Abstract


UPGRADING OF ESTONIAN SHALE OIL DiSTILLATION FRACTIONS.
6. THE EFFECT OF TIME AND TEMPERATURE ON THE YIELD AND COMPOSITION
OF HEAVY MAZUTE HYDROGENATION PRODUCTS

H. LUIK
N. VINK
L. MARIPUU
E. LINDARU
Tallinn Technical University,
Institute of Chemistry
15 Akadeemia St., Tallinn
12618 Estonia

Hydrogenation of Estonian shale oil heavy mazute fraction boiling over 360 C and characterized by high content of high-polar and heteroatomic compounds and by low content of aliphatic hydrocarbons was carried out in an autoclave at various conditions to investigate the effect of temperature and time on the yield and composition of products obtained. It was found that lengthening the hydrogenation time leads to higher yields of refined oil, which is characterized by a higher content of nonaromatic hydrocarbons and, as compared with oils obtained at elevated temperatures, by a higher content of undecomposed heteroatomic compounds.

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