Exploring the potential for improvement of the energy performance of coal fired power plants with post-combustion capture of carbon dioxide

Abstract The application of post-combustion capture (PCC) processes in coal fired power stations can result in large reductions of the CO 2 -emissions, but the consequential decrease in generation efficiency is an important draw-back. The leading PCC technology is based on chemical absorption processes as this technology is the one whose scale-up status is closest to full-scale capture in power plants. The energy performance of this process is analysed in this contribution. The analysis shows that the potential for improvement of the energy performance is quite large. It is demonstrated that further development of the capture technology and the power plant technology can lead to generation efficiencies for power plants with 90% CO 2 capture which are equivalent to the current generation efficiencies without CO 2 capture, i.e. 0.4 (HHV), leading to an additional resource consumption of 16%. These improvements are possible throughout a combined improvement for the capture process and power generation processes.

[1]  B. Metz IPCC special report on carbon dioxide capture and storage , 2005 .

[2]  R. Viswanathan,et al.  Materials for ultra-supercritical coal-fired power plant boilers , 2006 .

[3]  Henry W. Pennline,et al.  Semi-batch absorption and regeneration studies for CO2 capture by aqueous ammonia , 2005 .

[4]  Wim Turkenburg,et al.  Techno-economic analysis of natural gas combined cycles with post-combustion CO2 absorption, including a detailed evaluation of the development potential , 2007 .

[5]  Edward S. Rubin,et al.  Evaluation of potential cost reductions from improved amine-based CO2 capture systems , 2006 .

[6]  Sheng Dai,et al.  Examination of the Potential of Ionic Liquids for Gas Separations , 2005 .

[7]  Sven Kjær Status and future of advanced PF power plants , 1996 .

[8]  E. S. Hamborg,et al.  Dissociation constants and thermodynamic properties of amino acids used in CO2 absorption from (293 to 353) K , 2007 .

[9]  John Davison,et al.  Performance and costs of power plants with capture and storage of CO2 , 2007 .

[10]  Moetaz I. Attalla,et al.  Simulation of Enthalpy and Capacity of CO2 Absorption by Aqueous Amine Systems , 2008 .

[11]  W. Wagner,et al.  A New Equation of State for Carbon Dioxide Covering the Fluid Region from the Triple‐Point Temperature to 1100 K at Pressures up to 800 MPa , 1996 .

[12]  P. Feron,et al.  Exergy analysis of alkanolamine-based CO2 removal unit with AspenPlus , 2004 .

[13]  K. H. Hoffmann,et al.  Evaluating the Efficiency Frontier of Separation Processes , 2001 .

[14]  János M. Beér,et al.  High efficiency electric power generation: The environmental role , 2007 .

[15]  Erling Halfdan Stenby,et al.  Modeling of CO2 absorber using an AMP solution , 2006 .

[16]  A. Trejo,et al.  Solubilities of carbon dioxide and hydrogen sulfide in propylene carbonate, N-methylpyrrolidone and sulfolane , 1988 .

[17]  I. L. Leites Thermodynamics of CO2 solubility in mixtures monoethanolamine with organic solvents and water and commercial experience of energy saving gas purification technology , 1998 .

[18]  Olav Bolland,et al.  A novel methodology for comparing CO2 capture options for natural gas-fired combined cycle plants , 2003 .

[19]  Rudolph Blum,et al.  High-efficiency coal-fired power plants development and perspectives , 2006 .

[20]  N. Lior,et al.  The theory and practice of energy saving in the chemical industry: some methods for reducing thermodynamic irreversibility in chemical technology processes , 2003 .

[21]  G. Versteeg,et al.  CO2 capture from power plants. Part I: A parametric study of the technical performance based on monoethanolamine , 2007 .

[22]  Daniel Chinn,et al.  Cost efficient amine plant design for post combustion CO2 capture from power plant flue gas , 2005 .