Dynamic Modeling of a Sub‐zero, Fed‐Batch, Packed Distillation Column to Produce Tetrafluoroethylene

Abstract

AbstractEquilibrium and rate‐based dynamic models are proposed for a laboratory‐scale, fed‐batch, packed distillation column that operates at sub‐zero temperatures. The purpose of the column is to separate tetrafluoroethylene from a ternary mixture that also contains hexafluoropropylene and octafluorocyclobutane. The simulation results for both models indicate second‐order type responses, with either increases or decreases from the expected steady‐state values. It is recommended to build a start‐up routine into the simulations. Experimental validation should also form part of future work.