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- W148968946 abstract "Shale oil so far extracted has proved to be amenable to normal oil refining processing, apart from some difficulties due to high nitrogen and sulfur content. However, in oil shales, the organic material is chemically bound to clay-like minerals and therefore something beyond simple physical processing is required. There are 2 possible methods of attack - on the organic material, known as kerogen or on the mineral material. The first process is similar to thermal cracking, long used in the petroleum industry, since the shale oil contains a range of unsaturated, olefinic compounds. In common with the cracking process, oil shale retorting gives rise to copious production of gases - methane and saturated and unsaturated higher hydrocarbons. These gases are frequently used to fuel the retorting process to some extent as may be the residual carbon on the spent shale. Even though the original kerogen in the shale may be more or less paraffinic, it can be seen that the retorting process, by producing light gases, will rob the remainder of the oil of hydrogen and hence this oil will tend to be unsaturated and/or aromatic. A further result of this process is that olefins will tend to polymerize atmore » the later stages of retorting and hence eventually leave carbon on the mineral matter, which can be burned to provide further heat.« less" @default.
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- W148968946 date "1978-12-01" @default.
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- W148968946 title "Shale oil: an energy option" @default.
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