Study of supercritical coal extraction in toluene containing fluids

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.3844/ajassp.2016.236.242

Ключевые слова: Co-solvent, Coals, Extract, Supercritical conditions, Toluene

Аннотация: The conversion of brown coals and sapropelic coal in toluene containing mixtures with co-solvents (water, ethanol and tetralin) was studied under sub-and supercritical conditions within the temperature range of 375-550°C and at pressures from 7 to 40 MPa. It was found that the extent of coal extraction in the toluene solvent medium, at 400°C, was significantly increased by the addition of small amounts of hydrogen-donor tetralin or ethanol co-solvents. The extract yield from sapropelic coal reached 79-83%, with the gas yield being small. The effect of process variables on extract yields under sub-and supercritical conditions was monitored. Coal extraction in the toluene-tetralin mixtures was found to depend mainly on the hydrogen donor ability of the tetralin co-solvent irrespective of sub-or supercritical toluene states. According to the composition, the bitumen extracted from coals can be used as a feedstock for pitch production. In the water containing mediums, aside from coal liquefaction, coal methanation, hydrolysis and oxidation reactions occurred resulting in the generation of large amounts of methane, hydrogen and carbon dioxide. © 2016 Peter Nikolayevich Kuznetsov, Svetlana Mikhaylovna Kolesnikova, Ludmila Ivanovna Kuznetsova and Anastasia Valerievna Kazbanova.

Ссылки на полный текст

Издание

Журнал: American Journal of Applied Sciences

Выпуск журнала: Vol. 13, Is. 3

Номера страниц: 236-242

ISSN журнала: 15469239

Авторы

  • Kuznetsov P.N. (Siberian Federal University)
  • Kolesnikova S.M. (Institute of Chemistry and Chemical Technology SB)
  • Kuznetsova L.I. (Institute of Chemistry and Chemical Technology SB)
  • Kazbanova A.V. (Siberian Federal University)

Вхождение в базы данных

Информация о публикациях загружается с сайта службы поддержки публикационной активности СФУ. Сообщите, если заметили неточности.

Вы можете отметить интересные фрагменты текста, которые будут доступны по уникальной ссылке в адресной строке браузера.