HETEROCYCLIC SULFUR JOINTS IN LOWBOILING FRACTIONS OF RESIN OF VOLGA-BASIN SHALE SEMICOKE
V. KASHIRSKII
G. VARNAKOVA
Saratov State Technical University
17 Politekhnichesjaya, Saratov
410016 Russia
| The Volga-basin oil shales are characterized by high sulfar content, the main part
of which corresponds to organic matter. As a result of thermal processing of oil shales under conditions of semicoke
regime the resin, containing 6-8 % of sulfur, is extracted. High-sulfuroil shales from Kotzebinski deposit were semicoked at the temperature 470 oC in the stand plant reactor with solid heat carrier. Semicoked resin was separated into fractions, then sulfur content was defined and the forms of sulfurous joints were identified. It is found out that the fractions boiling below 175 oC are characterized by the highest sulphur content. Study of the mentioned fractions by methods of chromatography analysis has shown, that sulphurous joints are presented by heterocycles - thiophene and metilthiophene, summary content of which in several fractions exceeds 20 %. |