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Research Papers: Gas Turbines: Electric Power

Technology Options for Gas Turbine Power Generation With Reduced CO2 Emission

[+] Author and Article Information
Timothy Griffin1

 ALSTOM Power Technology Center, CH-5405 Baden-Daettwil, Switzerland

Dominikus Bücker

 ALSTOM Power Technology Center, CH-5405 Baden-Daettwil, Switzerland

Allen Pfeffer

 Alstom Power Plant Laboratories, Windsor, CT 06095

1

Present address: University of Applied Sciences, Northwestern Switzerland, CH-5210 Windisch, Switzerland.

J. Eng. Gas Turbines Power 130(4), 041801 (Apr 24, 2008) (8 pages) doi:10.1115/1.2898717 History: Received September 01, 2005; Revised October 03, 2007; Published April 24, 2008

ALSTOM Power R&D laboratories run various programs aimed at finding options that reduce or avoid CO2 emissions through the following: (a) high efficiency power generation equipment to utilize fossil fuels with the lowest possible emissions, and (b) technologies to remove and sequester CO2 created in power plants in an environmentally and economically favorable manner. In this paper, an overview of ongoing CO2 mitigation activities for gas turbine power generation is addressed. Energy efficiency improvements for both new and existing fossil fuel power plants are briefly reviewed. Customer requirements for future power plants with reduced CO2 emissions are discussed. Novel power generation cycles with exhaust gas recirculation for enhanced CO2 removal are introduced and evaluated. Conclusions are drawn regarding their efficiency, energy consumption, and technical feasibility.

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Copyright © 2008 by American Society of Mechanical Engineers
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Figures

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Figure 1

2002 total CO2 emissions from fossil fuel combustion by sector (values taken from Ref. 1)

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Figure 2

CO2 emission rates from various fossil fuel technologies. The emissions shown in this chart are based on a range of efficiencies (from Ref. 1).

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Figure 3

Evolution of efficiency in various power generation technologies. Past and future (from Ref. 1).

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Figure 4

Zero emission gas turbine-based power generation concept (including an integrated membrane for production of oxygen)

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Figure 5

Exhaust gas CO2 removal in a gas turbine with exhaust gas recirculation

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Figure 6

“Postcompression” CO2 capture

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Figure 7

“Postcompression” CO2 capture as applied to the GT26 cycle

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Figure 8

Expected CO2 removal rates for postcompression capture options applied to the GT26

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Figure 9

Expected costs per ton avoided CO2 emission for postcompression capture options applied to the GT26. (These costs include liquefaction and compression of CO2 to 100bars, but exclude costs for its transport and storage.)

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