Investigation of the Stability of Oil Pyrobitumen
by Means of Thermal Destruction
A. A. GRINKO and A. K. GOLOVKO
Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences
grinco@ipc.tsc.ru
Keywords: oil pyrobitumen, thermolysis, composition of products, structure of pyrobitumen
Pages: 303–310
Abstract
Thermolysis of the samples of pyrobitumen of petroleum from the Usinsk deposit was carried out at a temperature of 160, 200, 250, 300, 450 and 650 °С. Pyrobitumen samples after thermolysis were analyzed by means of IR spectrometry, the elemental composition of the samples was determined, as well as the molecular masses and the structural group characteristics, and the hypothetic structures of average molecules were constructed. Liquid and gaseous products formed as a result of pyrobitumen thermolysis were analyzed by means of GLC and GLC/GAC. On the basis of the data on the thermal stability of saturated aliphatic and cyclic sulphureous fragments and change in the total sulphur content in thermolyzed pyrobitumen, we calculated the amounts of alkyl and thiacyclane sulphur incorporated into the molecules of pyrobitumen.
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