Enhancing lignite to be the fuel of tomorrow - Lignite Energy Council · 11/06/2018 · Lignite...
Transcript of Enhancing lignite to be the fuel of tomorrow - Lignite Energy Council · 11/06/2018 · Lignite...
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Mike Holmes
VP – Research and Development
Lignite Energy Council
Enhancing lignite to be
the fuel of tomorrow
6/11/2018
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New Power Plant
If you were asked to design a new power plant, what would be most important?
1. Less coal per megawatt-hour (efficiency)
2. Near zero emissions (environment)
3. Low cost electricity (economics)
1
2
3
33.3%
33.3%
33.3%
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Founding Premise
• There is no challenge regarding the use of coal as a clean, efficient fuel that has not been met by technology – nearly 90 percent of criteria pollutants from U.S. coal-based power plants are now captured or reduced through the use of technology
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Over the last 2 years coal use
world wide has ??
1. Decreased by 20%
2. Decreased by 50%
3. Remained Constant
4. Increased
1
2
3
4
25.0%
25.0%
25.0%
25.0%
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Projected Coal use
Worldwide
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Reality Today
• “Energy may very well be the single most critical challenge facing humanity in this century.“ -- Nobel Laureate Richard Smalley
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The Challenge
• 10 terawatts (TW) of clean power on a sustainable basis and do this cheaply
• Who will make the necessary scientific and engineering breakthroughs?
• Can it be cheap enough to bring 10 billion people to a reasonable standard of living?
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• State-industry R&D partnership
• Lignite resource
• Current R&D challenges
– Improving efficiencies
– Reducing nitrogen oxides
– Capturing and storing CO2
• Summary
• Lignite Jeopardy Game
Agenda
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Glossary
• Clean Coal Technologies:
– Defined by Congress in mid-1980s as technologies to reduce sulfur dioxide and nitrogen oxides (30 years later often refers to reduction of CO2)
– Technologies that increase efficiencies and reduce emissions on a per unit energy basis are also clean coal technologies
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Lignite Research Council’s
R&D Program
Public / Private Partnership
Lignite
Energy
Council
State of
North
Dakota
http://www.lignite.com/ResDev/index.htmhttp://www.nd.gov/ndic/lrc-infopage.htm
An Industry/Government Partnership
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Leveraging State Dollars
For every state dollar,
six dollars is
invested from
industry & other
sources in lignite-
related R&D projects
=
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Active Lignite Research ProjectsQuick Review of Active and Recently Completed Projects (23)• 1 LEC Enhance, Preserve & Protect Program• 3 Separate LV21P projects • 1 Mercury-related projects • 2 NOx-related project• 4 Lignite gasification-related projects• 5 CO2 Carbon Capture & Storage-related projects • 1 Regional marketing project • 2 Air toxic metals project • 1 Curriculum Development Project• 1 Beneficial Use of CO2• Use of Nano materials to improve options for reuse of
coal ash
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Future of Lignite
• The resource: 800-year supply of lignite
From a physicist’s perspective:
• High ash, low BTU, one-third water, high sodium
• Highly reactive for gasification purposes
• Low cost source of carbon
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146/11/2018
A Look at Lignite
Organic Matter
C, H, O, S, N
Inorganic Matter
SiO2, Al2O3 -Clays, FeS2
Lignite
Water
55%
10%35%
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Electric Power
Generation - 79%
Synthetic Natural
Gas - 13.5%
Specialty Products
7.5%
ND Lignite Consumption
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Coal Drying Activity
• As mined, lignite is approximately one-third moisture. This makes it uneconomical to transport by rail. However, a coal drying facility is now operational at Coal Creek Station has may make transporting lignite a more economical proposition.
• The coal drying project has its roots in a simple experiment that you can simulate in the classroom.
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Coal Drying Procedure
• Weigh about 100 grams of lignite on a paper plate
• Place the coal onto a cookie sheet and place it in an oven set at its lowest temperature – 100 or 120F for four hours
• Reweigh the coal to determine the weight loss due to moisture and calculate the percent of moisture
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Coal Drying Procedure
Alternative Drying Methods
• Dry the lignite using the “waste” heat from a light bulb. This method will model Coal Creek’s use of waste heat from its boiler.
