Studying the Composition and Structure of a High-Boiling Part of Heavy Pyrolysis Resin Resulting from Processing a Broad Fraction of Light Hydrocarbons
M. A. TSEUNOVA1,2, V. I. MASHUKOV2 and A. K. GOLOVKO1
1Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Akademicheskiy 4, Tomsk 634021 (Russia)
2NIOST LLC, SIBUR’s Scientific Centre for Chemical Technologies, Kuzovlevskiy Trakt 2, build. 270, Tomsk 634067 (Russia)
Keywords: heavy pyrolysis resins, asphaltenes, resins, oils, pyrolysis, composition of volatile components
Pages: 415–422
Abstract
Analysis was performed concerning heavy pyrolysis resin produced at the Tomskneftekhim Ltd and the products of extraction and chromatographic separation thereof (oil species, resins and asphaltenes) with the use of a pyrolysis gas chromatography-mass spectrometry technique (PGCMS). Main structural fragments were determined for the resins and asphaltenes, as well as an individual composition was obtained for oils in the course of the decomposition thereof within a pyrolytic chamber at 800 °С in an inert atmosphere. It has been found that the oils represent a mixture of low molecular aromatic compounds such as condensed 3–6 ringed aromatic hydrocarbons the molecular mass up to 300 amu, whereas the resins and asphaltenes represent high molecular mass aromatic compounds, whose molecules are consist of 1–2-, 4–5- and 1–2-, 3–4-ringed aromatic fragments, respectively. Using the methods of PGHMS and IR spectroscopy, the composition of the high-boiling part of heavy pyrolysis resin has been identified.
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