| 초록 |
Recent increase of demand in light oil has spurred research in heavy-oil upgrading technologies. Among the heavy oils like petroleum residue and bitumen, vacuum residue (VR) occupying a half of heavier crude oil, has been a target to be upgraded into middle distillates. Slurry phase hydrocracking in the presence of unsupported MoS2 catalysts is one of the most promising processes with high conversion rate of heavy oil to distillates. In particular, the unsupported MoS2 catalysts shows superior activity and stability over the supported catalyst system for VR HCK. This study presents the hydrocracking and hydrogenation activity of unsupported MoS2 catalysts on the slurry phase hydrocracking of VR with varying the size ranges of the catalyst. The formation of different size ranges of the unsupported MoS2 catalyst was achieved at 10 MPa H2 and at different temperatures 623~683K for 0.5~2hr after the introduction of Mo precursor in an autoclave reactor. |
