Boilers and Burners

ISBN-13: 9780387987033 / Angielski / Twarda / 1999 / 566 str.

Prabir Basu; Louis Jestin; Cen Kefa

Opis

A joint effort of three continents, this book is about rational utilization of the fossil fuels for generation of heat or power. It provides a synthesis of two scientific traditions: the high-performance, but often proprietary, Western designs, and the elaborate national standards based on less advanced Eastern designs; it presents both in the same Western format. It is intended for engineers and advanced undergraduate and graduate students with an interest in steam power plants, burners, or furnaces. The text uses a format of practice based on theory: each chapter begins with an explanation of a process, with basic theory developed from first principles; then empirical relationships are presented and, finally, design methods are explained by worked out examples. It will thus provide researchers with a resource for applications of theory to practice. Plant operators will find solutions to and explanations of many of their daily operational problems. Designers will find this book ready with required data, design methods and equations. Finally, consultants will find it very useful for design evaluation.

Spis treści

1 Introduction.- 1-1 Principles of Boiler Operation.- 1-2 Classification of Boilers.- 1-3 Description of Boilers.- References.- 2 General Design Considerations.- 2-1 Boiler Specifications.- 2-2 Design Steps.- References.- 3 Fuel and Combustion Calculations.- 3-1 Features of Fuel.- 3-2 Stoichiometric Calculations.- 3-3 Enthalpy Calculation of Air and Combustion Products.- 3-4 Heat Balance.- 3-5 Generation of SO2and NOx.- Nomenclature.- References.- 4 Coal Preparation Systems for Boilers.- 4-1 Coal Preparation Systems.- 4-2 Pulverizing Properties of Coal.- 4-3 Pulverizing Air System.- 4-4 Size-Reducing Machines.- 4-5 Other Components for Coal Preparation Systems.- 4-6 Design of Coal Preparation System for Pulverized Coal Boilers.- 4-7 Fuel Feeding in Fluidized Bed Boilers.- Nomenclature.- References.- 5 Design of Oil Burners.- 5-1 Design of Oil Supply System.- 5-2 Oil Atomizers.- 5-3 Air Registers.- 5-4 Design Principles of Oil Fired Boilers.- Nomenclature.- References.- 6 Boiler Furnace Design Methods.- 6-1 General Design Principles.- 6-2 Flame Emissivity.- 6-3 Heat Transfer Calculations for the PC Boiler Furnace.- 6-4 Water Wall Arrangement.- 6-5 Fouling and Thermal Efficiency Factors for Water Wall Tubes.- 6-6 Temperature Field CoefficientM.- 6-7 Furnace Emissivity.- 6-8 Distribution of Heat Load in Furnace.- Nomenclature.- References.- 7 Convective Heating Surfaces.- 7-1 Design of Superheater and Reheater.- 7-2 Temperature Control in Superheater and Reheater.- 7-3 Adjustment of Heat Absorption in Superheater and Reheater..- 7-4 Economizer.- 7-5 Air Heater.- 7-6 Arrangement of Back-Pass Heating Surfaces.- 7-7 Heat Transfer Calculations for Convective Heating Surfaces.- 7-8 Design Methods of Convection Heating Surfaces.- Nomenclature.- References.- 8 Swirl Burners.- 8-1 Design of a Swirl Burner.- 8-2 Flow Resistance in Swirl Burners.- 8-3 Examples of Swirl Burners.- 8-4 Arrangement of Multiple Swirl Burners.- 8-5 Design Procedure of Swirl Burners.- Nomenclature.- References.- 9 Design of Novel Burners.- 9-1 Types of PC Burners.- 9-2 PC Burner With Blunt Body.- 9-3 Precombustion Chamber Burner.- 9-4 Boat Burner.- 9-5 Co-Flow Jet Burner With High Differential Velocity.- 9-6 Counter-Flow Jet Burner.- 9-7 Dense and Lean Phase PC Burner.