Toporov Combustion of Pulverised Coal in a Mixture of Oxygen and Recycled Flue Gas

1. Auflage 2014
ISBN: 978-0-08-100004-5
Verlag: Elsevier Science & Techn.
Format: EPUB
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 272 Seiten

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. Toporov's book breaks ground on covering the key fundamentals of oxycoal technologies, which have not yet been covered in this depth. Combustion of Pulverised Coal in a Mixture of Oxygen and Recycled Flue Gas summarizes the main results from a pioneering work on experimental and numerical investigations of oxyfuel technologies. It provides the theoretical background of the process, the problems to be faced, and the technical solutions that were achieved during these investigations. - Summarizes results from investigations of oxyfuel technologies performed at Aachen University, Germany - Provides theoretical background, as well as the primary problems of these technologies and how they can be solved

Dr. Dobrin D. Toporov is a Private Docent at the RWTH Aachen University, Germany and a Deputy Head of the Gasification Department at the Gas Technologies Division, ThyssenKrupp Industrial Solutions AG, Germany. He has more than ten years post-doc research experience in the field of coal combustion and gasification.

Autoren/Hrsg.

Toporov, Dobrin

Leseproben

Nomenclature
Symbol
A Area  [m2] A Pre-exponential factor  [varies] Ak Mole fraction  [–] A, B Empirical coefficients in EDM  [–] c Molar concentration  [mol/m3] C Function, coefficient, constant  [–] CD1, CD2 Empirical coefficients in EDC  [–] cp Specific heat capacity  [J/kg-K] d Diameter  [m] D Coefficient  [–] E Activation energy  [kJ/mol] f Force  [N] ?H Heat of formation  [J/kg] h Heat transfer coefficient  [W/m2-K] I Radiation intensity  [W/m2-sr] k Turbulent kinetic energy  [m2/s2] K Constant  [–] L Characteristic length  [m] m, M Mass  [kg] M Molecular weight  [kg/mol] m Mass flow rate  [kg/s] p, P Pressure  [Pa] p Ratio  [–] Q Thermal input  [W] r Stoichiometric ratio  [–] R Reaction rate  [kg/(m3 s)] R Universal gas constant  8,314 kJ/(kmol K) S Particle internal surface area  [m2] S Source terms  [varies] t Time  [s] T Temperature  [K], [°C] u, v Velocity components  [m/s] u',v' Fluctuation of velocity  [m/s] V Mass  [kg] X Distance  [m] Y Mass fraction  [–] Greek Letters
a Absorptivity  [–] ? Mass fraction  [–] e Emissivity  [–] e Effectiveness factor  [–] e Dissipation rate of turbulent energy  [m2/s3] F Source term  [varies] ? Ratio  [–] G Diffusion coefficient  [kg/(m s)] d,? Difference operator  [–] d Particle pore diameter  [10-9 m] ? Dynamic viscosity  [kg/(m s)] ? Excess air ratio  [–] ? Kinematic viscosity  [m2/s] ? Stoichiometric coefficient  [–] ? Frequency  [1/s] ? Density  [kg/m3] ? Reaction-rate ratio in CPD model  [–] t Time constant  [s] t Tortuosity  [–] t Shear stresses  [kg/(s2 m)] s Model constants  [–] s Stefan-Boltzmann constant  5,669 W/(m2 k) ? Reaction rate  [1/s] Abbreviations
AFT Adiabatic Flame Temperature ASTM American Society for Testing and Materials BFB Bubbling Fluidised Bed BO Burnout d.a.f. Dry Ash-Free DIN Deutsches Institut fuer Normung CBK Char Burnout Kinetics Model CCS Carbon Capture and Storage CCR Carbon Capture and Reuse CDL Coal Devolatilisation Laboratory CFB Circulating Fluidised Bed CFD Computational Fluid Dynamics CPD Chemical Percolation Devolatilisation Model CR Conversion Ratio EDC Eddy Dissipation Concept EDM Eddy Dissipation Model ER External Recirculation ESP Electrostatic Precipitators EWBM Exponential Wideband Model FB Fluidised Bed FGD Flue Gas Desulphurisation FG-DVC Functional Group, Depolymerisation, Vaporisation, and Cross-Linking GHG Greenhouse Gas GCV Gross Calorific Value IGCC Integrated Gasification Combine Cycle IPFR Isothermal Plug Flow Reactor IRZ Internal Recirculation Zone KIN Kinetics LES Large Eddy Simulation L-H Langmuir-Hinshelwood max Maximum min Minimum Mtoe Million (Mega-) Tonnes of Oil Equivalent NMR Nuclear Magnetic Resonance OECD Organisation for Economic Cooperation and Development OFA Overfire Air PFBC Pressurised Fluidised Bed Combustion PFR Plug Flow Reactor PM Primary Stream Momentum Ratio ppm Parts Per Million PS Primary Stream RANS Reynolds Averaged Navier Stokes RFG Recirculated Flue Gas R/P Reserves-to-Production SCR Selective Catalytic Reduction SK Steinkohle SM Secondary Stream Momentum Ratio SS Secondary Stream TA Thermal Annealing TGA Thermogravimetric Analysis TS Tertiary Stream VM Volatile Matter Vol Volume URANS Unsteady Reynolds Averaged Navier Stokes WSGGM Weighted Sum of Grey Gases Model wt Weight WTA Wirbelschicht-Trocknung von Braunkohle mit interner Abwärmenutzung Dimensionless Numbers
Nu Nusselt number Re Reynolds number Sh Sherwood number Subscripts
ad Adsorption ash Related to fuel ash app, a Apparent b...