Investigation of Thermal Transformations of the Barzas Sapromixite under Autoclave Conditions

Тип публикации: статья из журнала

Год издания: 2004

Аннотация: Thermal transformations of sapromixite from the Barzas deposit are investigated under the conditions of pyrolysis processes in an inert atmosphere, hydropyrolysis in the atmosphere of hydrogen, thermal dissolution in the residue from oil refining and catalytic hydrogenation. It is shown that sapromixite can be transformed with a high yield into liquid hydrocarbon products. The main products of this transformation is the fraction of liquid hydrocarbons with boiling point above 180 oC; its yield from sapromixite is substantially (up to 7.7 times during pyrolysis) higher than the corresponding value for brown coal. The highest degree of sapromixite conversion into liquid and gaseous products was achieved for its pyrolysis in the atmosphere of hydrogen and for hydrogenation in the presence of mechanically activated iron-ore catalyst. For hydrogenation, maximal conversion of sapromixite reaches 94-97mass % at a temperature within 400-430oC. For hydropyrolysis of sapromixite, the degree of conversion increases with an increase in the process temperature and reaches 78-80mass % at 430-460oC. Further temperature rise causes a sharp increase in the amount of gas formed and a decrease in the yield of liquid products. The application of iron-ore catalyst during hydrogenation allows one to increase the sapromixite conversion degree by 21-23% and to achieve total yield of liquid products of hydropyrolysis up to 58 mass % with rather low gas formation.

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Издание

Журнал: Chemistry for Sustainable Development

Выпуск журнала: Т. 12, 6

Номера страниц: 719-725

ISSN журнала: 18171818

Место издания: Новосибирск

Издатель: Федеральное государственное унитарное предприятие Издательство Сибирского отделения Российской академии наук

Авторы

  • Sharypov V.I. (Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences)
  • Kuznetsov B.N. (Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences)
  • Beregovtsova N.G. (Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences)
  • Baryshnikov S.V. (Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences)
  • Vasilieva N.Yu. (Krasnoyarsk State University)

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