A Practical Approach to the Simulation of Small Industrial Problems

Summary

The paper deals with the problems associated with NaOH dissolution simulation, solution of them and the applicability of the simulation scheme. First the mathematical model of the exotherm reaction in the batch reactor including some nonlinearities and mathematical model of the cooling system are given. The problems we met during the preparation of the problem for simulation were mainly the unacquaintance of one constant in the Arrhenius equation and the wide range of time constants of the reactor and cooling system. Using this approach the given problem is simulated first on the analog computer, where the chosen model can be verified and the unknown constants can be estimated by means of some experimental results, respectively. Once the model is well known, the digital simulation, using standard simulation subroutines enables the simple documentation of results and simple storage of programs. By this approach the advantages of analog and digital simulation are employed and in addition the simple verification of the used programming techniques is enabled.