the development of clean coal technology in the us · 2018-01-05 · coal liquefaction • coal...
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The Development of Clean Coal
Technology in the US
Jhih-Shyang Shih
Fellow
Resources for the Future
CTCI Foundation Environmental & Energy Convention
Taipei, Taiwan, ROC
January 16, 2007
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2007 CTCI Foundation
Environmental & Energy International Conference
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Overview
• Coal and Electricity– Electricity Demand
– Electricity Supply
• Strategic Drivers for Clean Coal– Economics, Energy Security and Environment
• Clean Coal Technology– Coal Liquefaction, Combustion Technology, Carbon Capture
and Sequestration, and Emission Control Technology
• Cost and Performance Comparison
• Policies/Programs and CCT
• Future Roadmaps
• Summary
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2007 CTCI Foundation
Environmental & Energy International Conference
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Coal and Electricity
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2007 CTCI Foundation
Environmental & Energy International Conference
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US Electric Power Generation
(2005)
Coal
49.7%
Petroleum
3.0%
Natural Gas
18.7%
Other Gases
0.4%Nuclear
19.3%
Hydroelectric
6.5%
Other Renewables
2.3%
Others
0.1%
Data Source: EIA, Electric Power Annual
Total = 4,055 Billion kWh
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2007 CTCI Foundation
Environmental & Energy International Conference
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Annual Electricity Sales by Sector
(billion kWh)
0
500
1000
1500
2000
2500
1970 1980 1990 2000 2010 2020 2030 2040
Commercial
Residential
Industrial
History Projections
Data Source: AEO 2006
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2007 CTCI Foundation
Environmental & Energy International Conference
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Electricity Generation by Fuel
2005 and 2030 (billion kWh)
0
500
1000
1500
2000
2500
3000
3500
4000
Coal Nuclear Natural Gas Renewables Petroleum
2005 2030
Data Source: AEO 2006
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2007 CTCI Foundation
Environmental & Energy International Conference
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Coal Generation Demand
by 2030
• 154 gigawatts of new coal capacity are
projected to be needed (EIA).
• 153 new coal-fired plants and 93 gigawatts
of new capacity are under consideration.
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2007 CTCI Foundation
Environmental & Energy International Conference
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Strategic Drivers for Clean Coal
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2007 CTCI Foundation
Environmental & Energy International Conference
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Economics
Historical Natural Gas Price
0
2
4
6
8
10
12
14
Jan-
02
Jul-
02
Jan-
03
Jul-
03
Jan-
04
Jul-
04
Jan-
05
Jul-
05
Jan-
06
Jul-
06
Time
NG
Pri
ce (
$/f
t^3
)
With oil and natural gas
prices rising, the world’s
appetite for coal is
soaring.
Historical Crude Oil Price
0
10
20
30
40
50
60
70
80
Jan-7
0
Jan-7
3
Jan-7
6
Jan-7
9
Jan-8
2
Jan-8
5
Jan-8
8
Jan-9
1
Jan-9
4
Jan-9
7
Jan-0
0
Jan-0
3
Jan-0
6
Time
Cru
de
Oil P
rice
($/b
bl)
Data Source: EIA
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2007 CTCI Foundation
Environmental & Energy International Conference
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Coal Reserve
• Total recoverable reserves of
coal around the world are
estimated at 1,001 billion
tons—enough to last
approximately 180 years
(compared to 41 years for oil
and 65 years for gas).
• 67 percent of the world’s
recoverable reserves are located
in four countries: the United
States (27 percent), Russia (17
percent), China (13 percent),
and India (10 percent).Source: World Coal Institute
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2007 CTCI Foundation
Environmental & Energy International Conference
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Coal Market and Price
• Coal is readily available from a
wide variety of sources in a
well-supplied worldwide
market.
• Coal prices have historically
been lower and more stable
than oil and gas prices.
• Coal is likely to remain the
most affordable fuel for power
generation in many developing
and industrialised countries for
several decades.
Source: World Coal Institute
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2007 CTCI Foundation
Environmental & Energy International Conference
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However …
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2007 CTCI Foundation
Environmental & Energy International Conference
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Environment
• Coal Use & the Environment– Coal is the major emitter of CO2, a greenhouse gas.
– Coal is also an emitter of particulate matters, SOx and
NOx, and mercury.
• Coal Mining & the Environment– land disturbance, mine subsidence, acid mine drainage,
dust & noise pollution.
– Rehabilitation.
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2007 CTCI Foundation
Environmental & Energy International Conference
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Environment
• Changes in the Qori
Kalis Glacier,
Quelccaya Ice Cap,
Peru, are shown
between 1978 (top)
and 2002.
• The glacier retreat
during this time was
1,100 meters.
