UPGRADING OF ESTONIAN SHALE OIL DISTILLATION FRACTIONS
2. THE EFFECT OF TIME AND HYDROGEN PRESSURE ON THE YIELD AND COMPOSITION
OF "DIESEL FRACTION" HYDROGENATION PRODUCTS
H. LUIK
N. VINK
E. LINDARU
L. MARIPUU
Institute of Chemistry
Tallinn Technical University
15 Akadeemia Rd., Tallinn
12618 Estonia
| Upgrading of Estonian shale oil fraction boiling at 180-240 oC, the so-called "diesel fraction", characterized by sulfur content 0.85 % and polar hetero-atomic compound content 20 % after dephenolation, was effected by hydrogenation in an autoclave at 370 oC using a Co-Mo catalyst. Chemical group composition and changes in the composition of functional groups occurring at hydrogenation of the "diesel fraction" were determined. Hydrogen consumption potential of the "diesel fraction" was estimated in multistep hydrogenation experiments. It was concluded that hydrogenation proceeds rapidly, non-aromatic hydrocarbons being formed dominantly. |