Hi, anyone can assist me on this for my design project. I am going to design a DC to purify acrylic acid, acetic acid and water. The boiling point of acetic acid and acrylic acid are too closed where I cant use simple distillation to separate. Will it be ok if I design vacuum distillation if I don't want to use azeotropic distillation?
Please go through : https://patentimages.storage.googleapis.com/50/2e/06/87337bcc1bb4b4/EP0695736B1.pdf
Some of the most relevant papers on removing/concentrating/recovering acetic acid from dilute aqueous solutions are signalled: D.F. Othmer, "Acetic Acid Recovery Methods", Chem. Eng. Prog., 54(7) 1958, 48-59; J.M. Wardell, C.J. King, “Solvent equilibriums for extraction of carboxylic acids from water”, J. Chem. Eng. Data, 23(2) 1978, 144-148; R.M. Busche, E.J. Shimshick, R.A. Yates, “Recovery of acetic acid from dilute acetate solution”, Biotech. Bioeng. Symp., Nº 12, 1982, 249-262; W.V. Brown, "Economics of Recovering Acetic Acid", Chem. Eng. Prog., 59, October 1963, 65-68; P. Eaglesfield, B.K. Kelly, J.F. Short, "Recovery of Acetic Acid from Dilute Aqueous Solution by Liquid-Liquid Extraction – Part I", Ind. Chemist, 29, 1953, 147-151.
Some relevant patents on the same topic: G. Mariansky, K. Carlin, D.W. Verser (assignee: ZeaChem Inc.), "Recovery of organic acids", US 8,143,444 B2 (Mar. 27, 2012); D.W. Verser, T.J. Eggeman (ZeaChem Inc.), idem, US 2005/0256337 A1 (Nov. 17, 2005); idem, US 2012/0112127 A1 (May 10, 2012); B. Urbas (CPC Int. Inc.), “Recovery of acetic acid from a fermentation broth”, US 4,405,717 (Sep. 20, 1983); idem, "Recovery of organic acids from a fermentation broth", US 4,444,881 (Apr. 24, 1984); R.A. Yates (E.I. du Pont de Nemours and Comp.), “Removal and concentration of lower molecular weight organic acids from dilute solutions”, US 4,282,323 (Aug 4, 1981).
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