Abstract
Increasing attention is being paid to the oxy-combustion technique of coal-fired power plants because CO2 produced from fossil fuel combustion can be captured and sequestrated by it. However, there are many questions about the economic properties of the oxy-combustion technique. In this paper, a detailed techno-economic evaluation study was performed on three typical power plants (2 × 300 MW subcritical, 2 × 600 MW supercritical, 2 × 1000 MW ultra supercritical), as conventional air fired and oxycombustion options in China, by utilizing the authoritative data published in 2010 for the design of coal-fired power plants. Techno-economic evaluation models were set up and costs of electricity generation, CO2 avoidance costs as well as CO2 capture costs, were calculated. Moreover, the effects of CO2 tax and CO2 sale price on the economic characteristics of oxy-combustion power plants were also considered. Finally, a sensitivity analysis for parameters such as coal sample, coal price, air separation unit price, flue gas treatment unit price, CO2 capture efficiency, as well as the air excess factor was conducted. The results revealed that: (1) because the oxy-combustion technique has advantages in thermal efficiency, desulfurization efficiency and denitration efficiency, oxy-combustion power plants will reach the economic properties of conventional air fired power plants if, (a) the CO2 emission is taxed and the high purity CO2 product can be sold, or (b) there are some policy preferences in financing and coal price for oxy-combustion power plants, or (c) the power consumption and cost of air separation units and flue gas treatment units can be reduced; (2) from subcritical plants to supercritical and finally ultra-supercritical plants, the economics are improving, regardless of whether they are conventional air fired power plants or oxy-combustion power plants.
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References
Wang S. The global warming debate. Chinese Sci Bull, 2010, 55: 1961–1962
Zheng Y, Li H, Wu R, et al. Impact of technology advances on China’s CO2 emission reduction. Chinese Sci Bull, 2010, 55: 1983–1992
Okawa M, Kimura N, Kiga T, et al. Trial design for a CO2 recovery power plant by burning pulverized coal in O2/CO2. Energ Convers Manage, 1997, 38(suppl): 123–127
Anderssen K, Johnsson F, Stromberg L. Large scale CO2 capture applying the concept of O2/CO2 combustion to commercial process data. VGB Powertech, 2003, 83: 29–33
Marion J, Nsakala N, Bozzuto C, et al. Engineering feasibility of CO2 capture on an existing US colafired power plant. In: Proceedings of the 26th International Conference on Coal Utilization and Fuel Systems. Clearwater, FL, USA: 2001. 941–952
Molburg J C, Doctor R D, Brockmeier N F S P. CO2 capture from Pc boilers with O2-firing. In: Eighteenth annual international Pittsburgh coal conference. Newcastle, NSW, Australia: 2001
Singh D, Croiset E, Douglas P L, et al. Techno-economic study of CO2 capture from an existing coal-fired power plant: MEA scrubbing vs. O2/CO2 recycle combustion. Energ Convers Manage, 2003, 44: 3073–3091
Kanniche M, Gros-Bonnivard R, Jaud P, et al. Pre-combustion, postcombustion and oxy-combustion in thermal power plant for CO2 capture. Appl Therm Eng, 2010, 30: 53–62
Xiong J, Zhao H, Liu Z, et al. Techno-economic evaluation of O2/CO2 recycle combustion system and mea scrubbing system based on thermoeconomics. J Engineer Thermophy, 2008, 29: 1625–1629
Xiong J, Zhao H, Zheng C, et al. An economic feasibility study of O2/CO2 recycle combustion technology based on existing coal-fired power plants in China. Fuel, 2009, 88: 1135–1142
Electric Power Planning and design Institute for China Power Engineering Consulting Group Corporation. Reference cost indexes in quota design for coal-fired projects (2009 levels) (in Chinese). Beijing: China Electric Power Press, 2010
Simbeck D R. CO2 mitigation economics for existing coal-fired power plants. In: First national conference on carbon sequestration. Washington DC: 2001
Andersson K, Johnsson F. Process evaluation of an 865 MWe lignite fired O2/CO2 power plant. Energ Convers Manage, 2006, 47: 3487–3498
Sun K, Zhong Q. Design, Construction and Operation of Flue Gas Desulfurization Systems in Coal-Fired Power Plants. Beijing: Chemistry Industry Press, 2005
Sun K, Zhong Q. Flue gas denitration technology and engineering applications in coal-fired power plants (in Chinese). Beijing: Chemistry Industry Press, 2007
Liu X. SCR DeNOx technologies applied in the 300 MW units of Hengyun Power Plant. Electric Power, 2006, 39: 86–89
Huang M. Environmental and economic analysis of FGD projects in Jiangsu province. Electric Power Environ Protect, 2006, 22: 54–57
Liu D, Yang Y, Yang K, et al. Research on the production cost of coal-fired power generating unit with consideration of environmental costs. Electric Power, 2005, 38: 24–28
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Xiong, J., Zhao, H. & Zheng, C. Techno-economic evaluation of oxy-combustion coal-fired power plants. Chin. Sci. Bull. 56, 3333–3345 (2011). https://doi.org/10.1007/s11434-011-4707-5
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DOI: https://doi.org/10.1007/s11434-011-4707-5