Journal
FUEL
Volume 169, Issue -, Pages 50-57Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2015.12.005
Keywords
Oxy-fuel combustion; Carbon Capture and Storage (CCS); Economic evaluations
Categories
Funding
- Romanian National Authority for Scientific Research [PN-II-PT-PCCA-2011-3.2-0162, PN-II-ID-PCE-2011-3-0028]
- CNCS - UEFISCDI [PN-II-PT-PCCA-2011-3.2-0162, PN-II-ID-PCE-2011-3-0028]
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Power generation sector is facing important challenges to develop energy efficient solutions at the same time with reducing the greenhouse gas emissions (mainly CO2). Oxy-fuel combustion is a promising power generation technology for reducing both energy and cost penalties for CO2 capture. This paper presents a detailed techno-economic analysis for oxy-combustion power plant to generate about 350 MW net power with a carbon capture rate higher than 90%. Both fossil fuels (coal and lignite) and renewable energy sources (sawdust) were used to fuel a super-critical power plant (live steam parameters: 582 degrees C/29 MPa). The assessment is based on numerical analysis, the models of various power plant sub-systems being built in ChemCAD and Thermflow software. As benchmark option used to quantify the CO2 capture energy and cost penalties, the same super-critical power plant without CCS was considered. The investigated coal, lignite and sawdust oxy-combustion cases show an energy penalty of 9-12 net efficiency percentage points, 37-50% increase of total capital investment, the O&M costs are increasing with 7-15% and the electricity cost with 54-95% (all compared to coal-fuelled non-CCS case). Sensitivity studies were also performed to evaluate the influence of various economic parameters on electricity and CO2 avoidance costs. (C) 2015 Elsevier Ltd. All rights reserved.
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