A new proposed approach for future large-scale de-carbonization coal-fired power plants

Abstract The post-combustion CO2 capture technology provides a feasible and promising method for large-scale CO2 capture in coal-fired power plants. However, the large-scale CO2 capture in conventionally designed coal-fired power plants is confronted with various problems, such as the selection of the steam extraction point and steam parameter mismatch. To resolve these problems, an improved design idea for the future coal-fired power plant with large-scale de-carbonization is proposed. A main characteristic of the proposed design is the adoption of a back-pressure steam turbine, which extracts the suitable steam for CO2 capture and ensures the stability of the integrated system. A new let-down steam turbine generator is introduced to retrieve the surplus energy from the exhaust steam of the back-pressure steam turbine when CO2 capture is cut off. Results show that the net plant efficiency of the improved design is 2.56% points higher than that of the conventional one when CO2 capture ratio reaches 80%. Meanwhile, the net plant efficiency of the improved design maintains the same level to that of the conventional design when CO2 capture is cut off. Finally, the match between the extracted steam and the heat demand of the reboiler is significantly increased, which solves the steam parameter mismatch problem. The techno-economic analysis indicates that the proposed design is a cost-effective approach for the large-scale CO2 capture in coal-fired power plants.

[1]  Irene Bolea,et al.  Integration of post-combustion capture and storage into a pulverized coal-fired power plant , 2010 .

[2]  Eric Croiset,et al.  Techno-economic study of CO2 capture from an existing coal-fired power plant: MEA scrubbing vs. O2/CO2 recycle combustion , 2003 .

[3]  Miguel Angel Gonzalez-Salazar,et al.  Comparison of Current and Advanced Post-Combustion CO2 Capture Technologies for Power Plant Applications , 2012 .

[4]  Young-Min Kim,et al.  Potential and Evolution of Compressed Air Energy Storage: Energy and Exergy Analyses , 2012, Entropy.

[5]  Bing Zhu,et al.  Technoeconomic assessment of China’s indirect coal liquefaction projects with different CO2 capture alternatives , 2011 .

[6]  Alfons Kather,et al.  Evaluating the impact of an ammonia-based post-combustion CO2 capture process on a steam power plant with different cooling water temperatures , 2012 .

[7]  Hana Gerbelová,et al.  The effect of retrofitting Portuguese fossil fuel power plants with CCS , 2013 .

[8]  Yongping Yang,et al.  Analysis and optimization of CO2 capture in an existing coal-fired power plant in China , 2013 .

[9]  Alfons Kather,et al.  Optimised integration of post-combustion CO2 capture process in greenfield power plants , 2010 .

[10]  Alfons Kather,et al.  Post-combustion CO2-capture from coal-fired power plants: Preliminary evaluation of an integrated chemical absorption process with piperazine-promoted potassium carbonate , 2008 .

[11]  A. Stodola.  Steam and gas turbines , 1927 .

[12]  Linda Barelli,et al.  An energetic–exergetic analysis of a residential CHP system based on PEM fuel cell , 2011 .

[13]  Amar Nath Samanta,et al.  Simulation and parametric study of post combustion CO2 capture process using (AMP + PZ) blended solvent , 2014 .

[14]  Chakib Bouallou,et al.  CO2 capture study in advanced integrated gasification combined cycle , 2007 .

[15]  André Faaij,et al.  Techno-economic performance and challenges of applying CO2 capture in the industry: A case study of five industrial plants , 2013 .

[16]  Luc G. Fréchette,et al.  Design of a Microfabricated Rankine Cycle Steam Turbine for Power Generation , 2003 .

[17]  Umberto Desideri,et al.  A simplified method for the evaluation of the performance of coal fired power plant with carbon capture , 2014 .

[18]  Álvaro Restrepo,et al.  Exergetic and environmental analysis of a pulverized coal power plant , 2012 .

[19]  Alfons Kather,et al.  Derivation of correlations to evaluate the impact of retrofitted post-combustion CO2 capture processes on steam power plant performance , 2011 .

[20]  Jon Gibbins,et al.  Retrofitting CO2 capture ready fossil plants with post-combustion capture. Part 1: Requirements for supercritical pulverized coal plants using solvent-based flue gas scrubbing , 2009 .

[21]  C. Bouallou,et al.  Pre-combustion, post-combustion and oxy-combustion in thermal power plant for CO2 capture , 2010 .

[22]  Luis M. Romeo,et al.  Integration of power plant and amine scrubbing to reduce CO2 capture costs , 2008 .

[23]  Zhihua Wang,et al.  Up-to-date life cycle assessment and comparison study of clean coal power generation technologies in China , 2013 .

[24]  Edward S Rubin,et al.  A technical, economic, and environmental assessment of amine-based CO2 capture technology for power plant greenhouse gas control. , 2002, Environmental science & technology.

[25]  Dong Wang,et al.  Incorporating IGCC and CaO sorption-enhanced process for power generation with CO2 capture , 2012 .

[26]  R. Williams,et al.  Co-production of hydrogen, electricity and CO2 from coal with commercially ready technology. Part B: Economic analysis , 2005 .

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

[28]  Björn Rolfsman,et al.  Combined heat-and-power plants and district heating in a deregulated electricity market , 2004 .

[29]  Jon Gibbins,et al.  Scope for reductions in the cost of CO2 capture using flue gas scrubbing with amine solvents , 2004 .

[30]  Sevket Durucan,et al.  Life cycle modelling of fossil fuel power generation with post-combustion CO2 capture , 2009 .

[31]  Olav Bolland,et al.  Optimized process configurations of post-combustion CO2 capture for natural-gas-fired power plant—Exergy analysis , 2011 .

[32]  Shanlin Yang,et al.  Energy conservation and emission reduction of China’s electric power industry , 2015 .

[33]  Luis M. Romeo,et al.  Optimizing CO2 avoided cost by means of repowering , 2009 .

[34]  Eric Croiset,et al.  Simulation of CO2 capture using MEA scrubbing: a flowsheet decomposition method , 2005 .

[35]  Elmar Kriegler,et al.  Role of technologies in energy-related CO2 mitigation in China within a climate-protection world: A scenarios analysis using REMIND , 2014 .

[36]  Jiuping Xu,et al.  Greenhouse Gas Control , 2014 .

[37]  Yincheng Guo,et al.  Process simulations of large-scale CO2 capture in coal-fired power plants using aqueous ammonia solution , 2013 .

[38]  Yongping Yang,et al.  Integration of the steam cycle and CO2 capture process in a decarbonization power plant , 2014 .

[39]  Bin Huang,et al.  Industrial test and techno-economic analysis of CO2 capture in Huaneng Beijing coal-fired power station , 2010 .

[40]  Giampaolo Manfrida,et al.  Exergy and Exergoeconomic Model of a Ground-Based CAES Plant for Peak-Load Energy Production , 2013 .

[41]  Jizhen Liu,et al.  A New Measurement Model for Main Steam Flow of Power Plants , 2011 .

[42]  Jon Gibbins,et al.  Effective retrofitting of post-combustion CO2 capture to coal-fired power plants and insensitivity of CO2 abatement costs to base plant efficiency , 2011 .