Boiler unit modeling by the channel “flue gas temperature in the furnace rotary chamber- flue gas flow”

Abstract

The purpose of the study is to develop the models that take into account the dynamics of the object. Dynamic models provide more accurate prediction and control of the process as compared with classical automatic control systems. This study deals with the improvement of the control methods of the air-gas path of a boiler unit under steam production. The article considers the application of the well-known method of G. Box and G. Jenkins for steam production process identification. The subject of investigation is a boiler unit that is a very complex and interconnected system described as a dynamic stochastic object with uncontrolled perturbation influences. Using experimental and statistical methods a mathematical model has been obtained that allows the determination of the influence degree of the flue gas temperature in the furnace rotary chamber of the drum boiler on the flue gas flow. The conducted researches resulted in obtaining the models allowing to evaluate the effect of the temperature of the flue gases in the furnace rotary chamber on the left and right sides of the flue gas flow of the boiler unit.