multiphase simulation of entrained flow gasification ... · behavior • devolatization kinetics...
TRANSCRIPT
![Page 1: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/1.jpg)
April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Multiphase Simulation of Entrained Flow Gasification – Modeling Needs
Lanre Oshinowo, Ph.D. Research & Development/Technology
![Page 2: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/2.jpg)
2April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
OilCoal
Oil sandsNatural gas
Petroleum cokeCoal bed methane
Transportation fuelsGas-to-liquidsGasificationElectricityShale oil
LNG
3rd integrated energy company in the U.S 4th largest refiner in the world
6th largest worldwide reserves holder of National Oil Companies
![Page 3: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/3.jpg)
3April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Outline
• Gas-solids flow in the value chain
• E-Gas™ process overview
• Engineering needs
• Modeling requirements
• Summary
![Page 4: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/4.jpg)
4April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
ConocoPhillips Value Chain
![Page 5: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/5.jpg)
5April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
![Page 6: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/6.jpg)
6April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
E-Gas™ Gasifier
![Page 7: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/7.jpg)
7April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Engineering Information Desired
• Inputs– Feed – Type, Water content, Solids loading,
temperature, Injection…– Oxidant – O2 concentration, Temperature
• Outputs– Gas flow field – Temperature, velocity,
composition– Wall conditions – Temperature, heat flux, slag
flow– Carbon conversion, cold gas efficiency– Quantity of carryover – unburned carbon in
fly-ash– Influence of process, operating conditions
and geometric configurations
![Page 8: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/8.jpg)
8April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Coal/Petcoke Gasification
COAL/PETCOKE
CHAR COMBUSTION
CO2/H2O
Light gases &
tar
slag
CO/H2
CO/CO2
O2
CHAR GASIFICATION
FRAGMENTATION
SLAG FORMATION
DEVOLATIZATION
GAS PHASE REACTIONS
![Page 9: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/9.jpg)
9April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Multiphase Flow Simulation Needs
• High-fidelity models – detailed geometry and mesh
• Steady-state and transient• Heat transfer – convective, radiation• Particle-size distributions, solid collision
behavior• Devolatization kinetics – for range of
fuel types• Detailed kinetic modeling – gas-phase,
gas-solid, gas-solid-catalyzed• Range of flow conditions from high-
speed multiphase injection, turbulent combustion, high-viscosity slag flow
• Particle-wall interaction• Soot production models• Pollutant models• Accurate EOS and material properties
Gasification
COAL/PETCOKE
CHAR COMBUSTION
CO2/H2O
Light gases & tar
slag
CO/H2
CO/CO2
O2
CHAR GASIFICATION
FRAGMENTATION
SLAG FORMATION
DEVOLATIZATION
GAS PHASE REACTIONS
![Page 10: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/10.jpg)
10April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Solids Transport
• Relatively high velocity liquid/solid injection• Particle size distribution of slurry – wetted
solids + water• Fragmentation• Influence of injector on spray pattern• Ash deposition and slag transport• Turbulent dispersion
![Page 11: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/11.jpg)
11April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Devolatization
• Reaction, chemical or network models• Predictable for any fuel and range of process
conditions (T, P)• Influence on particle transport
– Solid or porous
![Page 12: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/12.jpg)
12April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Reactions
• Gas-phase– Equilibrium – Partial equilibrium– Full or reduced mechanisms
• Gas-solid– Pore-scale modeling– Mineral matter– Ash formation and inhibition
![Page 13: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/13.jpg)
13April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Turbulence
• Scales • Transients• Interaction with solid phase• Accurate “engineering” models
![Page 14: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/14.jpg)
14April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Speed
• Faster algorithms• Better parallelization• Efficient model methods
![Page 15: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/15.jpg)
15April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Value to ConocoPhillips
• A predictive CFD modeling tool could be used to guide engineers to derive much higher improvements in the efficiency and overall cost-savings
• CFD can be used to identify optimal design and reject poorly performing configurations
• Continuously improve the existing technology and design for the future
![Page 16: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/16.jpg)
16April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Acknowledgements
• Guy Lewis, Sergei Filatyev, Albert Tsang• ConocoPhillips E-Gas™ Group
![Page 17: Multiphase Simulation of Entrained Flow Gasification ... · behavior • Devolatization kinetics – for range of fuel types • Detailed kinetic modeling – gas-phase, gas-solid,](https://reader034.vdocuments.site/reader034/viewer/2022051923/60108a2889129c14ce4b4ba3/html5/thumbnails/17.jpg)
17April 22-23, 2009 NETL 2009 Workshop on Multiphase Flow Science
Feedback? Feedback?