The Composition and Properties of Soluble Products from the Coal ThermoSolvolysis with Hydrocarbon Residues and Blends as Solvents

Authors

  • P.N. Kuznetsov Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SBRAS”, str. Akademgorodok 50/24, Krasnoyarsk, Russia
  • Z.R. Ismagilov Institute of Coal Chemistry and Material Science SB RAS FRC CCC, pr. Sovetskiy 18, Kemerovo,
  • L.I. Kuznetsova Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SBRAS”, str. Akademgorodok 50/24, Krasnoyarsk, Russia
  • B. Avid Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, ave. Enkhtaivan, 54b, Ulaanbaatar, Mongolia
  • X. Fan Shandong University of Science and Technology, Qianwangang road, 579, Qingdao, Shandong, China
  • Е.S. Mihkailova Institute of Coal Chemistry and Material Science SB RAS FRC CCC, pr. Sovetskiy 18, Kemerovo, Russia

DOI:

https://doi.org/10.18321/ectj1431

Keywords:

Bituminous coal, Commercial solvents, Dissolution, Aromatics, Benzo(a)pyrene

Abstract

The dissolution of bituminous coal at mild temperature was studied using a variety of commercially available coal- and petroleum-derived hydrocarbon fractions, hydrorefined derivatives and blends as solvents. The chemical and molecular composition of the coal, solvents and extracts were characterized by chemical and group analyses, and by IRFT, 1H NMR, GC-MS and liquid chromatography. Low volatile solvents like highly aromatic coal tar (CT), its anthracene fraction (AFCT), petroleum-derived solvent (HGOCC) and binary blends were found to exhibit high performance for coal dissolution into quinoline solubles (to 79‒82%), and the yields of gases being no more than 0.5%. The extracts obtained using CT and AFCT solvents represented pitch-like matter consisting of rarely substituted aromatic molecules with 4‒5 condensed rings. HGOCC extract was much less aromatic, the aromatic rings being highly substituted with fairly large alkyl substituents. The blended solvents yielded more extracts, and their molecular indexes were average between those obtained with each solvent separately. A remarkable finding was that the extracts obtained were characterized by significantly lower content of benzo(a) pyrene (BaP) compared to solvents used, its content further decreased as the time of coal dissolution increased.

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Published

2022-10-10

How to Cite

Kuznetsov, P., Ismagilov, Z., Kuznetsova, L., Avid, B., Fan, X., & Mihkailova Е. (2022). The Composition and Properties of Soluble Products from the Coal ThermoSolvolysis with Hydrocarbon Residues and Blends as Solvents. Eurasian Chemico-Technological Journal, 24(3), 183–190. https://doi.org/10.18321/ectj1431

Issue

Vol. 24 No. 3 (2022)

Section

Articles

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