Abstract


UPGRADING OF ESTONIAN SHALE OIL DiSTILLATION FRACTIONS.
5. HYDROGENATION OF HEAVY MAZUTE

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

Upgrading of Estonian shale oil heavy mazute fraction boiling over 320 C and characterized by high content of high-polar and heteroatomic compounds (46.6%) and by low content of aliphatic hydrocarbons (6.6%) was carried out in an autoclave at 370 C using Co-Mo and Ni catalysts. Both catalysts gave high recovery (over 90%), but when Co-Mo catalyst was used more volatiles with higher conversion level and less coke were obtained. The content of high-polar and heteroatomic compounds in hydrogenisate was decreased twice and that of aliphatic hydrocarbons was increased just as much, and as a result also other properties of heavy mazute were significantly altered.

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