| 摘要 |
FIELD: petroleum processing. ^ SUBSTANCE: method comprises fractional distillation of oil feedstock into distillate and residue; hydrofining, wherein at least part of distillate is refined via hydrogenation and subjected to desulfurization to produce hydrofined petroleum; solvent-mediated dewaxing, wherein residue is dewaxed to produce dewaxed petroleum as extract and asphaltene (pitch) as residue; hydrodemetallization/desulfurization, wherein part of dewaxed petroleum is demetallized and desulfurized to produce hydrodemetallized/desulfurized refined petroleum; and mixing stage, in which part of hydrodemetallized/desulfurized petroleum and at least part of hydrofined petroleum are combined to produce desired petroleum products. ^ EFFECT: improved quality of desired products. ^ 18 cl, 12 dwg, 6 ex |