Source: Scripps Institution
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2007 CTCI Foundation
Environmental & Energy International Conference
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Environment
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2007 CTCI Foundation
Environmental & Energy International Conference
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Challenges
• To improve global living standards and enable sustainable economic and social development for both rich and poor countries.
• To continue to supply secure and affordable electricity in the face of growing demand.
• To provide more efficient energy, reducing pollution, and increasing the emphasis on environmental sustainability.
The electricity is a major contributor to economic and social development. However, electricity generation faces many challenges in this century:
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2007 CTCI Foundation
Environmental & Energy International Conference
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Clean Coal Technology
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2007 CTCI Foundation
Environmental & Energy International Conference
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Clean Coal Technology
• Coal Liquefaction– Coal to Liquid (CTL)
• Combustion Technology– Pulverized Coal (PC) combustion
– Advanced PC technology
• Supercritical PC (SCPC) combustion
• Ultra-supercritical PC (USCPC) combustion
– Fluidized Bed Combustion (FBC)
– Integrated Gasification Combined Cycle (IGCC)
• Carbon Capture and Sequestration– Capture
– Sequestration
• Emissions Control Technology
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2007 CTCI Foundation
Environmental & Energy International Conference
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Coal Liquefaction
• Coal liquefaction is the conversion of coal into a synthetic oil in order to supplement natural sources of petroleum.
• Coal liquefaction and heavy oil refining were potentially the two largest sources of transportation fuels that could be used to mitigate the peaking of conventional oil.
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2007 CTCI Foundation
Environmental & Energy International Conference
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Pulverized Coal (PC) Combustion
Coal-fired electricity generation today normally uses
conventional subcritical pulverized coal (PC)
combustion.
Source: IEA
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2007 CTCI Foundation
Environmental & Energy International Conference
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Advanced PC Technology
• Two types: supercritical (SC) & ultra-supercritical (USC)
• Power plants operate at high temperatures and pressures. This results in higher efficiencies – up to 46% for supercritical and 50% for ultra-supercritical
• Lower coal consumption and pollutant emissions than conventional PC plant
• Advancements in materials, controls and temperature mixing led to improved performance and reliability
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2007 CTCI Foundation
Environmental & Energy International Conference
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Subcritical vs. Supercritical
117 Units 1,338 UnitsUS Operating Units
Lower- Higher
EfficiencyBaseControlled Emissions
LowerBaseFuel Cost
0-2% HigherBaseNon-Fuel O&M
1-6% HigherBasePlant Capital Cost
0-9% HigherBaseBoiler Capital Cost
36-44% HHV34-37% HHVHeatrate Efficiency
SupercriticalSubcritical
Source: Supercritical Plant Overview
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2007 CTCI Foundation
Environmental & Energy International Conference
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Fluidized-Bed Combustion (FBC)
• Fluidized beds suspend solid fuels on upward-
blowing jets of air during the combustion process.
• The technology burns fuel at temperatures of
1,400 to 1,700 degrees F, well below the threshold
where nitrogen oxides form and hence is able to
control pollutant emissions without external
emission controls (such as scrubbers).
• Greater fuel flexibility–(waste coals, pet coke,
fuels,..)
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2007 CTCI Foundation
Environmental & Energy International Conference
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FBC Capacities Have Been Increasing
320 MWEnel2001
2x250 MWRed Hills1998
220-250MWProvence, KEPCO1996
210 MWWarrior Run1993
2x155 MWTNP One1990
75 MWThames/Shady Point1989
1x150 MWShawnee (Repower)1988
15-43MWUltrasystems1987
1x65MWScott Paper1986
Great Lakes1981
Sources: Energy Ventures Analysis Inc
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2007 CTCI Foundation
Environmental & Energy International Conference
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Integrated Gasification Combined Cycle
(IGCC)
• 117 plants with 385 Gasifiers in operation in 2004. These facilities
produce mostly chemicals (37%), gas (36%) or power (19%)
• Current IGCC power technology applications focus on producing
CO rich syngas that can be burned in turbines.
– Gasifier converts coal, oxygen and steam to syngas
– Cleaned syngas is burned and by product is recovered
– Combustion gases expand in gas turbine, generates power
– Waste heat generates steam
– Steam expands in steam turbine, generates more power
• Future IGCC technologies maybe developed to produce hydrogen
rich syngas with maximum carbon capture ( “zero emission” IGCC).
• 28 Proposed IGCC power projects
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2007 CTCI Foundation
Environmental & Energy International Conference
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Source: NETL
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2007 CTCI Foundation
Environmental & Energy International Conference
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Planned Coal-Fired Power Plants
as of 2006
No. of Plants
23
13
2
28
0
5
10
15
20
25
30
CFB Supercritical Ultra-Supercritical Gasification
Data Source: NETL
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2007 CTCI Foundation
Environmental & Energy International Conference
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Carbon Capture• There are a number of options for the capture of
CO2:
– Post-combustion: Aqueous amines are the state-of-the-
art technology for CO2 capture for PC power plants.
