The effect of moisture on the liquefaction of some Turkish coals on tetralin with microwave energy

Simsek E. H., Karaduman A., Togrul T.

Energy Sources, cilt.24, sa.7, ss.675-684, 2002 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Sayı: 7
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1080/00908310290086608
  • Dergi Adı: Energy Sources
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.675-684
  • Anahtar Kelimeler: coal, liquefaction, microwave, moisture, BROWN COAL, DISSOLUTION, REACTIVITY, LIGNITES, HYDROGEN, BEHAVIOR, TIME
  • Ankara Üniversitesi Adresli: Evet

Özet

The effect of the moisture content of coals, solvent/coal ratio, and the heating period by microwave energy on solubilization of Turkish coals (Bolu-Göynük, Beypazari, Muǧla-Yataǧan, Tunçbilek, Aydin-Yeniçeltek lignites, and Zonguldak coal) in tetralin has been investigated. The yields of tetrahydrofuran (THF) solubles and oils were increased with increasing moisture content of coals. When solvent/coal ratio increased from 2/1 to 4/1, the yield of oils increased. However, the yields of asphaltenes and preasphaltenes decreased. The yields of THF solubles and oils did not change considerably with reaction time. While the yields of asphaltenes and preasphaltenes decreased with reaction time at the value of 2/1 of solvent/coal ratio and increased with reaction time at the value of 4/1 of solvent/coal ratio, the yields are lower than at the value of 2/1 of solvent/coal ratio.