MCA‐DCA separation is proposed based on extractive distillation in a fully thermally coupled system (a dividing‐wall column (DWC) or an equivalent side‐rectifier configuration) using a new effective solvent: diethylene glycol dipentylether. The design was optimized by performing sensitivity analyses and varying key operating and design parameters. The study proves that separating MCA‐DCA by an extractive DWC (or thermally coupled) is feasible, efficient, controllable, economic, and sustainable.
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