A new type of power supply which was called oxy-fuel combustion power plant was introduced to reduce greenhouse gasses emission. In this paper the volatile emission characteristic of pulverized coal is studied under air atmosphere and oxy-fuel atmosphere. Combustion experiments of Datong bituminous coal were carried out in a wire mesh reactor at heating rates of 1 K/s, 10 K/s and 1000 K/s respectively under air and O 2 /CO 2 atmosphere conditions in order to investigate the volatile emission characteristic. The concentrations of volatile (mainly CO and CH 4 ) emission were on-line measured by infrared gas analyzer. It was indicated that the concentrations of CO and CH 4 in O 2 /CO 2 atmosphere were higher than those in air. The direct oxidation of carbon and gasification reaction between carbon and CO 2 are the main causes of the increased amount of CO. The higher concentration of CO 2 also results in the increased amount of CH 4 in O 2 /CO 2 conditions.
S. Gunter, A. M. Leema, S. Uwe and M. Jorg, “Oxy-Fuel Coal Combustion—A Review of the Current State of the Art,” International Journal of Greenhouse Gas Control, Vol. 5, No. S1, 2011, pp. 16-35. doi:10.1016/j.ijggc.2011.05.020
F. W. Terry, “Combustion Processes for Carbon Capture,” Proceedings of the Combustion Institute, Vol. 31, No. 1, 2007, pp. 31-47. doi:10.1016/j.proci.2006.08.123
Z. Liu, “Build Strong Smart Grid as Pillar of Sound and Rapid Development,” Power System and Clean Energy, Vol. 25, No. 9, 2009, pp. 1-3. (in Chinese)
EPRI, “Power Delivery System and Electricity Markets of the Future,” Palo Alto, CA, EPRI, 2003.
M. Amin and P. F. Schewe, “Preventing Blackouts: Building a Smarter Power GRID,” Scientific American, 2008, pp. 60-67.
B. T. Maja, B. Jacob, A. J. Peter, G. Peter, D. J. Anker, “Oxy-Fuel Combustion of Solid Fuels,” Progress in Energy and Combustion Science, Vol. 36, No. 5, 2010, pp. 581-625. doi:10.1016/j.pecs.2010.02.001
B. J. P. Buhre, L. K. Elliott, C. D. Sheng, R. P. Gupta and T. F. Wall, “Oxy-Fuel Combustion Technology for CoalFired Power Generation,” Progress in Energy and Combustion Science, Vol. 31, No. 4, 2005, pp. 283-307. doi:10.1016/j.pecs.2005.07.001
D. Singh, E. Croiset, P. L. Douglas and M. A. Douglas, “Techno-Economic Study of CO2 Capture from an Existing Coal-Fired Power Plant: MEA Scrubbing vs O2/CO2 Recycle Combustion,” Energy Conversion and Management, Vol. 44, No. 19, 2003, pp. 3073-3091. doi:10.1016/S0196-8904(03)00040-2
M. Alejandro and R. S. Christopher, “Ignition and Devolatilization of Pulverized Bituminous Coal Particles during Oxygen/Carbon Dioxide Coal Combustion,” Proceedings of the Combustion Institute, Vol. 31, No. 2, 2007, pp. 1905-1912. doi:10.1016/j.proci.2006.08.102
A. B. Paula and A. Yiannis, “Single-Coal-Particle Combustion in O2/N2 and O2/CO2 Environments,” Combustion and Flame, Vol. 153, 2008, pp. 270-287.
