Dynamic modeling and simulation of an industrial chemical reactor

Modeling is the entire necessary step for the formulation of a mathematical model that can be developed from the physical laws governing the process. Modeling can be based on a knowledge model or a black box model. Nevertheless, black box modeling is not practice en real time operation; i.e the signal controls are not rich enough to cover all operating modes. So, in industries, a simulator of process serves as powerful tool for optimizing the operating set points and for simulating the different modes off line. That's why we make the modeling of a chemical reactor which is among the most delicate processes to model. The design of chemical reactor depends on the following factors: size of reactor, nature of reagents, temperature of reactor and rate of chemical reaction. This paper deals with basic simulation studies of a chemical reactor of production of phosphoric acid. The mathematical dynamic model is developed from material and energy balances. Numerical mathematics is used for steady state and dynamic analysis which is usually presented by the set of differential equations. A simulation is curried out using "MATLAB". A validation of the model is done through a database taken from industrial process.