Reducing GHG emissions by co-utilization of coal with natural gas or biomass

Journal Article · Thu Jul 01 04:00:00 EDT 2004 · International Journal of Power and Energy Systems

DOI:https://doi.org/10.2316/Journal.203.2004.3.203-3410· OSTI ID:20490069

Smith, I M ^[1]

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1. IEA Clean Coal Centre, London (United Kingdom)

Energy reserves price and security of supply issues are discussed in the context of the prospects for coal and policies to reduce greenhouse gas (GHG) emissions. Coal is projected to remain a major source of energy, with most of the demand growth in developing countries. Currently available power-generating technologies, deploying coal with natural gas or biomass, are examined. Examples of successful, partial substitution of coal by other fuels in power stations are highlighted, including the GHG emissions reductions achieved as well as the costs where available. Among various options, hybrid gasification and parallel cofiring of coal with biomass and natural gas appear to have the greatest potential to reduce GHG emissions. Much may also be achieved by cofiring, reburning, and repowering with gas turbines. The best method differs between different power systems. Co-utilization of biomass with coal is a least-cost option to reduce GHG emissions where the fuel prices are comparable, usually due to subsidies or taxes. The role of biomass is likely to increase due to greater use of subsidies, carbon taxes, and emissions trading within the context of the Kyoto Protocol. This should provide opportunities for clean coal technology transfer and diffusion, including biomass co-utilization. 32 refs., 1 fig., 3 tabs.

• OSTI ID: 20490069
• Journal Information: International Journal of Power and Energy Systems, Journal Name: International Journal of Power and Energy Systems Journal Issue: 3 Vol. 24; ISSN 1078-3466
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
03 NATURAL GAS
09 BIOMASS FUELS
20 FOSSIL-FUELED POWER PLANTS
29 ENERGY PLANNING, POLICY, AND ECONOMY
BIOMASS
CARBON DIOXIDE
COAL
COAL GASIFICATION
COCOMBUSTION
COMBINED-CYCLE POWER PLANTS
COPROCESSING
COST
ECONOMIC ANALYSIS
FLUIDIZED-BED COMBUSTION
FUEL SUBSTITUTION
GAS TURBINES
GASIFICATION
GREENHOUSE GASES
HYBRID SYSTEMS
MITIGATION
NATURAL GAS
POWER GENERATION
STAGED COMBUSTION
STRAW
WOOD FUELS