The numerical modelling and process simulation for the fault diagnosis of rotary kiln incinerator

Abstract

The numerical modelling and process simulation for the fault diagnosis of rotary kiln incinerator were accomplished. In the numerical modelling, two models applied to the modelling within the kiln are the combustion chamber model including the mass and energy balance equations for two combustion chambers and 3D thermal model. The combustion chamber model predicts temperature within the kiln, flue gas composition, flux and heat of combustion. Using the combustion chamber model and 3D thermal model, the production-rules for the process simulation can be obtained through interrelation analysis between control and operation variables. The process simulation of the kiln is operated with the production-rules for automatic operation. The process simulation aims to provide fundamental solutions to the problems in incineration process by introducing an online expert control system to provide an integrity in process control and management. Knowledge-based expert control systems use symbolic logic and heuristic rules to find solutions for various types of problems. It was implemented to be a hybrid intelligent expert control system by mutually connecting with the process control systems which has the capability of process diagnosis, analysis and control.

Keywords

Combustion Chamber Model 3D Thermal Model Expert Control System Rotary Kiln

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References

Ayyub, B. M & McCuen, R. H. (1996) Numerical Methods for Engineers, Prentice Hall International Incorporation., USA, pp.223-227.

Rao, M. , Cho, W. S. & Jiang, T. T. (1987) Proceedings of SCSC, Montreal, Canada.

Boateng, A. A. & Barr, P. V. (1996) A Thermal Model for the Rotary Kiln Including Heat Transfer within the Bed, International Journal of Heat Mass Transfer, 39, 10, pp.2131-2147.

Boateng A. A. & Barr, P. V. (1996) Modelling of Particle Mixing and Segregation in the Transverse Plane of a Rotary Kiln, Chemical Engineering Science, 51, 17, pp.4167-4181.

Barr, P. V. , Brimacombe, J. K. & Watkinson, A. P. (1989) A Heat-transfer Model for the Rotary Kiln-II. Development of the Cross-section Model, Met. Trans., B, 20B, pp.403-419.

Oppellt, E. T. (1987) JAPCA 37, pp.558-586.

Carrico, M. A. , Girard, J. E. & Jones, J. P. (1989) Building Knowledge Systems, McGraw-Hill Book Corporation.

Adey, R. A. , Rzevski G & Sunol, A. K. (1996) Proceedings of the International Conference. AIENG 96, Computational Mechanics Publications, pp.17-18.

Lee, J. K. , Liebowitz, J. & Chae, Y. M. (1996) Proceedings of the 3rd World Congress on Expert Systems, Cognizant Communication Corporation Seoul, Korea, pp.993-999.

10.

Tong, R. M. , Beck, M. B. & Latten, A. (1980) Automatica, 16, pp.695-701.