– Pre-combustion: CO2 can be captured from a synthesis
gas (coming out of the coal gasification reactor) before it
is mixed with air in a combustion turbine.
– Oxyfuel: Coal is burned in an oxygen-rich atmosphere to
produce a pure stream of CO2.
– Chemical looping: Metal oxide is used as a solid oxygen
carrier. Metal oxide particles react with a solid, liquid or
gaseous fuel in a fluidized bed combustor, producing
solid metal particles and a mixture of carbon dioxide and
water vapor.
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2007 CTCI Foundation
Environmental & Energy International Conference
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Carbon Sequestration
• Sequestration is the placement of CO2
into a
repository in such a way that it will remain
sequestered for hundreds of thousands of years.
• Efforts are focused on three categories of
repositories:
– geologic sequestration,
– terrestrial sequestration, and
– oceans sequestration.
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2007 CTCI Foundation
Environmental & Energy International Conference
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Current Maturity of CCS
Systems Components
Source: IPCC
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2007 CTCI Foundation
Environmental & Energy International Conference
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The World Current, Planned and
Completed Storage Sites
Source: IPCC
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2007 CTCI Foundation
Environmental & Energy International Conference
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Emissions Control Technology• In the last three decades, technologies have been
developed to capture conventional pollutants contained in the exhaust systems from coal combustion technologies.
• Pollutants that can be removed include sulfur oxides, nitrogen oxides, and particulates.
• Mercury has been regulated since March 15, 2005.
• The technologies that can be utilized to remove these pollutants are:– Sulfur Oxides: Wet and Dry Flue Gas Desulfurization Plant
– Nitrogen Oxides: Low NOx burners, Post Combustion Catalytic Reduction Systems
– Particulates: Electrostatic Precipitator, Fabric Filters
– Mercury: Activated Carbon Injection Systems
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2007 CTCI Foundation
Environmental & Energy International Conference
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Mercury Emissions
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2007 CTCI Foundation
Environmental & Energy International Conference
![Page 67: The Development of Clean Coal Technology in the US · 2018-01-05 · Coal Liquefaction • Coal liquefaction is the conversion of coal into a synthetic oil in order to supplement](https://reader033.vdocuments.us/reader033/viewer/2022042121/5e9abed14c112c5fbf1ee355/html5/thumbnails/67.jpg)
Hg Speciation by Coal Rank
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2007 CTCI Foundation
Environmental & Energy International Conference
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Mercury Control
• Oxidized mercury: water soluble, high
removal with FGD
• Elemental mercury: non-water soluble, not
removed by most existing control
configurations
• Particulate mercury: can be removed by
existing particulate controls
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2007 CTCI Foundation
Environmental & Energy International Conference
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Mercury Emissions Control
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2007 CTCI Foundation
Environmental & Energy International Conference
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Performance and Cost
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2007 CTCI Foundation
Environmental & Energy International Conference
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HHV Efficiency (%)
39
31.5
36.3
23.9
38.5
26.9
50.6
43.4
0
10
20
30
40
50
60
IGCC IGCC w
CO2
Sub PC Sub PC
w CO2
Super PC Super PC
w CO2
NGCC NGCC w
CO2
Source: NETL
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2007 CTCI Foundation
Environmental & Energy International Conference
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Total Capital Requirement
($/kW, 2006 dollars)
1692
2245
1474
2626
1508
2635
568
988
0
500
1000
1500
2000
2500
3000
IGCC IGCC w
CO2
Sub PC Sub PC
w CO2
Super PC Super PC
w CO2
NGCC NGCC w
CO2
Source: NETL
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2007 CTCI Foundation
Environmental & Energy International Conference
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Cost of Electricity
(cents/kWh, 2006 dollars)
5.48
7.13
4.99
8.63
4.97
8.35
6.75
8.99
0
1
2
3
4
5
6
7
8
9
10
IGCC IGCC w
CO2
Sub PC Sub PC
w CO2
Super PC Super PC
w CO2
NGCC NGCC w
CO2
Source: NETL
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2007 CTCI Foundation
Environmental & Energy International Conference
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Performance and Cost of Hg
Emissions Control
• Mercury removal performance has been observed to vary between 70% and 98% using sorbenttechnology.
• The range of sorbent consumption costs is quite large, depending on the combustion technology.
• According to an NETL report, the estimated cost of mercury removal from an IGCC plant was $3,412 per pound of mercury, compare to $37,800 per pound of mercury removal from a PC plant.
