Stirred tanks are widely used in the process industry, often to carry out complex chemical reactions. In many of such cases the perfect mixing hypothesis is not applicable for modelling purposes, and more detailed modelling approaches are required in order to accurately describe the reactor behaviour. In this work a fully predictive modelling approach, based on Computational Fluid Dynamics, is developed. Model predictions are compared with original experimental data obtained in un unbaffled stirred vessel with a parallel-competitive, mixing sensitive reaction scheme. Notably, satisfactory results are obtained at all injection rates with no recourse to micro-mixing model, thus confirming the major role played by macro-mixing in the investigated system.

Grisafi, F., Scargiali, F., Brucato, A. (2008). CFD simulation of a mixing-sensitive reaction in unbaffled vessels. In Prof. Sauro Pierucci (a cura di), Chemical Engineering Greetings to Prof. E. Ranzi (pp. 251-258). milano : Reed Bisiness Information, Milano.

CFD simulation of a mixing-sensitive reaction in unbaffled vessels

GRISAFI, Franco;SCARGIALI, Francesca;BRUCATO, Alberto
2008-01-01

Abstract

Stirred tanks are widely used in the process industry, often to carry out complex chemical reactions. In many of such cases the perfect mixing hypothesis is not applicable for modelling purposes, and more detailed modelling approaches are required in order to accurately describe the reactor behaviour. In this work a fully predictive modelling approach, based on Computational Fluid Dynamics, is developed. Model predictions are compared with original experimental data obtained in un unbaffled stirred vessel with a parallel-competitive, mixing sensitive reaction scheme. Notably, satisfactory results are obtained at all injection rates with no recourse to micro-mixing model, thus confirming the major role played by macro-mixing in the investigated system.
Settore ING-IND/25 - Impianti Chimici
Grisafi, F., Scargiali, F., Brucato, A. (2008). CFD simulation of a mixing-sensitive reaction in unbaffled vessels. In Prof. Sauro Pierucci (a cura di), Chemical Engineering Greetings to Prof. E. Ranzi (pp. 251-258). milano : Reed Bisiness Information, Milano.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/61836
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