Micromixing effects in precipitation - Application of CFD

• Autorzy: Bałdyga J. , Orciuch W. , Makowski Ł.
• Języki publikacji: EN

Abstrakty

EN

The process of precipitation of solid products from two liquid ionic solutions is interpreted theoretically and simulated using PDF closure procedure developed earlier by the authors. The process is described using statistically averaged balance equations including species balances for the reactants and the population balance for particles. The method enables the particle size to be predicted and compared with the experimental data. The criteria for either including or neglecting micromixing effects in modeling are presented and discussed.

Słowa kluczowe

EN

CFD; micromixing; population balance; precipitation; selectivity

PL

CFD; mikromieszanie; mieszanie; bilans populacji; precypitacja

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2006
• Tom: Vol. 8, nr 1
• Strony: 4--11
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Bałdyga J.

autor

Orciuch W.

autor

Makowski Ł.

• Warsaw University of Technology, Faculty of Chemical and Process Engineering, ul. Warynskiego 1, 00-645 Warszawa,

Bibliografia

• (1) Bałdyga J., Jasińska M., Orciuch W.: Barium sulphate agglomeration in a pipe -an experimental study and CFD modelling, Chem. Eng. Technol, 2003, 26, 334.
• (2) Stręk F.: Mieszanie i mieszalniki, Wydawnictwo Naukowo-Techniczne, Warszawa, 1981.
• (3) Nagata S.: Mixing Principles and applications, Kodansha LTD., John Wiley & Sons, 1975.
• (4) Bałdyga J.: Turbulent mixer model with application to homogeneous, instantaneous chemical reactions, Chemical Engineering Science, 1989, 44, 1175.
• (5) Bałdyga J., Orciuch W.: Closure problem for precipitation, Transactions of the Institution of Chemical Engineering, 1997, 75A, 160.
• (6) Bałdyga J., Bourne J. R.: Turbulent mixing and chemical reactions, Wiley, Chichester, 1999.
• (7) Bałdyga J., Makowski Ł.: CFD modelling of mixing effects on the course of parallel chemical reactions carried out in a stirred tank, Chem. Eng. Technol., 2004, 27, 225.
• (8) Podgórska W.: Effects of mixing on precipitation, in Polish, Ph.D Thesis, Warsaw University of Technology, 1993.
• (9) Vicum L., Mazzotti M., Bałdyga J.: Applying thermodynamic model to the non-stoichiometric precipitation of barium sulfate, in proceedings of the 15th International Symposium on Industrial Crystallization, Sorento, Italy, 2002.
• (10) Bromley L. A.: Thermodynamic properties of strong electrolytes in aqueous solutions, A.I.Ch.E. J., 1973, 19, 313.
• (11) Felmy A. R., Rai D., Amonette J. E.: The solubility of barite and celesite in sodium sulfate: evolution of thermodynamics data, Journal of Solution Chemistry, 1990, 19, 175.
• (12) Bałdyga J., Podgórska W., Pohorecki R.: Mixing-precipitation model with application to double feed semibatch precipitation, Chem. Eng. Sci., 1995, 50, 1281.