Proposal Detailed Record

Title:	Separation of acetic acid and water by complex extractive distillation
Authors:	Lei, Zhiganga; Li, Chengyuea; Li, Yingxiaa; Chen, Biaohuaa
Affiliations:	a. The Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Education, Beijing University of Chemical Technology, Box 35, Beijing 100029, China
Keywords:	Complex extractive distillation; Acetic acid; Water; Tributylamine; Equilibrium stage model
Abstract (English):	A new separation method, complex extractive distillation, was put forward in this work for separating acetic acid and water. Tributylamine was selected as the separating agent. The reversible chemical interaction between acetic acid and tributylamine was verified through infrared spectra (IR) and mass chromatogram (MS) technique. The mathematics models of equilibrium (EQ) stage with and without incorporating chemical equilibrium equations were, respectively, established to simulate the extractive distillation column. From the comparison of simulated results with experimentally observed results, it was concluded that the EQ stage model was accurate whether chemical equilibrium equation was incorporated or not because the chemical equilibrium constant was small under the operation condition.
Publisher:	Elsevier Science
Language of Publication:	English
Item Identifiers:	10.1016/S1383-5866(03)00208-9 S1383-5866(03)00208-9
Publication Type:	Article
ISSN:	1383-5866
Citations:	Helsel, R.W., “Removing carboxylic acids from aqueous wastes” Chem. Eng. Prog. 1977 pp. 55-59 Golob, J.; Grilc, V.; Zadnik, B., “Extraction of acetic acid from dilute aqueous solutions with trioctylphosphine oxide” Ind. Eng. Chem. Process Des. Dev. 1981 pp. 435-440 Kuo, Y.; Gregor, H.P., “Acetic acid extraction by solvent membrane” Sep. Sci. Technol. 1983 pp. 421-440 L. Berg, Dehydration of acetic acid by extractive distillation, US 5167774 (1992). L. Berg, Dehydration of acetic acid by extractive distillation, US 4729818 (1987). Dil, B.; Yang, Y.Y.; Dai, Y.Y., “Extraction of acetic acid from dilution solution by reversible chemical complexation” J. Chem. Eng. Chin. Univ. 1993 pp. 174-179 Ma, J.H.; Sun, S.X., “Extraction of acetic acid with primary amine N1923” Chin. J. Appl. Chem. 1997 pp. 70-73 L.L. Chen, Solvent Handbook, Chemical Industry Press, Beijing, 1997. Lee, J.H.; Dudukovic, M.P., “A comparison of the equilibrium and non-equilibrium models for a multi-component reactive distillation column” Comput. Chem. Eng. 1998 pp. 159-172 Bibliographic Page Full Text Taylor, R.; Krishna, R., “Modelling reactive distillation” Chem. Eng. Sci. 2000 pp. 5183-5229 Bibliographic Page Full Text Baur, R.; Higler, A.P.; Taylor, R.; Krishna, R., “Comparison of equilibrium stage and non-equilibrium stage models for reactive distillation” Chem. Eng. J. 2000 pp. 33-47 Bibliographic Page Full Text Baur, R.; Taylor, R.; Krishna, R., “Dynamic behaviour of reactive distillation columns described by a non-equilibrium stage model” Chem. Eng. Sci. 2001 pp. 2085-2102 Bibliographic Page Full Text Komatsu, H., “Application of the relaxation method of solving reacting distillation problems” J. Chem. Eng. Jpn. 1977 pp. 200-205 Komatsu, H.; Holland, C.D., “A new method of convergence for solving reacting distillation problems” J. Chem. Eng. Jpn. 1977 pp. 292-297 Jelinek, J.; Hlavacek, V., “Steady-state countercurrent equilibrium stage separation with chemical reaction by relaxation method” Chem. Eng. Commun. 1976 pp. 79-85 J.S. Tong, The Fluid Thermodynamics Properties, Petroleum Technology Press, Beijing, 1996. R.C. Reid, J.M. Prausnitz, T.K. Sherwood, The Properties of Gases and Liquids, McGraw-Hill, New York, 1987.