TECHNICAL PAPERS: Gas Turbines: Cycle Innovations

Chemical-Looping Combustion for Combined Cycles With CO2 Capture

[+] Author and Article Information
Stefano Consonni, Giovanni Lozza, Giampaolo Pelliccia

Dipartiamento di Energetica, Politecnico di Milano, Milan, Italy

Stefano Rossini, Francesco Saviano

Enitecnologie, San Donato Milanese, Milan, Italy

J. Eng. Gas Turbines Power 128(3), 525-534 (Jun 13, 2006) (10 pages) doi:10.1115/1.1850501 History: Received October 01, 2003; Revised March 01, 2004; Online June 13, 2006
Copyright © 2006 by ASME
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Chemical looping combustion concept
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Simplified scheme of CLC integrated with a combined cycle
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Efficiency vs specific work of unfired systems
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Sensitivity to the mass fraction of inert material in the solids circulating in the reactors
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Second-law losses for unfired cycles
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Comparison between the heat rate and the CO2 emissions of fired CLC-CC systems with those of unfired CLC-CCs (point “U”) and those of conventional NG-fired CC (point “C”). In all cases, the temperature at the outlet of the reduction reactor is 850°C. A generation system comprising unfired CLC-CCs and conventional CCs would lie on the line connecting points C and U.
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Net efficiency and CO2 emission vs specific work of fired CLC-CC systems. In all cases, the temperature at the outlet of the oxidation reactor is 850°C.
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Second-law losses for fired cycles with Tmax,CLC=850°C
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Specific investment cost of a power plant with CO2 capture that gives the same COE of a NG-fired CC without CO2 capture. The points marked on the lines identify the situation of the plants in Table 8.




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