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United States Coal Generation. Asia Pacific Partnership Brown Coal (Lignite) Best Practice Workshop Melbourne, Australia 23 - 27 June 2008. Gas 26%. Coal 27%. Gas 24%. Coal 25%. Nuclear 6%. Nuclear 5%. Oil 37%. Oil 33%. Renewables 8%. Renewables 9%.

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United states coal generation

United States Coal Generation

Asia Pacific Partnership

Brown Coal (Lignite) Best Practice Workshop

Melbourne, Australia

23 - 27 June 2008


Growing world energy demand

Gas

26%

Coal

27%

Gas

24%

Coal

25%

Nuclear 6%

Nuclear

5%

Oil 37%

Oil 33%

Renewables 8%

Renewables

9%

Growing World Energy Demand

World Energy Consumption Today

World Energy Consumption 2030

465 QBtu or 490 EJ

86% Fossil Energy

722 QBtu or 761 EJ

87% Fossil Energy

World today and tomorrow data from EIA AEO 2007, early release for years 2006 and 2030.

U.S. Department of Energy



Coal is expected to play a key role in growth of emerging economies

Power generation

Other

4 000

TE

Other OECD

3 500

EU27

3 000

Japan

US

2 500

Other DC

Mtoe

2 000

India

China

1 500

1 000

500

0

2005

2030

2005

2030

Coal is expected to play a key role in growth of Emerging Economies

Coal input

Global CO2 emissions from coal: 11 GtCO2 in 2005, 19 GtCO2 in 2030

Source: IEA, World Energy Outlook 2007, Reference scenario.


Age of Existing Coal-Fired Capacity in 2005 (MW) in India, China, and USA

Data Source: Platts UDI, 2005



Us coal producing region
US Coal-Producing Region China, and USA

Source: Platts


Us coal production 1949 2006 million short tons
US Coal Production, 1949-2006 China, and USA(Million Short Tons)

U.S. Department of Energy


Us coal production by rank 2006
US Coal Production by Rank China, and USA(2006)

Source: EIA, International Energy


Us lignite composition
US Lignite Composition China, and USA

  • The lignite in North Dakota and Texas have a high moisture content

    • 20 to 40 weight percent

  • A low heating value

    • 5,000 to 7,500 British thermal units per pound [Btu/lb], on a wet basis


Great River Energy China, and USA

Large Scale US DOE Demo Project

Lignite Fuel Enhancement - applicable to power plants burning inherentlyhigh-moisture coals.

Achieving higher plant efficiencies, lower operating costs, and lower emissions.

Total Project funding: $25.6 million (DOE share: $11 million).

Feeder

Wet Coal

To Boiler

Baghouse

Hopper

Fluidized Bed 1

Cyclone

546 MWe Coal Creek Station

Underwood, ND

Fluidized Bed 2

Two-Stage Fluidized Bed Lignite Dryer System using Waste Heat


Efficiency improvements of coal fired electric generating units
Efficiency Improvements of Coal-Fired Electric Generating Units

  • U.S. coal fleet current operating heat rate is 10,400 Btu/kWh

  • Efficiency of a new power plant is largely a function of economic choice

  • To produce higher efficiencies, higher pressure and temperatures are required

  • Power plant efficiency can add value by reducing the amount of fuel used and thereby the amount of CO2 emitted


Conclusions
Conclusions Units

  • Energy Produced by Coal Is Expected to Increase by 50% in the next 20-30 Years

  • Increased Efficiency of Existing & New Coal Fleet is an Imperative

  • Characteristics of Coal Sources Is Changing

  • Research Concerning Coal Drying is Critical


Discussion
Discussion Units

  • Questions

  • Comments


India
India Units


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Extra info
Extra Info Units

  • Background Materials on R&D


Electricity Generation Capacity by Fuel Type in 2005 (%) China, India, and USA

Data Source: Platts UDI, 2005


Age of Existing Coal-Fired Units in 2005 (Number of Units) in India, China, and USA

Data Source: Platts UDI, 2005


Additional slides on great river energy

Additional Slides on in India, China, and USAGreat River Energy

DOE Factsheet


Great river energy
Great River Energy in India, China, and USA

  • Increasing Power Plant Efficiency: Lignite Fuel Enhancement

    • The objective of this project is to demonstrate that the moisture reduction of lignite coal will increase its value as a fuel in power plants

  • The project will be conducted at the Great River Energy’s Coal Creek Station in Underwood, North Dakota.

    • The demonstration activities

      will focus on using waste heat

      in the plant to lower the

      moisture content of lignite

      (typically about 40 percent moisture)

Coal Creek Station


Increasing power plant efficiency lignite fuel enhancement
Increasing Power Plant Efficiency: Lignite Fuel Enhancement in India, China, and USA

  • This technology could be applied to increase the generating capacity, efficiency, and cost-effectiveness of units that burn high-moisture coal.

  • Currently in the U.S., units totaling more than 100 GW installed capacity are burning coal with high moisture content.

  • Application of this technology could result in a reduction in the emissions from coal-fired power plants because the plants will require less coal after it is dried to produce the same amount of power.

  • In this project, the moisture in the lignite would be lowered by about ten percentage points.

  • This technology increases the efficiency of plants burning lignite and other high moisture coals.


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