THE EFFECT OF ASH AND ASH CONSTITUENTS ON THE LIQUEFACTION YIELD OF TURKISH LIGNITES AND ASPHALTITES


ONER M. , ONER G., BOLAT E., YALIN G., KAVLAK C., DINCER S.

FUEL, cilt.73, ss.1658-1666, 1994 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 73 Konu: 10
  • Basım Tarihi: 1994
  • Doi Numarası: 10.1016/0016-2361(94)90147-3
  • Dergi Adı: FUEL
  • Sayfa Sayıları: ss.1658-1666

Özet

The objective of this work was to study mineral matter effects in coal liquefaction. A suite of 16 lignites and two asphaltites have been liquefied in a batch autoclave under a standard set of reaction conditions. Experiments were performed at 440-degrees-C, 60 min residence time and 8 MPa hydrogen pressure (cold charge). All experiments were carried out in solvents, like anthracene oil, creosote oil, tetralin and TUPRAS vaccum residual oil, at a solvent:lignite ratio of two. The ash content of lignites and asphaltites ranged from 7.73 (dry) to 59.99% (dry). It was found that, generally, as the ash content increased, the total conversion of lignite and conversion to tetrahydrofuran (THF), toluene or hexane solubles increased; total conversion, THF and toluene solubles yields appear to remain constant at high ash contents. Multiple regression analysis was employed to relate yield and conversion data with specific ash minerals.