T. Zeng and W. Fu, “The Ratio CO/CO2 of Oxidation on a Burning Carbon Surface,” Combustion and Flame, Vol. 107, No. 3, 1996, pp. 197-210. doi:10.1016/S0010-2180(96)00071-5
M. Faraday and C. Lyell, “Explosions in Coal Mines,” Philosophical Magazine, Vol. 26, 1845, pp. 16-35.
K. Cen, Q. Yao and Z. Luo, “Advanced Combustion,” Zhejiang University Press, Hangzhou, 2002, pp. 277-284.
J. Arthur, “Reactions between Carbon and Oxygen,” Transactions of the Faraday Society, Vol. 47, 1951, pp. 164-178. doi:10.1039/tf9514700164
L. Tognotti, J. Longwell and A. Sarofim, “The Products of the High Temperature Oxidation of a Single Char Particle in an Electrodynamic Balance,” Proceedings of the Combustion Institute, Vol. 23, No. 1, 1991, pp. 1207- 1213.
N. Kimura, K. Omata, T. Kiga, S. Takano and S. Shikisima, “Characteristics of Pulverized Coal Combustion in O2/CO2 Mixtures for CO2 Recovery,” Energy Conversion and Management, Vol. 36, No. 6-9, 1995, pp. 805-808. doi:10.1016/0196-8904(95)00126-X
K. Renu, K. Liza and F.Terry, “Differences in Reactivity of Pulverised Coal in Air (O2/N2) and Oxy-Fuel (O2/CO2) Conditions,” Fuel Processing Technology, Vol. 90, No. 6, 2009, pp. 797-802. doi:10.1016/j.fuproc.2009.02.009
L. Zheng and E. Furimsky, “Assessment of Coal Combustion in O2/CO2 by Equilibrium Calculations,” Fuel Processing Technology, Vol. 81, No. 1, 2003, pp. 23-34. doi:10.1016/S0378-3820(02)00250-3
C. Wang, G. Berry and K. Chang, “Combustion of Pulverized Coal Using Waste Carbon Dioxide and Oxygen,” Combustion and Flame, Vol. 72, No. 3, 1988, pp. 301- 310. doi:10.1016/0010-2180(88)90129-0
D. Woycenko, K. Vande and P. Roberts, “Combustion of Pulverized Coal in a Mixture of Oxygen and Recycled Flue Gas,” European Commission Journal of Clean Coal Technology Program, Vol. 1, 1995, pp. 92-99.
P. Glarborg and L. Bentzen, “Chemical Effects of a High CO2 Concentration in Oxy-Fuel Combustion of Methane,” Energy & Fuels, Vol. 22, No. 1, 2008, pp. 291-296. doi:10.1021/ef7005854
Y. Qiao, L. Zhang and E. Binner, “An Investigation of the Causes of the Difference in Coal Particle Ignition Temperature between Combustion in Air and in O2/CO2,” Fuel, Vol. 89, No. 11, 2011, pp. 3381-3387. doi:10.1016/j.fuel.2010.05.037
L. Wu, Y. Qiao, B. Gui and M. Xu, “Effects of Chemical Forms of Alkali and Alkaline Earth Metallic Species on the Char Ignition Temperature of a Loy Yang Coal under O2/N2 Atmosphere,” Energy & Fuels, Vol. 26, No. 1, 2012, pp. 112-117. doi:10.1021/ef2011386
F. Liu, H. Guo and G. Smallwood, “The Chemical Effect of CO2 Replacement of N2 in Air on the Burning Velocity of CH4 and H2 Premixed Flames,” Combustion & Flame, Vol. 133, No. 4, 2003, pp. 495-497.
F. Liu, H. Guo, G. Smallwood and O. Gulder, “The Chemical Effects of Carbon Dioxide as an Additive in an Ethylene Diffusion Flame: Implications for Soot and NOx Formation,” Combustion & Flame, Vol. 125, No. 1-2, 2001, pp. 778-787. doi:10.1016/S0010-2180(00)00241-8
A. Masri, R. Dibble and R. Barlow, “Chemical Kinetic Effects in Nonpremixed Flames of H2/CO2 Fuel,” Combustion & Flame, Vol. 91, No. 3-4, 1992, pp. 285-309. doi:10.1016/0010-2180(92)90059-X