Effect of Different Temperature-Time Combinations in Kerogen Pyrolysis to Thermobitumen and Oil

GALINA, SHARAYEVA and HANS LUIK,, LEA LUIK (2014) Effect of Different Temperature-Time Combinations in Kerogen Pyrolysis to Thermobitumen and Oil. In: Second International Conference on Advances in Applied Science and Environmental Engineering - ASEE 2014, 20 - 21 December, 2014, Kuala Lumpur, Malaysia.

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Abstract

Liquefaction of Kukersite and Dictyonema oil shales originating from Baltic deposits and varying by kerogen content and chemical composition were pyrolysed in a Fischer assay with the aim to maximize liquid product yield being determined as a sum of volatiles (oil) and solubles (thermobitumen). The effect of temperature in the range of 320–490 °C during 20 and 60 min residence time on the yield of thermobitumen, oil, gas, solid residue and water was studied. The chemical group and individual composition of the compounds in the liquid product such as aliphatic hydrocarbons, monoaromatic hydrocarbons, polyaromatic hydrocarbons, low-polar heteroatomic compounds and high-polar heteroatomic compounds were estimated by using TLC and GC/MS-methods. Varied temperature-time regimes used in modified Fischer assay analysis yield thermobitumen and oil in different proportions the sum of those being considerably higher compared with standard Fischer assay pyrolysis. Up to 90% of Kukersite kerogen was decomposed to the summary liquid product of thermobitumen and oil at 400 °C, 20 min or 390 °C, 60 min in a Fischer assay.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: modified Fischer assay pyrolysis, kerogen, thermobitumen, shale oil, yield
Depositing User: Mr. John Steve
Date Deposited: 26 Apr 2019 12:12
Last Modified: 26 Apr 2019 12:12
URI: http://publications.theired.org/id/eprint/1581

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