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Prof. Dr. techn. G. Scheffknecht
Institut für Feuerungs- und Kraftwerkstechnik
INTRODUCTION AND OVERVIEW OF OXYFUEL COMBUSTION FOR POWER PLANT WITH CCS
Oxyfuel Combustion Capacity Building Course
Wuhan, China
27th October 2015
by
Joerg Maier
Contact:
2
History of 6th Oxy-fuel Course
1. KEPRI, Deojeon, Korea, 2009
2. Tshinghua, Beijing, China, 2010
3. OCC2, Yeppon, Australia, 2011
4. Institute of Technology, Tokyo, Japan 2012
5. OCC3, CUIDEN, Ponferrada, Spain, 2013
6. Huazhong University, Wuhan, China, 2015
J.Maier, Wuhan 2015
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Background: Global Drivers why CCS
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• By 2050, global population will rise from 7 to 9 billion
people
• World energy demand is expected to increase by
50% over the next 20 years Fossil fuels (coal, gas and oil) represent 80% of the global energy mix
• Renewables could make
up 30% of the global
energy mix* by 2030
Background: Global Drivers why CCS
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Capture CO2 capture,
purification und compression
Transport Pipelines, Ships,
Trucks Projects:
ROAD (NL) COCATE (EU), IMPACTS (NO), Compostilla
(ES)
Storage/
Utilization Geological
formations, saline aquifers, EOR, etc. Projects: Sleipner (NO),
Hammerfest (NO)
Background – CCS Technology
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•CO2 captured from flue gas. Post-
combustion
•Fuel converted into H2 und CO2. •Capture of CO2. •H2 used as fuel.
Pre-combustion
•Oxygen separated from air. •Combustion of fuel using O2 instead of air. •Flue gas composition is mainly CO2 und
H2O.
Background – CCS capture processes
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Ash removal /
cooler /
condenser / FGD
Steam
Fuel
Power
CO2 –rich
Flue Gas
Conc.
Stream
of CO 2
Boiler or
Gas Turbine
Steam
Turbine
Purification /
compression
Oxygen
CO2 (SO2)
Air
Separation
unit (ASU)
Air
Recycled Flue Gas (RFG)
Nitrogen
Vent
Front end Back end
Wall, T. et al (2009) An overview on oxyfuel coal combustion: State of the art research and technology development.
Oxy-fuel Technology overview
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Road Map Vattenfall
Source: Vattenfall IEA Cottbus 2009
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Research Oxy-fuel
Research
areas
Pollutant
formation and removal
Corrosion
Gas and particle radiation
modelling
Air Separation
CFD & Process Simulation
Oxy-fuel combustion
CO2-Compression
Slagging and fouling
Operation control & automatisation
J.Maier, Wuhan 2015
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Research Institutes supporting Oxy-Developments
J.Maier, Wuhan 2015
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Source: Stanley Santos
Historical Progression of Oxyfuel
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Vattenfall 30MWth,
Germany
Cuiden 20MWth PC
30MWth CFB,
Spain
Callide 30MWe,
Retrofit,
Australia
Industrial Oxyfuel Power Plant Pilots
J.Maier, Wuhan 2015
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Notes:
No S removal
Slip stream for partial CO2 recovery
Primary gas has cooler/condenser to dry gas, which
removes some SOx
Hg removed in fabric filter?
Callide Process schema
source: C. Spero, Ponferada 2013
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White Rose 448 MWe Oxy-coal power plant
426MWe oxyfuel combustion
90% capture, 2MT CO2
annually
75km onshore pipeline
potential to transport 100MT
CO2 annually
Deep saline aquifer in South
North Sea
Approx. 2 billion investment,
€300 NER300 funding
awarded.
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• The US oxy-fuel project FUTUREGEN 2.0 did not receive funding from the US government.
• In Europe, Endesa’s 300MW CFB Compostilla project and Jänschwalde 250MW are not being progressed.
In UK the White Rose project is being progressed (feasibility study).
Total’s oxy-natural gas pilot plant at Lacq (30 MW) finished first, monitoring of the reservoir ongoing.
• In China, the Shenmu-Shanxi (200 MW) feasibility study
• Korea, Young Dong (100 MW) project changed to Biomass
• In Australia, the Callide Oxyfuel Demonstration successfully finished
operative trials.
Status ongoing activities
J.Maier, Wuhan 2015
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SaskPower’s Boundary Dam- 139 MW CCS Project
First Coal-fired power plant to employ full-scale postcombustion CCS
Location: Estevan, Saskatchewan, Canada
Budget: 1.4 billion dollars
Capture: approx. 1 million metric tons of CO2
(90% of emissions from Unit 3)
Process: Amine based for CO2/SO2 capture
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Coal power39.6%
Gas Power
8.4%Cement
5.3%
Chemicals
3.3%
Iron and steel10%
Gas Processing4.3%
Natural gas synfuel
4%
Biomass synfuel20.2%
Biomass power5%
CO2-Anthropogenic sources
Transfer of Oxyfuel Technology
J.Maier, Wuhan 2015
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Energetic
efficiency
Renewable
energies
CO2 Capture and
Storage (CCS) + +
“CCS is an essential part of the portfolio of
technologies
needed to achieve substantial global emissions reductions.”
Thank you for your attention!
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