This paper discusses novel schemes of combined cycle, where natural gas is chemically treated to remove carbon, rather than being directly used as fuel. Carbon conversion to is achieved before gas turbine combustion. Therefore can be removed from fuel (rather than from exhausts, thus utilizing less demanding equipment) and made available for long-term storage, to avoid dispersion toward the atmosphere and the consequent contribution to the greenhouse effect. The strategy here proposed to achieve this goal is natural gas partial oxidation. The second part of the paper will address steam/methane reforming. Partial oxidation is an exothermic oxygen-poor combustion devoted to CO and production. The reaction products are introduced in a multiple stage shift reactor converting CO to Carbon dioxide is removed by means of physical or chemical absorption processes and made available for storage, after compression and liquefaction. The resulting fuel mainly consists of hydrogen and nitrogen, thus gas turbine exhausts are virtually devoid of The paper discusses the selection of some important parameters necessary to obtain a sufficient level of conversion in the various reactors (temperature and pressure levels, methane-to-air or methane-to-steam ratios) and their impact on the plant integration and on the thermodynamic efficiency. Overall performance (efficiency, power output, and carbon removal rate) is predicted by means of a computational tool developed by the authors. The results show that a net efficiency of 48.5 percent, with a 90 percent removal, can be obtained by combined cycles based on large heavy duty machines of the present technological status, either by using chemical or physical absorption.
Skip Nav Destination
Article navigation
January 2002
Technical Papers
Natural Gas Decarbonization to Reduce CO2 Emission From Combined Cycles—Part I: Partial Oxidation
G. Lozza,
G. Lozza
Dipartimento di Energetica, Politecnico di Milano, Piazza Leonardo da Vinci, 32 Milan 20133, Italy
Search for other works by this author on:
P. Chiesa
P. Chiesa
Dipartimento di Energetica, Politecnico di Milano, Piazza Leonardo da Vinci, 32 Milan 20133, Italy
Search for other works by this author on:
G. Lozza
Dipartimento di Energetica, Politecnico di Milano, Piazza Leonardo da Vinci, 32 Milan 20133, Italy
P. Chiesa
Dipartimento di Energetica, Politecnico di Milano, Piazza Leonardo da Vinci, 32 Milan 20133, Italy
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Munich, Germany, May 8–11, 2000; Paper 00-GT-163. Manuscript received by IGTI November 1999; final revision received by ASME Headquarters February 2000. Associate Editor: D. R. Ballal.
J. Eng. Gas Turbines Power. Jan 2002, 124(1): 82-88 (7 pages)
Published Online: February 1, 2000
Article history
Received:
November 1, 1999
Revised:
February 1, 2000
Citation
Lozza , G., and Chiesa, P. (February 1, 2000). "Natural Gas Decarbonization to Reduce CO2 Emission From Combined Cycles—Part I: Partial Oxidation ." ASME. J. Eng. Gas Turbines Power. January 2002; 124(1): 82–88. https://doi.org/10.1115/1.1395581
Download citation file:
Get Email Alerts
Shape Optimization of an Industrial Aeroengine Combustor to reduce Thermoacoustic Instability
J. Eng. Gas Turbines Power
Dynamic Response of A Pivot-Mounted Squeeze Film Damper: Measurements and Predictions
J. Eng. Gas Turbines Power
Review of The Impact Of Hydrogen-Containing Fuels On Gas Turbine Hot-Section Materials
J. Eng. Gas Turbines Power
Effects of Lattice Orientation Angle On Tpms-Based Transpiration Cooling
J. Eng. Gas Turbines Power
Related Articles
Natural Gas Decarbonization to Reduce CO 2 Emission From Combined Cycles—Part II: Steam-Methane Reforming
J. Eng. Gas Turbines Power (January,2002)
Analysis of Gas-Steam Combined Cycles With Natural Gas Reforming and CO 2 Capture
J. Eng. Gas Turbines Power (July,2005)
Chemical-Looping Combustion for Combined Cycles With CO 2 Capture
J. Eng. Gas Turbines Power (July,2006)
The Role of Carbon Monoxide in NO 2 Plume Formation
J. Eng. Gas Turbines Power (April,2000)
Related Proceedings Papers
Related Chapters
Introduction
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration
Combined Cycle Power Plant
Energy and Power Generation Handbook: Established and Emerging Technologies
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential