Pyrolysis of Seyitömer oil shale and lignite under different processing conditions

H. Okutan*, B. Uzluk, D. Erçikan, E. Ekinci

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Static, nitrogen, and steam sweep pyrolysis, and co-pyrolysis of oil shale and Seyitömer lignite were studied. A modified Heinze type retort with a 40 g sample capacity was used. Pyrolysis runs were started at room temperature; samples were heated at a rate of 4°C/min up to 550°C, and held for 30 min at this temperature. Both nitrogen and water sweep improved the oil yield considerably compared to static pyrolysis. Steam had a greater effect on oil yield. The changes in oil structure were similar for nitrogen and steam: increases in sweep velocity caused increases in aliphatics and aromatics at the expense of polar compounds. Co-pyrolysis of lignite and oil shale had a synergistic effect on yield which was small compared to the sweep effect. This oil shale-lignite synergism disappeared at high sweep velocities.

Original languageEnglish
Pages (from-to)25-31
Number of pages7
JournalJournal of Analytical and Applied Pyrolysis
Volume29
Issue number1
DOIs
Publication statusPublished - Jun 1994

Keywords

  • Co-pyrolysis
  • lignite
  • pyrolysis
  • Seyitömer oil shale
  • sweep pyrolysis.

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