Analysis and conceptual design of ternary heterogeneous distillation processes

Abstract:
Design phenomena in heterogeneous distillation processes are investigated. Algorithms for tray-by-tray calculation are extended for columns with multiple heterogeneous trays in both sections. Minimum energy calculations and methods for feasibility analysis are investigated for such systems. Based on this research, a new conceptual design method for heterogeneous distillation with one feed and two product streams is developed and tested on several examples showing different residue curve map topology.

Keywords:
Heterogeneous azeotropic distillation; hybrid separation process; shortcut method; boundary value method; rectification body method; continuous distillation regions; ethanol purification.

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