The effect of moisture on the liquefaction of some Turkish coals on tetralin with microwave energy
Energy Sources, vol.24, no.7, pp.675-684, 2002 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 24 Issue: 7
- Publication Date: 2002
- Doi Number: 10.1080/00908310290086608
- Journal Name: Energy Sources
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.675-684
- Keywords: coal, liquefaction, microwave, moisture, BROWN COAL, DISSOLUTION, REACTIVITY, LIGNITES, HYDROGEN, BEHAVIOR, TIME
- Ankara University Affiliated: Yes
Abstract
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.