This paper presents the thermodynamic and cost analysis of a coal-based zero-atmospheric emissions electric power plant. The approach involves an oxygen-blown coal gasification unit. The resulting synthetic gas (syngas) is combusted with oxygen in a gas generator to produce the working fluid for the turbines. The combustion produces a gas mixture composed almost entirely 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 carbon dioxide then results that can be used for enhanced oil recovery or for sequestration. The term zero emission steam technology is used to describe this technology. We present the analysis of a electric power plant. The power plant has a net thermal efficiency of 39%. This efficiency is based on the lower heating value of the coal, and includes the energy necessary for coal gasification, air separation, and for carbon dioxide separation and sequestration. This paper also presents an analysis of the cost of electricity and the cost of conditioning carbon dioxide for sequestration. Electricity cost is compared for three different gasification processes (Texaco, Shell, and Koppers-Totzek) and two types of coals (Illinois 6 and Wyodak). COE ranges from , indicating a 3.4% sensitivity to the gasification processes considered and the coal types used.
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e-mail: saceves@llnl.gov
e-mail: hbrandt@cleanenergysystems.com
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March 2008
Research Papers
A Coal-Fired Power Plant With Zero-Atmospheric Emissions
Joel Martinez-Frias,
Joel Martinez-Frias
Lawrence Livermore National Laboratory
, 7000 East Avenue, L-644, Livermore, CA 94551
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Salvador M. Aceves,
e-mail: saceves@llnl.gov
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
e-mail: hbrandt@cleanenergysystems.com
Harry Brandt
Clean Energy Systems, Inc.
, 11330 Sunco Drive, Suite A, Rancho Cordova, CA 95670
Search for other works by this author on:
Joel Martinez-Frias
Lawrence Livermore National Laboratory
, 7000 East Avenue, L-644, Livermore, CA 94551
Salvador M. Aceves
Lawrence Livermore National Laboratory
, 7000 East Avenue, L-644, Livermore, CA 94551e-mail: saceves@llnl.gov
J. Ray Smith
Lawrence Livermore National Laboratory
, 7000 East Avenue, L-644, Livermore, CA 94551
Harry Brandt
Clean Energy Systems, Inc.
, 11330 Sunco Drive, Suite A, Rancho Cordova, CA 95670e-mail: hbrandt@cleanenergysystems.com
J. Eng. Gas Turbines Power. Mar 2008, 130(2): 023005 (7 pages)
Published Online: February 21, 2008
Article history
Received:
September 15, 2006
Revised:
May 29, 2007
Published:
February 21, 2008
Citation
Martinez-Frias, J., Aceves, S. M., Ray Smith, J., and Brandt, H. (February 21, 2008). "A Coal-Fired Power Plant With Zero-Atmospheric Emissions." ASME. J. Eng. Gas Turbines Power. March 2008; 130(2): 023005. https://doi.org/10.1115/1.2771255
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