• Simply place the lignite in a sunny window and let it dry. Weigh the sample each day until the weight is constant for two days.
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Coal Drying Activity (Cont.)
• Coal Creek pulverizes the coal prior to drying, so students can compare the rate of moisture loss and total amount of moisture lost between crushed and uncrushed coal
• Pulverized coal has greater surface area and should dry faster than coal in larger pieces
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Coal Dryer Development
Prototype model built
adjacent to the plant (1/06)
Used waste heat to dry the
coal after it was pulverized
Tests showed how much heat
& time needed
Eight coal dryers have been
installed to dry all of the coal
(operational 12/09)
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Current Energy Conversion
Technologies
Pulverized Coal-Fired Boilers
2400 PSI Steam;
1000ºF
Up to 600 MW/unit in
ND
30-32% Efficient
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Current Energy Conversion
Technologies
Pulverized Coal-Fired Boilers
Antelope Valley Station Coal Creek StationM.R. Young Station
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Current Energy Conversion
Technologies
Pulverized Coal-Fired Boilers
Coyote Station Leland Olds Station
Stanton Station
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Current Energy Conversion
Technologies
• Fluidized bed boiler technology
Heskett Station Spiritwood Station
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Future Generating Technologies
Advanced Pulverized Coal
Oxy-fuel Combustion
Integrated Gasification Combined Cycle (IGCC)
Poly-generation
Chemical Looping
Allam Cycle
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Supercritical Pulverized Coal
Power Plant
3500 PSI Steam; 1050ºF
Up to 1300 MW/Unit
35-40% Efficient
Future Generating Technologies
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Future Generating Technologies
Oxy-combustion
Technology
consideration to
capture CO2
Energy penalty ~ 1/3
(450 MW Gross
yields 300 MW Net)
First demonstrations
underway in US and
Europe
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Future Generating Technologies
IGCC
Up to 300 MW/Unit
40-45% Efficient
Cost, availability &
lack of lignite
experience are
issues
Kemper County
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Products
Electric Power
Synthetic Natural Gas
Liquid Transportation Fuels
Hydrogen
Chemicals
Gasification
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306/11/2018
Chemical Looping – LCL-C™
ProcessAdvanced oxy combustion technology without ASUs
Advanced oxy-combustion system without Air Separation Unit
• No cryogenic Air Separation Unit
• Two interconnected boilers
• Limestone as oxygen carrier
Fuel reactor Air reactor
(Reducer) (Oxidizer)
Ash
Particulate
control
Desulfurization/
Particulate
control
FGC, Flue gas
condenser
GPU, Gas
processing unit
To storage
CO2
Water
CO2
Purification
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Allam Cycle
• Converts Coal to Syngas
• Uses supercritical CO2 as working fluid
• Very high pressure oxycombustion
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Overall Technology
Development Road
Map
32
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Overview 33 | Allam Cycle
Allam Cycle achieves
clean, low-cost
electricity competitive
with all state-of-the-art
systems
Note:• LCOE calculated using EPRI methodology• Assumes $6.50/MMBtu natural gas and $2.00/MMBtu coal• Cost ranges represent data from several sources: EIA (2013); Parsons Brinkerhoff (2013); NETL (2012); Black & Veatch (2012)
33
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The Allam Cycle Video
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Emission Control Technologies
Particulate Matter (PM) reduction >99.99%
Sulfur Dioxide (SO2) reduction >97%
Nitrogen Oxides (NOx) reduction 50% → > 90% goal
Mercury (Hg) reduction 50%-90% → > 90% goal
Carbon Dioxide (CO2) ??? %
• New plants
• Existing plants
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376/11/2018
Wet
Scrubber
Boiler
Stack
Baghouse
Coal
Overfire Air,
low NOxburners, injection of ammonia
Emission Control Technologies
Electrostatic
Precipitator
Stack
Dry Scrubber
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Carbon Capture Technologies
• 2010 Study of Carbon Capture Options for the existing fleet
