Back
 JEP  Vol.4 No.8 B , August 2013
Environmental Impact Assessment of GHG Emissions Generated by Coal Life Cycle and Solutions for Reducing CO2
Abstract: The objective of this paper consists of evaluating the coal life cycle and proposing technical solutions for reducing GHG emissions. After applying the life cycle assessment on the coal life cycle, it was noticed that the power engineering stage has a bigger environmental impact on different indicator impacts. In order to reduce the GHG emissions the CO2 chemical absorption process was integrated in the power plant based on the circulating fluidized bed combustion technology. Two cases were analyzed: super-critical and ultra-supra-critical parameters. For each case the environmental indicators (global warming potential, abiotic depletion potential, human toxicity potential, photochemical potential, acidification potential, eutrophisation potential) were evaluated in order to estimate the environmental effects on the coal life cycle with CO2 capture process. After the integration of the CO2 capture post-combustion process into the power plant, the GHG emissions decreased from 450,760 CO2 equiv. tons to 75,937 CO2 equiv. tons for super-critical parameters and from 438122 CO2 equiv. tons to 73245 CO2 equiv. tons for ultra-supra-critical parameters respectively. In order to increase the absorption capacity of the MEA solvent the SO2 emissions were reduced from flue gases and consequently the acidification potential was reduced too in both cases. On the contrary, the amount of fuel increased in order to maintain the functional unit as a result of the efficiency penalty of the CO2 capture integration in the power plant.
Cite this paper: C. Dincă, C. Cormoş and H. Necula, "Environmental Impact Assessment of GHG Emissions Generated by Coal Life Cycle and Solutions for Reducing CO2," Journal of Environmental Protection, Vol. 4 No. 8, 2013, pp. 5-15. doi: 10.4236/jep.2013.48A2002.
References

[1]   “Statistical Review of World Energy BP,” 2010. www.bp.com

[2]   E. Tzimas, A. Mercier, C. C. Cormos and S. Peteves, “Trade-Off in Emissions of Acid Gas Pollutants and of Carbon Dioxide from Fossil Fuels Power Plants with Carbon Capture,” Energy Policy, Vol. 35, No. 8, 2007, pp. 3991-3998. doi:10.1016/j.enpol.2007.01.027

[3]   European Commission, “DG Energy and Transport (TREN), Strategic Energy Review,” 2009. http://ec.europa.eu/energy

[4]   “Intergovernmental Panel on Climate Change (IPCC), 4th Assessments Report, Climate Change,” 2007. www.ipcc.ch

[5]   European Commission, “Strategy on Climate Change: The Way Ahead for 2020 and Beyond,” 2007.

[6]   “Intergovernmental Panel on Climate Change (IPCC), Special Report, CO2 Capture and Storage,” 2005. www.ipcc.ch

[7]   J. D. Figueroa, T. Fout, S. Plasynski, H. McIlvired and R. Srivastava, “Advances in CO2 Capture Technology—The U.S. Department of Energy’s Carbon Sequestration Program,” International Journal of Greenhouse Gas Control, Vol. 2, No. 1, 2008, pp. 9-20. doi:10.1016/S1750-5836(07)00094-1

[8]   E. Favre, “Carbon Dioxide Recovery from Post-Combustion Processes: Can Gas Permeation Membranes Compete with Absorption,” Journal of Membrane Science, Vol. 294, No. 1-2, 2007, pp. 50-59. doi:10.1016/j.memsci.2007.02.007

[9]   E. Favre, R. Bounaceur and D. Roizard, “A Hybrid Process Combining Oxygen Enriched Air Combustion and Membrane Separation for Post Combustion Carbon Dioxide Capture,” Separation and Purification Technology, Vol. 68, No. 1, 2009, pp. 30-36. doi.org/10.1016/j.seppur.2009.04.003

[10]   S. C. Page, A. G. Williamson and I. G. Mason, “Carbon Capture and Storage: Fundamental Thermodynamics and Current Technology,” Energy Policy, Vol. 37, No. 9, 2009, pp. 3314-3324. doi:10.1016/j.enpol.2008.10.028

[11]   C. Dinca and A. Badea, “The Parameters Optimization for a CFBC Pilot Plant Experimental Study of Post-Combustion CO2 Capture by Reactive Absorption with MEA,” International Journal of Greenhouse Gas Control, Vol. 12, 2013, pp. 269-279. doi:10.1016/j.ijggc.2012.11.006

[12]   A. Kather and S. Linnenberg, “Evaluation of an Integrated Post-Combustion CO2 Capture Process for Varying Loads in a Coal-Fired Power Plant Using Monoethanolamine,” 4th International Conference on Clean Coal Technologies, Dresden, 2009.

[13]   J. Husebye, R. Anantharaman and S.-E. Fleten, “Technoeconomic Assessment of Flexible Solvent Regeneration & Storage for Base Load Coal-Fired Power Generation with Post Combustion CO2 Capture,” Energy Procedia, Vol. 4, 2011, pp. 2612-2619. doi:10.1016/j.egypro.2011.02.160

[14]   B. A. Oyenekan and G. T. Rochelle, “Energy Performance of Stripper Configurations for CO2 Capture by Aqueous Amine,” Industrial & Engineering Chemistry Research, Vol. 45, No. 8, 2006, pp. 2457-2464. doi:10.1021/ie050548k

[15]   M. S. Jassim and G. T. Rochelle, “Innovative Absorber/ Stripper Configurations for CO2 Capture by Aqueous Monoethanolamine,” Industrial & Engineering Chemistry Research, Vol. 45, No. 8, 2006, pp. 2465-2472. doi:10.1021/ie050547s

[16]   A. Lawal, M. Wang, P. Stephenson and O. Obi, “Demonstrating Full-Scale Post-Combustion CO2 Capture for Coal-Fired Power Plants through Dynamic Modelling and Simulation,” Fuel, Vol. 101, 2012, pp. 115-128. doi:10.1016/j.fuel.2010.10.056

[17]   C. Dinca, A. Badea, et al., “A Multi-Criteria Approach to Evaluate the Natural Gas Energy Systems,” Energy Policy, Vol. 35, No. 11, 2007, pp. 5754-5765, doi:10.1016/j.enpol.2007.06.024

[18]   L. Simon, E. Yannick, P. Graeme, Y. Artanto and K. Hungerbuhler, “Rate Based Modeling and Validation of a Carbon-Dioxide Pilot Plant Absorption Column Operating on Monoethanolamine,” Chemical Engineering Research and Design, Vol. 89, No. 9, 2011, pp. 1684-1692. doi:10.1016/j.cherd.2010.10.024

[19]   Y. Zhang, H. Chen, C. Chen, J. M. Plaza, R. Dugas and G. T. Rochelle, “Rate-Based Process Modeling Study of CO2 Capture with Aqueous Mono-Ethanolamine Solution,” Industrial & Engineering Chemistry Research, Vol. 48, No. 20, 2009, pp. 9233-9246. doi:10.1021/ie900068k

 
 
Top