Combustion of pulverised coal in a mixture of oxygen and recycled flue gas
Combustion of Pulverised Coal in a Mixture of Oxygen and Recycled Flue Gas focuses on a niche technology, combustion of coal in an oxygen rich environment, which is one approach to obtaining 'clean coal,' by making it easier to capture carbon that is released in the combustion process. To...
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| Formato: | Libro electrónico |
| Idioma: | Inglés |
| Publicado: |
Waltham, Massachusetts ; London, England :
Elsevier
2014.
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| Edición: | 1st ed |
| Materias: | |
| Ver en Biblioteca Universitat Ramon Llull: | https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009628454206719 |
Tabla de Contenidos:
- Half Title; Title Page; copyright; Contents; List of Figures; List of Tables; Acknowledgments; Nomenclature; 1 Introduction; 2 Coal Combustion Technologies; 2.1 Coal demand and coal reserves worldwide; 2.2 Coal utilisation processes; 2.3 Clean coal technologies; 2.3.1 Particulate control; 2.3.2 SO2 control; 2.3.3 NOx control; 2.3.4 Energy efficiency; 2.4 Carbon capture and storage technologies; 2.5 Summary of Chapter 2; Part I: Theoretical Aspects; 3 Theoretical Aspects of Burning Pulverised Fuel in CO2 Atmosphere; 3.1 Differences between air and oxyfuel combustion
- 3.2 Coal devolatilisation and particle ignition3.2.1 Devolatilisation mechanisms and features; 3.2.2 Coal particles ignition; 3.2.3 Effects of CO2 on coal devolatilisation and on particle ignition; 3.3 Heterogeneous reactions; 3.3.1 Factors influencing the reactivity of coal char; 3.3.2 Factors influencing the char reaction rates; 3.3.3 Char reaction rates in CO2/O2 atmosphere; 3.4 Combustion of volatiles in CO2/O2 atmosphere; 3.5 Emissions from combustion of pulverised coal in CO2/O2 atmosphere; 3.5.1 NOx; 3.5.2 SOx; 3.5.3 Ash composition; 3.6 Heat transfer in RFG/O2 atmosphere
- 3.6.1 Radiative properties of CO2 and water vapour3.6.2 Dry and wet recycle and the effect on the radiative heat transfer; 3.6.3 Dry and wet recycle and the effect on the convective heat transfer; 3.7 Summary of Chapter 3; 4 Mathematical Modelling and Model Validations; 4.1 Turbulent combustion modelling; 4.1.1 Diffusive fluxes; 4.1.2 Mean reaction rate; 4.2 Coal particle modelling; 4.2.1 Devolatilisation models; 4.2.2 Char burnout models; 4.3 Modelling of thermal radiation; 4.3.1 Radiative properties of walls; 4.3.2 Modelling of gas emissivity; 4.4 Summary of Chapter 4; Part II: Experiments
- 5 Gaseous Combustion in CO2/O2 Atmosphere5.1 Test facility for flameless gas combustion; 5.1.1 Experimental setup; 5.1.2 Oxyfuel tests; 5.2 Experimental results; 5.3 Numerical results; 5.4 Summary of Chapter 5; 6 Coal Combustion in CO2/O2 Atmosphere; 6.1 Oxycoal pilot-scale furnace; 6.2 Burner design and flame stability; 6.2.1 Development and tests of oxycoal swirl burners; 6.2.2 Measures for oxycoal swirl flame stabilisation; 6.3 Oxycoal swirl flame properties; 6.3.1 Measurement techniques; 6.3.2 Operating conditions; 6.3.3 Detailed in-flame measurements
- 6.3.4 Summary of the experimental results6.3.5 Validation of the numerical model; 6.4 Burner scale-up; 6.4.1 Burner aerodynamics; 6.5 Summary of Chapter 6; 7 NOx Emissions During Oxycoal Combustion; 7.1 Test conditions; 7.2 Influence of the excess oxygen ratio at the burner; 7.3 Influence of oxidiser O2 concentration on NOx emissions; 7.3.1 Influence of oxidiser O2 concentration in the primary stream; 7.3.2 Influence of oxidiser O2 concentration in the secondary stream; 7.4 Influence of primary stream momentum on NOx emissions; 7.5 Influence of the burner inlet temperature on NOx emissions
- 7.6 Influence of burner secondary stream momentum on NOx emissions
