Flash pyrolysis of Silopi asphaltite in a free-fall reactor under vacuum

Sezer M., Bilgesue A. Y., Karaduman A.

Journal of Analytical and Applied Pyrolysis, vol.82, no.1, pp.89-95, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 82 Issue: 1
  • Publication Date: 2008
  • Doi Number: 10.1016/j.jaap.2008.01.003
  • Journal Name: Journal of Analytical and Applied Pyrolysis
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.89-95
  • Keywords: asphaltite, Silopi asphaltite, pyrolysis, free-fall reactor, vacuum pyrolysis, GOYNUK-OIL-SHALE, SIRNAK-ASPHALTITE, PRODUCT YIELDS, AVGAMASYA ASPHALTITE, HIGH-TEMPERATURE, BIOMASS, DESULFURIZATION, RAPESEED, LINSEED, RESIDUE
  • Ankara University Affiliated: Yes

Abstract

Flash pyrolysis experiments on asphaltite samples were performed in a free-fall reactor under vacuum to determine the effects of pyrolysis temperature, feed rate and particle size. Maximum liquid yield of 13 wt.% was obtained in free-fall reactor under vacuum when the pyrolysis temperature was 700 °C, feed rate was 0.4 g min-1 and particle sizes were between 0.075 and 0.250 mm. The liquid products obtained at various pyrolysis conditions were analyzed by gas chromatography/mass spectrometer (GC/MS) and liquid products were classified as following: C5-C10, C11-C15, C16-C20 and C20+. The amount of saturated hydrocarbons decreased while the amount of unsaturated hydrocarbons increased with increase of temperature. While percent of C5-C10 unsaturated hydrocarbons continuously increased with increase of temperature, the percent of C11-C15 unsaturated hydrocarbons increased up to 750 °C and then started to diminish. Functional group analysis of solid residue was carried out using Fourier transform infrared spectrometry (FT-IR). The proximate analysis of solid residue indicated that percent of fixed carbon and ash increased with temperature. © 2008 Elsevier B.V. All rights reserved.