Control of Fuel Combustion in Boilers (eBook)

Introduction 6
Contents 8
List of Abbreviations 10
List of Symbols 11
1 Methods and Means for the Control of the Fuel Combustion Process 12
1.1 Features of the Formation of Heat Balance of the Boiler 12
1.2 Approaches to the Formation of Air-Fuel Mixture in the Burner Devices 16
1.3 Methods for Controlling the Composition of Flue Gases of Boilers 26
1.4 Analysis of Control Systems for the Combustion Process 31
1.5 Current State of Boiler Units of Municipal and Industrial Power System and Ways of Their Modernization 36
References 41
2 Research of the Process of Fuel Combustion in Boilers 45
2.1 Features of Thermophysical Processes in the Working Area of the Boiler 45
2.2 Modeling of the Air-Fuel Path of the Boiler 47
2.3 Features of the Formation of Stoichiometric Air-Fuel Mixtures 55
2.4 Methods for Improving the Accuracy of Determining the EAC 59
2.5 Method for Determining the VOC in the Air 65
References 69
3 Hardware and Software Implementation of Modules of the System of the Fuel Combustion Control Process 71
3.1 Generalized Structure of the Combustion Control System in Boilers 71
3.2 Means of Monitoring the Process of Fuel Combustion Based on Oxygen Sensor 76
3.3 Formation of AFM of a Given Composition Based on Frequency Regulators 80
3.4 Software for Combustion Control System 91
References 96
4 Experimental Research of a Computer System for the Control of the Fuel Combustion Process 98
4.1 Results of Experimental Studies of VOC Changes 98
4.2 Metrological Evaluation of Experimental Studies of VOC Changing 102
4.3 Forecasting of VOC in the Air 111
4.4 Results of Experimental Studies of a Computerized System for Controlling the Fuel Combustion Process 118
4.5 Ecological Analysis of System Operation 124
4.6 Economic Analysis of System Efficiency 125
References 131