– Examined all existing lignite-based power plants in ND
– Examined technical and economic issues for the individual plants
– Determines the cost and parasitic power losses for each plant
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Antelope Valley FEED
Study
• Examined 125 MWe slip stream
• Considered amine based system
• Received support from LRC
• Cost and availability of “Commercially viable” options
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DOE CCS Program Goals
• By 2020, have available for commercial deployment technologies and best practices for achieving:
– 90% CO2 capture
– 99%+ storage permanence
– < 10% increase in COE (pre-combustion capture)
– < 35% increase in COE (post- and oxy-combustion)
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416/11/2018
CO2 Capture Technology R&D Timeline
20102008 20162012 2020 2024
Large-Scale Field Testing
Laboratory-Bench-Pilot Scale R&D
Full-Scale Demos
Commercial Deployment
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NDIC Funding Commitment• Carbon capture-related projects:
– Carbozyme membrane technology $ 260,000– Partnership for CO2 Capture 300,000– Canadian Clean Power Coalition 130,000– AVS Carbon Capture FEED 2,700,000– Partnership for CO2 Capture II 150,000– Partnership for CO2 Capture III 500,000– Oxy-firing Alstom 550,000– Evaluation of Novel CO2 Capture 50,000– CACHYS 350,000
$4,990,000
• Carbon storage-related projects: – PCOR Phase II $ 720,000– PCOR Phase III 2,400,000
$3,120,000
Total CCS commitment $8,110,000
Carbon Management Initiatives NDIC Investment
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• Partnership for CO2 Capture
– EERC project approved by LRC/NDIC – May 2008
– Develop & demonstrate a range of CO2 capture technologies to include pre-combustion, post-combustion & oxy-combustion technologies
– $3.4 million project (DOE/EERC $2.4 M; Industry $750 K; NDIC $300 K)
– Start date: 6/08; Completion date: 06/10
– Phase II, ~$2M, Started 7/10
– Builds on findings from Phase I
Carbon Management Initiatives
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• Plains Carbon Dioxide Reduction Partnership (PCOR)
– Phase I – Characterization of sources & sinks (2003-2005)
– Phase II – Small-scale field validation tests (2005-2009)
– Phase III – Large volume carbon storage test (2008-2017)
Carbon Management Initiatives
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• PCOR Phase III (2008-2017)
– Large-scale demo projects over 10 years
– Capturing CO2 from AVS & storage in geological formations
– CO2 storage to include enhanced oil recovery & deep saline aquifer storage
– DOE committed $67 million
– NDIC committed $2.4 million – 2/08
– Total Project Cost (capture & storage) >$300 M
Carbon Management Initiatives
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Glossary
• Carbon Capture: The process of separating relatively pure carbon dioxide gas as a by-product of industrial processes and electricity generated from fossil fuels
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Mississippi Power
Kemper County:
Mississippi Power is
currently in construction of
a ~$6 billion IGCC plant
Will consume Mississippi
lignite to produce
electricity
Near zero emissions
Power block operational in
2014 on Natural Gas, On
syngas in late 2016
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Carbon Sequestration
• SaskPower CO2 capture & storage project
– $1.24 billion, 7-year demonstration project announced 2/27/08
– Partnership: Gov. of Canada, Gov. of Sask., SaskPower & industry
– Project at Boundary Dam - 150 MW Unit III (existing unit)
– Designed to capture ~ 1 million tons CO2 / year
– CO2 capture technology & vendor is Cansolv
– CO2 to be used for EOR
– Began operation in October 2014
Retrofit Project
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U.S. needs more sources of
energy & needs to lessen
dependence on foreign
sources
Lignite is a valuable source of
energy & chemical products
R&D is critical in the wise
use of this abundant resource
Summary
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Questions?
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Activity
LIGNITE JEOPARDY
GAME
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Thanks for Listening!
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6/11/2018
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6/11/2018