Abstract
Analytical methods are used to derive data regarding the yield and composition of liquid semicoking products from coal of limited metamorphic development (D, DG, and G coal). With greater metamorphic development of the coal, the yield of liquid semicoking tar increases, and the content of tar–asphaltene components in the tar rises. Chromatography combined with mass spectrometry shows that, in low-temperature pyrolysis, the liquid product formed consist of a complex mixture of saturated and aromatic hydrocarbons and heteroorganic compounds. In all the tars, normal and branched n-alkanes and n-alkenes are identified. The aromatic hydrocarbons include mono-, di-, and trisubstituted n-alkylbenzenes and alkylated naphthalenes. The heteroorganic compounds consist predominantly of oxygen-bearing compounds in the form of phenols with alkyl substituents. The different quantities of these components in the liquid products may be attributed to differences in the chemical structure of the coal’s organic mass.
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REFERENCES
Gryaznov, N.S., Osnovy teorii koksovaniya (Fundamental Theory of Coking), Moscow: Metallurgiya, 1976.
Gyul’maliev, A.M., Golovin, G.S., and Gladun, T.G., Teoreticheskie osnovy khimii uglya (Theory of Coal Chemistry), Moscow: Mosk. Gos. Gorn. Univ., 2003.
Gagarin, S.G., Evaluation of chemical potential of coal, Koks Khim., 2000, no. 1, pp. 30–34.
Gyul’maliev, A.M., Golovin, G.S., and Gagarin, S.G., Klassifikatsiya goryushikh iskopaemykh po strukturno-khimicheskim pokazatelyam i osnovnye puti ispol’zovaniya iskopaemykh uglei (Classification of Combustible Minerals by Structural-Chemical Parameters and Use of Fossil Coal), Moscow: Trek, 2007.
Platonov, V.V., Kudrya, A.N., and Proskuryakov, S.V., Chemical structure of asphaltene compounds from G17 coal semicoking tar, Russ. J. Appl. Chem., 2004, vol. 77, no. 1, pp. 159–161.
Gluzman, L.D. and Edel’man, I.I., Laboratornyi kontrol’ koksokhimicheskogo proizvodstva (Laboratory Control in Coke Chemical Industry), Kharkov: Gos. Nauchno-Tekh. Izd. Lit. Chern. Tsvetn. Metal., 1957, pp. 416–462.
Praktikum po tekhnologii pererabotki nefti (Practical Manual of Oil Processing Technologies), Smidovich, E.I. and Lukashevich, I.P., Eds., Moscow: Khimiya, 1978.
Kovalenko, E.Yu., Mel’nikov, Yu.Yu., Sagachenko, T.A., and Patrakov, Yu.F., Composition of the liquid products of the supercritical fluid extraction of oil shale from the Chim-Loptyugskoe deposit, Solid Fuel Chem., 2016, vol. 50, no. 2, pp. 102–106.
Pevneva, G.S., Voronetskaya, N.G., Korneev, D.S., and Golovko, A.K., Mutual influence of resins and oils in crude oil from the Usinskoe oilfield on the direction of their thermal transformations, Petrol. Chem., 2017, vol. 57, no. 8, pp. 739–745.
Strel’nikova, E.B., Serebrenikova, O.V., and Ryabova, N.V., Classification of Jurassic oils from southeastern West Siberia by IR data, Petrol. Chem., 2008, vol. 48, no. 6, pp. 420–427.
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Translated by Bernard Gilbert
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Fedorova, N.I., Gavrilyuk, O.M., Zaostrovsky, A.N. et al. Yield and Composition of Semicoking Tars from Low-Quality Coal. Coke Chem. 61, 338–343 (2018). https://doi.org/10.3103/S1068364X1809003X
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DOI: https://doi.org/10.3103/S1068364X1809003X