Synthesizing alternative sequences via a P-graph-based approach in azeotropic distillation systems

Gangyi Feng, L. T. Fan, F. Friedler

Research output: Contribution to journalConference article

19 Citations (Scopus)


The present work proposes a P-graph based approach capable of systematically generating all combinatorially feasible alternative sequences for both continuous and batch azeotropic distillation systems when the feeds, products, and operating units and their concomitant intermediate materials are known. To facilitate synthesis, a highly effective method has been established to identify processing or operating units necessary for constructing azeotropic-distillation systems by means of first principles and logical sequencing of such units. The materials represented in the space of the residue curve map are partitioned into lumped materials bounded by thermodynamic boundaries and pinches, e.g. distillation boundaries and liquid-liquid phase equilibrium envelope. Subsequently, the operating units are identified on the basis of these lumped materials. The proposed approach automatically discards the operating units and intermediates whose inclusion will lead to infeasible sequences. The efficacy of the approach is illustrated with a realistic example. Copyright (C) 2000 Elsevier Science Ltd.

Original languageEnglish
Pages (from-to)639-643
Number of pages5
JournalWaste Management
Issue number8
Publication statusPublished - Dec 1 2000
Event2nd Conference on Process Integration Modelling and Optimisation for Energy Saving and Pollution Reduction (PRES'99) - Budapest, Hung
Duration: May 31 1999Jun 2 1999

ASJC Scopus subject areas

  • Waste Management and Disposal

Fingerprint Dive into the research topics of 'Synthesizing alternative sequences via a P-graph-based approach in azeotropic distillation systems'. Together they form a unique fingerprint.

  • Cite this