Petroleum refining processes: Difference between revisions - Wikipedia
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Line 19: ==Main Processing Units of Refineries - Treatment== * [[Petroleum refining processes# * [[Vacuum distillation]] unit: 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. * [[Hydrodesulfurization|Naphtha hydrotreater]] unit: Uses [[hydrogen]] to desulfurize the [[petroleum naphtha|naphtha]] fraction from the crude oil distillation or other units within the refinery. |