Modeling, Design, and Pilot-Scale Experiments of CANMET's ...
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2nd Workshop International Oxy-Combustion Research Network Hilton Garden Inn Windsor, CT, USA 25th and 26th January 2007 Hosted by: Alstom Power PRESENTATION - 09 Modeling, Design, and Pilot-Scale Experiments of CANMET's Advanced Oxy-Fuel/Steam Burner by: Carlos Salvador CANMET Energy Technology Centre, Canada
Transcript of Modeling, Design, and Pilot-Scale Experiments of CANMET's ...
2nd Workshop
International Oxy-Combustion Research Network Hilton Garden Inn Windsor, CT, USA
25th and 26th January 2007
Hosted by:
Alstom Power
PRESENTATION - 09
Modeling, Design, and Pilot-Scale Experiments of CANMET's Advanced Oxy-Fuel/Steam Burner
by: Carlos Salvador CANMET Energy Technology Centre, Canada
2nd Int'l Oxy-Combustion Workshop Page 1
Modeling, Design, and Pilot-Scale Experiments of CANMET's Advanced Oxy-Fuel/Steam Burner
K. Zanganeh, C. Salvador, and M. MitrovicZero-Emission Technologies Group, CEPG2nd IEA GHG Oxy-Combustion WorkshopJanuary 25-26, 2007
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Technology Background
• Clean fossil fuel combustion with CO2 capture pathways
CO2Removal
Gasification/ Reforming
Power & Heat
CO2Compression & Transport for Storage
Process Carbon Release
Coal/Coke /NG/Fuel Oil/
Biomass
O2 /Steam
Industrial Processes
Post-combustion Capture
Raw Materials
H2
CO2
CO2Air-Combustion Power
& Heat
Carbon Removal Combustion
Oxy-Combustion
Value Added Products i.e. Ammonia, NG, Transport Fuels,
Cement, Steel etc.
CO2Removal
Power & Heat
CO2Removal
5-10 % CO2
Flue gas
>80 % CO2
Flue gas
20-40 % CO2
Syngas
20-95 % CO2
Process stream
CO2
CO2
Pre-combustion Capture
Oxy-fuel Combustion
CO2
CO2Removal
Gasification/ Reforming
Power & Heat
CO2Compression & Transport for Storage
Process Carbon Release
Coal/Coke /NG/Fuel Oil/
Biomass
O2 /Steam
Industrial Processes
Post-combustion Capture
Raw Materials
H2
CO2
CO2Air-Combustion Power
& Heat
Carbon Removal Combustion
Oxy-Combustion
Value Added Products i.e. Ammonia, NG, Transport Fuels,
Cement, Steel etc.
CO2Removal
Power & Heat
CO2Removal
5-10 % CO2
Flue gas
>80 % CO2
Flue gas
20-40 % CO2
Syngas
20-95 % CO2
Process stream
CO2
CO2
Pre-combustion Capture
Oxy-fuel Combustion
CO2
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Technology Background (cont…)
• Oxy-fuel combustion pathways
Combustion Atmospheric
Pressurized
GasificationReforming
PressurizedCO2 removal
Oxy-Combustion:•Retrofits•New boilers•Turbines/Fuel Cells
Energy Conversion Operation Technologies
Fossil Fuel
H2
PressurizedCO + H2
CO2 Scrubbing:Amine
HydrogenCombined cyclesFuel cells
O2
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Technology Background (cont…)
• Oxy-fuel combustion systems• 1st generation oxy-fuel combustion systems - Flue gas is recycled to control
the combustion temperature
Other fuels, e.g., NG, bitumen
Particulates, SO2
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Technology Background (cont…)
• No reduction in unit size/volume compared to air-fired combustion (up to flue gas branch point)
• No energy efficient integration and optimization of the process• No efficient recovery of low temperature heat • Need to design the whole plant as a gas-tight system
– CO2 and hot gas leakage out• Operational safety considerations
– Plant has to operate at slightly negative pressure• Air leakage in
• Need for flue gas recycle to transport coal from the mills– Need for gas-tight mills– Need for treatment of the primary recycle flow, etc
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Technology Background (cont…)
• 2nd generation oxy-fuel combustion systems - Energy efficient integration and optimization of the process, recovery of low temperature heat
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Recycled Flue Gas
Air SeparationUnit
O2
Gas Purification
Fossil fuelcombustion
Power or Heat
N2
StorageCO2
Compression
1/5 exit gas volume relative to airCO2 at 80-98% by volume
Other pollutants and/or water
For process heaters, furnaces and boilers
Technology Background (cont…)• 3rd generation oxy-fuel combustion systems – Minimizing or eliminating the flue
gas recycle (no FGR)
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H2OO2
PR
Ash
• Low NOx & excess O2,• Higher radiative & convective heat transfer,• process model, CFD, system and component design
Combustor(turbine) CHX
Technology Background (cont…)
Heatrecovery
Fuel CO2 to Compression
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Hydroxy-Fuel Technology Development
Motivation: •Develop the technology base necessary for the implementation of efficient zero-emissions fossil fuel systems
Overall Objectives:• Investigate the feasibility of hydroxy-fuel combustion for the 3rd generation of oxy-fuel systems
• Investigate the reduction in size and capital cost of equipment
•Use of water/steam, preferably with no FGR, to moderate the flame temperature
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Hydroxy-Fuel Technology Development (cont…)
• Selected power cycles
A reheat cycle with steam or water as temperature moderator
Advanced Steam Generators, Richards et. al, NETL
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Development, Design and Integration
Overall SystemIntegration
Scale-Up
Zero-Emission Oxy-Steam Combustion
Steam GenerationDelivery System
Oxy-SteamBurner
Optimization &Testing
VC Plant
Process & SystemDesign
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CFD Simulation• Gauged the suitability of a test burner for hydroxy-fuel
combustion. Temperature Profile
O2 distribution
Flame leans to one side.
Development, Design and Integration (cont…)
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StagnationPoint
Temperature Profile
Vector Plot of Speed
CFD Simulation
Uniform temperaturedistribution
Development, Design and Integration (cont…)
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• Burner prototype• Firing rate: 0.3MWth (1MMBtu/hr)• Fuels:
– Natural gas– Oil, Emulsion– Pulverized coal and coal slurry
• Operational modes– O2/steam– O2/RFG– O2/CO2– Air– Enriched air– O2/steam/RFG– O2/steam/CO2
• Variable secondary & tertiary streams• Independent secondary & tertiary swirl
Development, Design and Integration (cont…)
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Integration with Vertical Combustor • Steam generation system• O2 and steam piping design• Instrumentation and control• Graphical user/control interface
Development, Design and Integration (cont…)
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• All aspects of hydroxy-fuel process design, technology development, and implementation were performed at CANMET– i.e., design, manufacturing, system integration, and pilot-scale
testing
• The preliminary pilot-scale test results are very encouraging
• Economic and scale up studies will be performed after completion of all pilot-scale tests
• The oxy-fuel/steam burner design is novel and we are in the process of applying for a patent
Concluding Remarks
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Advance Flame Imaging System (AFIS)
VC
COMBUSTORSECTION(FLAME ZONE)
Card
FIELD OFVIEW
BURNEREXIT PLANE
BURNERASSEMBLY
COMBUSTIONFLUE GASSTREAM
CAMERAPROBE(AFIS)
IMAGE PROCESSOR
MONITOR
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Thank You
