The effect of carbonization pressure for coal tar pitch of different composition on pyrolysis product properties is studied. The aim of the work is evaluation of dynamics and routes of forming the main coal tar pitch pyrolysis products under pressure and determination of pyrolysis product properties. It is established that with an increase in initial carbonizing pressure there is an increase in coke residue yield by 88.5 and 7.7% for low-temperature and high-temperature pitches respectively. The effect of α-fraction on final product microstructure is demonstrated. With an increase in α-fraction content by a factor of 3.7 the coke residue yield increases by 88.5, 60, and 55% for an initial pressure of 21, 11, and 1 bar respectively. It is revealed that with an increase in initial pressure there is an increase in primary product content and formation of new compounds within pyrolysis products is facilitated.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
V. E. Privalov and M. A. Stepanenko, Coal Tar Pitch [in Russian], Metallurgiya, Moscow (1981).
M. Zander, H. Marsh, E. A. Heintz, et al., “Pitch characterization for industrial applications,” in: Introduction to Carbon Technologies, University of Alicante, Alicante 1997.
V. Krebs, M. Ellilaoui, J. Mareche, et al. “Carbonization of coal-tar pitch under controlled atmosphere. Part I. Effect of temperature and pressure on the structural evolution of the formed green coke,” Carbon, 33, No. 5, 645 – 651 (1995).
K. J. Hoitinger and U. Rosenblatt, “Pressure effects on the yield and on the microstructure formation in the pyrolysis of coal tar and petroleum pitches,” Carbon, 15(2), 69 – 74 (1977).
M. Inagaki, K. Park, and M. Endo, “Carbonization under pressure,” New Carbon Materials, 25(6), 409 – 420 (2010).
G. Jonson, P. Murdoch, and A. Williams, “A study of the mechanism of the rapid pyrolysis of single particles of coal,” Fuel, 67(6), 834 – 842 (1988).
R. Conte, V. Herault, S. Castillo, and J. Traverge, “High-temperature gasification of carbonaceous materials by flash pyrolysis: thermal aspects,” Fuel, 66(8), 1107 – 1114 (1987).
A. Marcilla, M. Asensio, and I. Martin-Gullo, “Influence of the carbonization heating rate on the physical properties of activated carbons from a sub-bituminous coal,” Carbon, 34(4), 449 – 456 (1996).
H. Marsh, F. Dachille, J. Melvin, et al., “The carbonisation of anthracene and biphenyl under pressures of 300 MNm (3 kbar),” Carbon, 9(2), 159 – 164 (1971).
C. Yue and A. Watkinson, “Pyrolysis of pitch,” Fuel, 77, No. 7, 695 – 711 (1998).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Novye Ogneupory, No. 6, pp. 37, 42, June 2015
Rights and permissions
About this article
Cite this article
Trofimovich, M.A., Galiguzov, A.A., Malakho, A.P. et al. Effect of Pressure on Carbonization of Coal Tar Pitch of Different Composition. Refract Ind Ceram 56, 286–291 (2015). https://doi.org/10.1007/s11148-015-9832-2
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11148-015-9832-2