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2007 CTCI Foundation
Environmental & Energy International Conference
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Policies/Programs and CCT
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2007 CTCI Foundation
Environmental & Energy International Conference
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Relevant Policies
• Energy Policy Act of 2005– Provide many incentives: authorization, tax incentives
and loan guarantees. The Energy Policy Act of 2005 (EPAct) authorized the Department of Treasury to provide tax credits as incentives to move advanced technologies to the marketplace. EPAct focuses on clean energy, efficient energy use, energy conservation, and advanced technologies.
– Energy and Treasury Secretaries Announce the Award of $1 Billion in Tax Credits to Promote Clean Coal Power Generation (11/30/2006).
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2007 CTCI Foundation
Environmental & Energy International Conference
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Relevant Policies
• Clean Air Act– Clean Air Interstate Rule (CAIR) –It contains an
annual SO2 cap-and-trade program, as well as an annual and Ozone Season NOx cap-and-trade program, dependent on a state’s contribution to downwind PM and Ozone concentrations.
– Clean Air Mercury Rule (CAMR) –It is a mercury cap-and-trade program affecting new and existing coal fired units greater than 25 MW.Phase I starts in 2010 and has a national cap of 38 TPY; Phase II starts in 2018 and has a national cap of 15 TPY.
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2007 CTCI Foundation
Environmental & Energy International Conference
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Relevant Policies• Climate Change
– Regional Greenhouse Gas Initiative (RGGI) is a regional initiative by states in the Northeastern United States region to reduce greenhouse gas emissions.
– The RGGI is designing a cap and trade program for emissions from power plants.
– In August 2005, the RGGI staff working groupproposed an emissions reduction program that would start in 2009 and lead to a stabilization of emissions at an average of 2002-2004 levels by 2015.
– California Governor’s Executive Order # S-3-05 (June 1, 2005) and AB 32, the California Global Warming Solutions Act of 2006.
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2007 CTCI Foundation
Environmental & Energy International Conference
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Relevant Programs• The Clean Coal Power Initiative (CCPI)
– is a 10-year, $2 billion program designed to support the Clean Coal Technology Roadmap milestones with the government providing up to 50 percent of the cost of demonstrating a range of promising technologies.
• Power Plant Improvement Initiative (2000)– was established in October 2000 to further the
commercial-scale demonstration of clean coal technologies at existing and new electric generating facilities.
• The FutureGen Initiative (12/6/2005)– is a $1 billion industry/government partner- ship to
design, build and operate a coal gasification-based, nearly emission-free, coal-fired electricity and hydrogen production plant.
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2007 CTCI Foundation
Environmental & Energy International Conference
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FutureGen
Source: NETL
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2007 CTCI Foundation
Environmental & Energy International Conference
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CCT Roadmap
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2007 CTCI Foundation
Environmental & Energy International Conference
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Clean Coal Technology Roadmap
• It is the U.S. DOE's plan to develop the
technology needed for future power plants.
• The Roadmap was developed cooperatively
by DOE/NETL, the Coal Utilization
Research Council (CURC) and the Electric
Power Research Institute (EPRI).
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2007 CTCI Foundation
Environmental & Energy International
Conference
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Clean Coal Technology
Roadmap Areas
• Air Emissions
• CO2 Management
• By-Product Utilization
• Water Use and Discharge
• Plant Efficiency
• Reliability
• Capital and Production Cost
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2007 CTCI Foundation
Environmental & Energy International Conference
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Area Targets
Source: NETL
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2007 CTCI Foundation
Environmental & Energy International Conference
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Area Targets
Source: NETL
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2007 CTCI Foundation
Environmental & Energy International Conference
![Page 105: The Development of Clean Coal Technology in the US · 2018-01-05 · Coal Liquefaction • Coal liquefaction is the conversion of coal into a synthetic oil in order to supplement](https://reader033.vdocuments.us/reader033/viewer/2022042121/5e9abed14c112c5fbf1ee355/html5/thumbnails/105.jpg)
Critical Needs
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2007 CTCI Foundation
Environmental & Energy International Conference
![Page 107: The Development of Clean Coal Technology in the US · 2018-01-05 · Coal Liquefaction • Coal liquefaction is the conversion of coal into a synthetic oil in order to supplement](https://reader033.vdocuments.us/reader033/viewer/2022042121/5e9abed14c112c5fbf1ee355/html5/thumbnails/107.jpg)
Summary
• Coal plays important role in meeting future energy demand– Power generation – electricity demand
– Liquid fuels and chemicals (substitutes for gas and oil)
• Constraints on the use of coal– Environmental requirements
– Path of technology development/deployment
• Technology, Public Policy and Coal: Making the Connection
• More efficient and environmental friendly
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2007 CTCI Foundation
Environmental & Energy International Conference
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2007 CTCI Foundation
Environmental & Energy International Conference