Synthesis of Ternary Homogeneous Azeotropic Distillation Sequences: Entrainer Selection
Abstract
This paper presents a methodology for automatic selection of entrainers for separating binary azeotropic mixtures using homogeneous azeotropic distillation. A new classification system for ternary mixtures based on the termini of distillation boundaries and the type (stability) of products and azeotropes is proposed. The new characterisation system is able to link candidate entrainers to flowsheet structures which can facilitate the separation. Existing entrainer selection criteria are extended to accommodate other promising entrainers, including light, intermediate and heavy-boiling entrainers.References
2. Doherty, M.F. and Caldarola, G.A., (1985), Design and synthesis of homogeneous azeotropic distillations. 3. The sequencing of columns for azeotropic and extractive distillation, Ind. Eng. Chem. Fundam., 24, pp. 474-485.
3. Doherty, M.F. and Perkins, J.D., (1979), On the dynamics of distillation processes-III: The topological structure of ternary residue curve maps, Chem. Eng. Sci., 34, pp.1401-1414.
4. Fidkowski, Z.T., Malone, M.F. and Doherty, M.F., (1993b), Computing azeotropes in multicomponent mixtures, Comp. Chem, Eng., 17 (12), pp. 1141-1155.
5. Foucher, E.R.; Doherty, M.F. and Malone, M.F., (1991), Automatic screening of entrainers for homogeneous azeotropic distillation, Ind. Eng. Chem. Res., 30, pp. 760-772.
6. Gaw, W. J., and Swinton, F. L., (1966), Occurence of a Double Azeotrope in the Binary System Hexafluorobenzene – Benzene, Nature, 212, 283.
7. Gmehling, J. and Möllmann, C., (1998), Synthesis of distillation processes using thermodynamic models and the Dortmunder data bank, Ind. Eng. Chem. Res., 37 (8), pp. 3112-3123
8. Knapp, J.P. and Doherty, M.F., (1992), A new pressure-swing distillation process for separating homogeneous azeotropic distillation, Ind. Eng. Chem. Res., 31, pp. 346-357.
9. Laroche, L., Bekiaris, N., Andersen, H.W. and Morari, M., (1991), Homogeneous azeotropic distillation: Comparing entrainers, Can. J. Chem. Eng., 69, pp. 1302-1318
10. Laroche, L., Bekiaris, N., Andersen, H.W. and Morari, M., (1992), The curious behaviour of homogeneous azeotrope distillation: Implications for entrainer selection, AIChE J., 38, pp. 1309-1328.
11. Levy, S.G.,Van Dongen, D. B., Doherty, M. F., (1985), Design and Synthesis of Homogeneous Azeotropic Distillation: 2. Minimum Reflux Calculations for Nonideal and Azeotropic Columns, Ind. Eng. Chem. Fund.,34, pp. 463-474
12. Matsuyama, H. And Nishimura, H., 1977, Topological and thermodynamic classification of vapour-liquid equlibria, J. Chem. Eng. Japan, 10(3), 181.
13. Reid, R.C., Prausnitz, J.M. and Poling, B.E., (1987), The properties of gases and liquids, 4th edition, McGraw-Hill, Inc., New York.
14. Rooks, R.E., Julka, V., Doherty, M.F. and Malone, M.F., (1998), Structure of Distillation Regions for Multicomponent Azeotropic Mixtures, AIChE J., 44 (6), pp. 1382-1391.
15. Safrit, B. T. and Westerberg, A.W., (1997), Algorithm for generating the distillation regions for multicomponent azeotropic mixtures, Ind. Eng. Chem. Res., 36, pp. 1827-1840.
16. Stichlmair, J.G. and Fair, J., (1998), Distillation: Principles and Practices, Wiley-VCH, New York.
17. Stichlmair, J.G., Fair, J.R. and Bravo, J.L., (1989), Separation of azeotropic mixtures via enhanced distillation, Chem. Eng. Prog., 1989, 85 (1), pp. 63-69
18. Stichlmair, J., Herguijuela, J.R, (1992), Separation regions and processes of zeotropic and azeotropic ternary distillation, AIChE J., 38, pp. 1523-1535.
19. Thong, D. Y-C., (2000a), Multicomponent Azeotropic Distillation Design, PhD Thesis, UMIST, Manchester. Thong, D. Y-C., (2000b), Research update on two-feed distillation, unpublished paper, UMIST, Manchester, UK.
20. Van Dongen, D.B. and Doherty, M.F., (1985), Design and synthesis of homogeneous azeotropic distillations. 1. Problem formulation for a single column, Ind. Eng. Chem. Fundam., 24, pp. 454-463.
21. Wahnschafft, O.M.; Koehler, J.W., Blass, E. column, Ind. Eng. Chem. Fundam., 24, pp. 454-463.
22. Wahnschafft, O.M.; Koehler, J.W., Blass, E.And Westerberg, A.W., (1992), The product composition regions of single-feed azeotropic distillation columns, Ind. Eng. Chem. Res., 31, pp. 2345-2362.
23. Wahnschafft, O.M. And Westerberg, A.W., (1992), The product composition regions of azeotropic distillation columns. 2. Separability in two-feed columns and entrainer selection, Ind. Eng. Chem. Res., 32, pp. 1108-1120.
24. Widagdo, S. and Seider, W.D., (1996), Azeotropic distillation, AIChE J., 42, pp. 96-130.
Copyright holder for articles is ASEAN Journal of Chemical Engineering. Articles published in ASEAN J. Chem. Eng. are distributed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.
Authors agree to transfer all copyright rights in and to the above work to the ASEAN Journal of Chemical Engineering Editorial Board so that the Editorial Board shall have the right to publish the work for non-profit use in any media or form. In return, authors retain: (1) all proprietary rights other than copyright; (2) re-use of all or part of the above paper in their other work; (3) right to reproduce or authorize others to reproduce the above paper for authors’ personal use or for company use if the source and the journal copyright notice is indicated, and if the reproduction is not made for the purpose of sale.