1 research outputs found
Long-Time-Period, Low-Temperature Reactions of Green River Oil Shale
Reactions
of water-washed chunks of a deeply buried Green River
oil shale (2880–2920 ft, well below the water table) have been
carried out in N<sub>2</sub>–H<sub>2</sub>O and CO–H<sub>2</sub>O for up to 28 days at temperatures in the range of 280–370
°C. Large variations in yields of liquid products were observed
for reactions below 330–340 °C. These were attributed
to varying mineralogy in the chunks because the variations disappeared
for reactions of ground samples or reactions above 330–340
°C, at which point the chunks disintegrated. Liquid-product yields
of up to 70 wt % dry mineral matter free could be obtained from the
chunks at temperatures as low as 320 °C, provided that long reaction
times of 14 or 28 days were used. In particular, at lower temperatures,
yields were higher under N<sub>2</sub> than under CO, but the quality
of the CO–H<sub>2</sub>O petroleum or oil/gas products tended
to be better than that of N<sub>2</sub>–H<sub>2</sub>O products.
The liquid products contained 1–2 wt % nitrogen, were high
in aliphatic material, and contained significant amounts of heavily
substituted aromatic rings