- 9-8 Down-Shot Flame Combustion Technique.- 9-9 Low NOxBurner.- Nomenclature.- References.- 10 Tangentially Fired Burners.- 10-1 General Descriptions.- 10-2 Design of Burners With Peripheral Air.- 10-3 Design of Tilting Burners.- 10-4 Burners for Bituminous Coal.- 10-5 Anthracite and Lean Coal Fired PC Burner.- 10-6 Brown Coal Fired Direct Burner.- 10-7 Multifuel Burner.- 10-8 Design Methods for Tangentially Fired Boilers.- 10-9 Example of Burner Design.- Nomenclature.- References.- 11 Fluidized Bed Boilers.- 11-1 Fluidized Bed Boiler.- 11-2 Major Features of Fluidized Bed Boilers.- 11-3 Basics of Fluidized Beds.- 11-4 Bubbling Fluidized Bed Boilers.- 11-5 Circulating Fluidized Bed Boilers.- 11-6 Distributor Plates.- 11-7 Loop Seals.- 11-8 Gas—Solid Separators.- Nomenclature.- References.- 12 Steam—Water Circulation in Boiler.- 12-1 Natural Circulation System.- 12-2 Calculations for Simple and Complex Tube Circuits.- 12-3 Two-Phase Flow Resistance.- 12-4 Height of Economizer Section in the Riser.- 12-5 Worked-Out Example.- Nomenclature.- References.- 13 Forced Circulation for Supercritical or Subcritical Boilers.- 13-1 General Description.- 13-2 Design Principle of Forced Circulation Boiler.- 13-3 Features of Forced Circulation Boilers.- 13-4 Supercritical Boilers.- 14 Corrosion and Fouling of Heat Transfer Surfaces.- 14-1 High-Temperature Corrosion of External Surfaces.- 14-2 Prevention of High-Temperature Corrosion.- 14-3 Low-Temperature Corrosion on External Surfaces.- 14-4 Corrosion and Scaling of Internal Surfaces.- 14-5 Fouling and Slagging.- 14-6 Calculation of Soot and Ash Deposition.- 14-7 Prediction of Slagging Potential.- 14-8 Design Measure for Reduction of Fouling and Slagging.- Nomenclature.- References.- 15 Erosion Prevention in Boilers.- 15-1 Theory of Erosion of Heating Surfaces.- 15-2 Worked-Out Example.- 15-3 Factors Influencing Tube Erosion.- 15-4 Analyses of Erosion of Tube Banks in Cross-Flow.- 15-5 Permissible Gas Velocity for Safe Operation.- 15-6 Erosion Protection for the Economizer, Reheater, and Superheater.- 15-7 Erosion in Tubular Air Heaters.- 15-8 Erosion in Fluidized Bed Boilers.- Nomenclature.- References.- 16 Pressure Drop in Gas and Air Ducts.- 16-1 Draft Systems.- 16-2 Pressure Drop in Air and Gas Duct Systems.- 16-3 Pressure Drop Across Heating Surfaces.- 16-4 Pressure Drop in Natural Draft Gas Path.- 16-5 Pressure Drop Through Air Ducts.- 16-6 Selection of Fans.- 16-7 Pressure Drop Through Water or Steam Tubes.- Nomenclature.- References.- 17 Mechanical Design of Pressure Parts.- 17-1 Selection of Materials.- 17-2 Important Mechanical Properties of Various Materials.- 17-3 Fundamental Metallurgical Concepts to Improve Steel Properties.- 17-4 Design Methods.- 17-5 Thickness (Scantling) Calculations.- Nomenclature.- References.- 18 Tables of Design Data.- Table 18-1 Specific heat of air, flue gas and ash at atmospheric pressure.- Table 18-2 Some physical properties of iron, metal, and selected steels.- Table 18-3 Linear thermal expansion of steel.- Table 18-4 Specific heat capacity of steel.- Table 18-5 Electrical resistivity of steel.- Table 18-6 Thermal conductivity of steel.- Table 18-7 Density, heat capacity, and heat conductivity for metals.- Table 18-8 Thermal properties of the saturated water and steam (arranged by temperature).- Table 18-9 Thermal properties of the saturated water and steam (arranged by pressure).- Table 18-10 Thermal properties of unsaturated water and superheated steam at different pressures.- Table 18-11 Conversion factors.