Distills the incoming crude oil into various fractions for further processing in other units.
Further distills the residue oil from the bottom of the crude oil distillation unit. The vacuum distillation is performed at a pressure well below atmospheric pressure.
Uses hydrogen to desulfurize the naphtha fraction from the crude oil distillation or other units within the refinery.
Converts the desulfurized naphtha molecules into higher-octane molecules to produce reformate, which is a component of the end-product gasoline or petrol.