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Received March 8, 2004
Accepted June 10, 2004
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Direct Production of Crystalline Boric Acid through Heterogeneous Reaction of Solid Borax with Propionic Acid: Operation and Simulation
Chemical Engineering Department, Persian Gulf University, Bushehr 75169-13798, Iran
Korean Journal of Chemical Engineering, September 2004, 21(5), 956-962(7), 10.1007/BF02705577
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Abstract
The production of boric acid through reaction of borax crystals with propionic acid was investigated in batch mode. It was found that the product boric acid precipitates on the solid borax reactant. An increase in the coefficient of variation of feed crystals resulted in an increase in the time of completion of the reaction. A sharp interface model with variable bulk fluid concentration of liquid reactant was developed for simulation of the process. The analytical solution of the series of rate equations involving liquid film, solid boric acid layer and chemical reaction resistances was obtained, and a new method for simultneous determination of kinetic parameters was established. The chemical reaction and diffusion through the solid layer of boric acid were the rate controlling mechanisms. A numerical algorithm was also developed for predicting the fractional conversion of multisize borax crystals using the mono size kinetic parameters detemined according to the proposed analytical method.
References
Asai S, Konishi Y, Sasaki Y, "Mass Transfer between Fine Particles and Liquids in an Agitated Vessel," Third World Congress of Chemical Engineering, Tokyo, Japan, Part II, 428 (1986)
Baldi G, Conti R, Alaria E, Chem. Eng. Sci., 33, 21 (1978)
Coulter Electronics Ltd., "Coulter Counter Operating Manual," England (1993)
Froment GF, Bischoff KB, "Chemical Reactor Analysis and Design," 2st ed., Wiely, USA (1990)
Gerhartz W, "Ullmann's Encyclopedia of Industrial Chemistry," I, 123, Berlin, Germany (2001)
Jeffery GH, Bassett J, Mendham J, Denney RC, "Vogel's Textbook of Quantitative Chemical Analysis," 5th ed., Longman Group UK Limited (1989)
Levenspiel O, "Chemical Reaction Engineering," 3rd ed., John Wiley, USA (1998)
McKetta JJ, "Encyclopedia of Chemical Processing and Design," Marcel Dekker, USA (1999)
Pais FICC, Portugal AATG, Chem. Eng. Sci., 49(20), 3447 (1994)
Sepulveda JE, Herbst JA, AIChE Symposium Series, 74, 41 (1978)
ZareNezhad B, "A Feasibility Study on Using Propionic Acid for Production of Crystalline Boric Acid," Research Report No. 115, UMIST, Manchester, England (2003)
ZareNezhad B, Korean J. Chem. Eng., 20(1), 44 (2003)
Baldi G, Conti R, Alaria E, Chem. Eng. Sci., 33, 21 (1978)
Coulter Electronics Ltd., "Coulter Counter Operating Manual," England (1993)
Froment GF, Bischoff KB, "Chemical Reactor Analysis and Design," 2st ed., Wiely, USA (1990)
Gerhartz W, "Ullmann's Encyclopedia of Industrial Chemistry," I, 123, Berlin, Germany (2001)
Jeffery GH, Bassett J, Mendham J, Denney RC, "Vogel's Textbook of Quantitative Chemical Analysis," 5th ed., Longman Group UK Limited (1989)
Levenspiel O, "Chemical Reaction Engineering," 3rd ed., John Wiley, USA (1998)
McKetta JJ, "Encyclopedia of Chemical Processing and Design," Marcel Dekker, USA (1999)
Pais FICC, Portugal AATG, Chem. Eng. Sci., 49(20), 3447 (1994)
Sepulveda JE, Herbst JA, AIChE Symposium Series, 74, 41 (1978)
ZareNezhad B, "A Feasibility Study on Using Propionic Acid for Production of Crystalline Boric Acid," Research Report No. 115, UMIST, Manchester, England (2003)
ZareNezhad B, Korean J. Chem. Eng., 20(1), 44 (2003)
