The Combustion Analysis of Coal under Deflagration

Article Preview

Abstract:

The products of coal under fast pyrolysis experiments were carried to study the mechanism of coal products under the fast heat effects of deflagration. Several coal were studied here, such as young lignite, old lignite, long flame coal, coke and young anthracite. The experiments temperature is between 588~1313K, experiments heating velocity is 5000K/s, and with normal pressure, experiments time are 1s, 2s, 5s, 10s. Through fast pyrolysis experiments, products separated out from coal was got. There are CH4, CO, CO2, C2H4, C2H6, C4, C5, C3H6, C3H8. This mixed gas is flammable. The results could be used to study the combustion efficiency and mechanism of this special combustion course of different rank coal. This work is useful for study the coal using in the field of energy using and combustion. It may provide one new method to protect our environment tomorrow.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 614-615)

Pages:

126-131

Citation:

Online since:

December 2012

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] W. Rehm, M. Gerndt ,W.Jahn. etc. CFD simulation of deflagration detonation process using vector and parallel computing systems. Applied Mathematical Modelling. Vol. 22(1998), pp.811-822.

DOI: 10.1016/s0307-904x(98)10021-5

Google Scholar

[2] N. Davison, M.R. Edwards. Effects of fire on small commercial gas cylinders. Engineering Failure Analysis. Vol. 15(2008), pp.1000-1008.

DOI: 10.1016/j.engfailanal.2007.12.003

Google Scholar

[3] A. Arenillas, F. Rubiera, J.J. Pis. etc. Thermalbeha v iour during the pyrolysis of low rank perhydrous coals. J. Anal. Appl.Pyrolysis. Vol.69(2003), pp.371-385.

DOI: 10.1016/s0165-2370(03)00031-7

Google Scholar

[4] J.A. Caballero, R. Font, A. Marcilla. Pyrolysis of &-aft lignin: yields and correlations. Journal of Analytical and Annlied Pyrolysis. Vol. 39 (1997), pp.161-183.

DOI: 10.1016/s0165-2370(96)00965-5

Google Scholar

[5] Parisa Monsef-Mirzai, Mythili Ravindran, William R. McWhinnie. etc. Rapid microwave pyrolysis of coal Methodology and examination of the residual and volatile phases. Fuel. Vol.74(1995). P.20-27.

DOI: 10.1016/0016-2361(94)p4325-v

Google Scholar

[6] Colomba Di Blasi. Modeling chemical and physical processes of wood and biomass pyrolysis[J]. Progress in Energy and Combustion Science. Vol. 34(2008), pp.47-90.

DOI: 10.1016/j.pecs.2006.12.001

Google Scholar

[7] U.Sand, J.Sandberg, J.Larfeldt.Numerical prediction of the transport and pyrolysis in the interior and surrounding of dry and wet wood log[J]. Applied Energy. Vol. 85(2008), pp.1208-1224 .

DOI: 10.1016/j.apenergy.2008.03.001

Google Scholar

[8] Kenneth M.Bryden, Kenneth W.Ragland. Christopher J.Rutland. Modeling thermally thick pyrolysis of wood[J]. Biomass and Bioenergy. Vol. 22(2002), pp.41-53.

DOI: 10.1016/s0961-9534(01)00060-5

Google Scholar

[9] Shen Jun, Wang Xiao-Shan, Manuel Garcia-Perez. Effects of particle size on the fast pyrolysis of oil mallee woody biomass[J]. Fuel. Vol. 88(2009), pp.1810-1817.

DOI: 10.1016/j.fuel.2009.05.001

Google Scholar

[10] Luo Zhongyang, Wang Shurong, Kefa Cen. A model of wood flash pyrolysis in fluidized bed reactor[J]. Renewable Energy. Vol. 30(2005), pp.377-392.

DOI: 10.1016/j.renene.2004.03.019

Google Scholar

[11] Niels Bech, Morten Boberg Larsen, Peter Arendt Jensen. Modelling solid-convective flash pyrolysis of straw and wood in the Pyrolysis Centrifuge Reactor[J]. biomass and bioenergy. Vol. 33(2009), pp.999-1011.

DOI: 10.1016/j.biombioe.2009.03.009

Google Scholar

[12] L-P. Wiktorsson, W.Wanzl. Kinetic parameters for coal pyrolysis at low and high heating rates-a comparison of data from different laboratory equipment[J]. Fuel. Vol. 79(2000), pp.701-716.

DOI: 10.1016/s0016-2361(99)00138-6

Google Scholar

[13] Chan WR, Kelbon M, Krieger BB. Modeling and experimental verification of physical and chemical processes during pyrolysis of large biomass particle[J]. Fuel. Vol. 64(1985), pp.5-13.

DOI: 10.1016/0016-2361(85)90364-3

Google Scholar