Abstract
For sequences involving (i) two-product columns and (ii) partially thermally and materially coupled complexes, algorithms are developed for the exhaustive generation of flowsheets for extractive distillation of n-component mixtures with a single binary azeotrope. The algorithms are aimed at the subsequent development of suitable software. On the basis of the procedure proposed for the construction of extractive distillation flowsheets, catalogues of all flowsheets at n = 2, 3, 4 for case (i) are created. Three recurrence relations are derived for estimating the total number of flowsheets at a specified n, depending on the location of an azeotrope-forming pair in the initial component sequence, when arranged in order of increasing boiling temperatures: at the beginning, end, or strictly inside it.
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Original Russian Text © M.I. Skvortsova, A.V. Timoshenko, D.G. Rudakov, 2011, published in Teoreticheskie Osnovy Khimicheskoi Tekhnologii, 2011, Vol. 45, No. 6, pp. 653–668.
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Skvortsova, M.I., Timoshenko, A.V. & Rudakov, D.G. Synthesis of partially thermally coupled extractive distillation flowsheets. Theor Found Chem Eng 45, 842–857 (2011). https://doi.org/10.1134/S0040579511060157
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DOI: https://doi.org/10.1134/S0040579511060157