This paper presents a theoretical thermodynamic analysis of a zero-atmospheric emissions power plant. In this power plant, methane is combusted with oxygen in a gas generator to produce the working fluid for the turbines. The combustion produces a gas mixture composed of steam and carbon dioxide. These gases drive multiple turbines to produce electricity. The turbine discharge gases pass to a condenser where water is captured. A stream of pure carbon dioxide then results that can be used for enhanced oil recovery or for sequestration. The analysis considers a complete power plant layout, including an air separation unit, compressors and intercoolers for oxygen and methane compression, a gas generator, three steam turbines, a reheater, two preheaters, a condenser, and a pumping system to pump the carbon dioxide to the pressure required for sequestration. This analysis is based on a 400 MW electric power generating plant that uses turbines that are currently under development by a U.S. turbine manufacturer. The high-pressure turbine operates at a temperature of 1089 K (1500°F) with uncooled blades, the intermediate-pressure turbine operates at 1478 K (2200°F) with cooled blades and the low-pressure turbine operates at 998 K (1336°F). The power plant has a net thermal efficiency of 46.5%. This efficiency is based on the lower heating value of methane, and includes the energy necessary for air separation and for carbon dioxide separation and sequestration.
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January 2004
Technical Papers
Thermodynamic Analysis of Zero-Atmospheric Emissions Power Plant
Joel Martinez-Frias,
e-mail: martinezfriasl@llnl.gov
Joel Martinez-Frias
Lawrence Livermore National Laboratory, 7000 East Avenue, L-644, Livermore, CA 94551
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Salvador M. Aceves,
Salvador M. Aceves
Lawrence Livermore National Laboratory, 7000 East Avenue, L-644, Livermore, CA 94551
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J. Ray Smith,
J. Ray Smith
Lawrence Livermore National Laboratory, 7000 East Avenue, L-644, Livermore, CA 94551
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Harry Brandt
Harry Brandt
Clean Energy Systems, Inc., 2530 Mercantile Drive, Suite A, Rancho Cordova, CA 95742
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Joel Martinez-Frias
Lawrence Livermore National Laboratory, 7000 East Avenue, L-644, Livermore, CA 94551
e-mail: martinezfriasl@llnl.gov
Salvador M. Aceves
Lawrence Livermore National Laboratory, 7000 East Avenue, L-644, Livermore, CA 94551
J. Ray Smith
Lawrence Livermore National Laboratory, 7000 East Avenue, L-644, Livermore, CA 94551
Harry Brandt
Clean Energy Systems, Inc., 2530 Mercantile Drive, Suite A, Rancho Cordova, CA 95742
Contributed by the Advanced Energy Systems Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the AES Division July 2002; final revision received March 2003. Associate Editor: G. M. Reistad.
J. Eng. Gas Turbines Power. Jan 2004, 126(1): 2-8 (7 pages)
Published Online: March 2, 2004
Article history
Received:
July 1, 2002
Revised:
March 1, 2003
Online:
March 2, 2004
Citation
Martinez-Frias, J., Aceves , S. M., Smith, J. R., and Brandt, H. (March 2, 2004). "Thermodynamic Analysis of Zero-Atmospheric Emissions Power Plant ." ASME. J. Eng. Gas Turbines Power. January 2004; 126(1): 2–8. https://doi.org/10.1115/1.1635399
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