DL/T 5240-2010 火力发电厂燃烧系统设计计算技术规范 Technical code for design and calculation of combustion system o【2025|PDF|Epub|mobi|kindle电子书版本百度云盘下载】

DL/T 5240-2010 火力发电厂燃烧系统设计计算技术规范 Technical code for design and calculation of combustion system oPDF格式电子书版下载

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1 Scope1

2 Normative References2

3 Terms,Definitions,and Symbols4

3.1 Terms and Definitions4

3.2 Symbols14

4 General Provisions15

5 Type and Quality of Coal19

5.1 Design Coal and Check Coal19

5.2 Coal Quality Analysis Items20

5.3 Verification and Confirmation of Coal Quality Analysis Data23

5.4 Limestone/Lime Analysis Data23

6 Evaluation of Coal Quality Level25

6.1 Coal Type and Coal Quality Level25

6.2 Evaluation Indices of Coal Quality29

7 Selection of Air and Flue Gas System for Boiler Units34

7.1 Air and Flue Gas System34

7.2 System for Heating the Inlet Air of Air Preheater37

7.3 Gas Exhaust System of Flue Gas Treatment Process38

8 Thermodynamic Calculation of Combustion System40

8.1 General Requirements40

8.2 Original Data40

8.3 Boiler Efficiency45

8.4 Calculation of Fuel Consumption47

8.5 Calculation of Amount of Air Required for Burning 1 kg Coal,and Composition of the Produced Flue Gas51

8.6 Temperature and Pressure of Air and Flue Gas58

8.7 Balancing and Coordination of Air Flow within Combustion System62

8.8 Calculation of Air and Flue Gas Flows at Various Positions of Boiler Unit70

8.9 Calculation of Dew Points of Air and Flue Gas72

8.10 Calculation of Carbon Dioxide Emission Flow77

9 Flue Gas Flow and Thermodynamic Calculation of Flue Gas Purification System79

9.1 Flue Gas Flow Calculation of Dry Dedusting System79

9.2 Flue Gas Flow and Thermodynamic Calculation of Wet or Semi-dry Purification System80

9.3 Thermodynamic Calculation of Wet FGD System82

9.4 Thermodynamic Characteristics Calculation for Humidified Flue Gas84

9.5 Temperature Drop Calculation of Stack88

10 Thermodynamic Calculations of the Preheater Inlet Air Heating System89

10.1 General Requirements89

10.2 Thermodynamic Calculation of Hot Air Recirculation Heating System90

10.3 Thermodynamic Calculation of Steam Air Heater System91

11 Aerodynamic Calculation of Combustion System94

11.1 General Requirements94

11.2 Design Optimization for the Through-flow Part of Flue Gas and Air Ducts96

11.3 Selection of Medium Flow Velocity in the Ducts of Combustion System96

11.4 Frictional Resistance of Flue Gas and Air Ducts97

11.5 Local Resistance of Flue Gas and Air Ducts99

11.6 Provisions for Simplified Calculation of Resistance of Flue Gas and Air Ducts107

11.7 Equipment Resistance109

11.8 Stack Draft109

11.9 Stack Resistance110

11.10 Calculation Resistance of the System and the Corrections113

12 Selection of Fans for Combustion System114

12.1 Selection of Types,Number,Air Flows,and Pressure Heads of Fans114

12.2 Selection of Speeds of Fans117

12.3 Calculation for Selecting Types of Fans118

12.4 Selection of Model Sizes of Fans124

12.5 Selection of Driving Mode and Regulation Mode of Fans125

12.6 Determination of Power of Fan Motors125

13 Selection of Precipitator127

13.1 General Requirements127

13.2 Electrostatic Precipitator127

13.3 Fabric Filters130

14 Type Selection of Stacks and Associated Calculations134

14.1 General Requirements134

14.2 Selection of Number and Heights of Stacks and Inner Diameters of Cylinder Outlets135

14.3 Determination of Upper Limit of the Exit Gas Flow136

14.4 Distribution Characteristics of Static Pressure within Inner Cylinders of Stack139

14.5 Type Selection and Design of Wet Stacks140

15 Furnace Safeguard Supervisory System and Explosion,Implosion,and Fire Prevention Measures of Combustion System141

15.1 General Requirements141

15.2 Implosion and Explosion Prevention Design Pressure of Furnace141

15.3 Implosion and Explosion Prevention Design Pressure of Air and Flue Gas System143

15.4 Provision of Implosion or Explosion Vents at Furnace and the Flue Ducts at Boiler Tail145

15.5 Fire Prevention Measures of Regenerative Air Preheaters and Flue Ducts at Boiler Tail145

15.6 Explosion Prevention Measures of Plasma Ignition System146

Appendix A（Normative） Symbols147

Appendix B（Normative） Thermal Calculation Method for Combustion System of Boilers Employing Limestone for Flue Gas Desulpherization153

Appendix C（Informative） References for Design Calculation of Combustion System157

Appendix D（Normative） Type Selection of Through Flow Components of Air and Flue Gas Ducts224

Appendix E（Normative） Analysis Methods for Coal Consumption and Thermal Parameters of Boilers When Raising the Inlet Air Temperature of Air Preheater241

Appendix F（Informative） Aerodynamic Characteristics Verification for Vibration Prevention and Noise Reduction of Air and Flue Gas System244