Comparative pyrolysis characteristics of Alpha torbanites and tertiary oil shales

✍ Scribed by Gregory J. Duffy; Pinky Udaja; Shao-Xin Lu

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 628 KB
• Volume: 69
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(90)90069-3

✦ Synopsis

Comparative pyrolysis data have been determined for samples of Alpha torbanite and its associated cannel coal using the apparatus and techniques previously applied to Tertiary oil shales. Modified Fischer assays gave C5 + oil yields of 61.5 f0.2% for the torbanite, almost four times the maximum yield measured with Tertiary oil shales. Oil yields of 13.4f0.2% for the cannel coal were comparable with the higher grade Tertiary deposits. In terms of elemental analysis, the most significant difference in composition of the oils was the high sulphur content of the cannel coal oil, which reflected the high sulphur content of this shale. Isothermal pyrolysis kinetic studies indicated that the torbanite was less reactive than Tertiary oil shales, while the cannel coal was comparable in reactivity with Stuart oil shales. However the differences in reactivity became significantly less as pyrolysis temperature approached 500°C.