hydroskimming refinery

industry

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June 29, 2026

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A hydroskimming refinery is a type of petroleum refinery that builds upon a basic topping refinery configuration. It includes hydrotreating and reforming units, which allow it to produce desulfurized distillate fuels and high-octane gasoline. However, these refineries still produce a significant amount of residual fuel oil, up to half of their output. As demand for high-sulfur fuel oils declines, hydroskimming refineries face increasing economic challenges. Hydrotreating, a key process, uses hydrogen and catalysts to remove sulfur and nitrogen impurities from oil, converting them into hydrogen sulfide and ammonia, respectively.12

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petroleum refining
Topping and hydroskimming refineries
…results in a more flexible hydroskimming refinery, which can also produce desulfurized distillate fuels and high-octane gasoline. Still, these refineries may produce up to half of their output as residual fuel oil, and they face increasing economic hardship as the demand for high-sulfur fuel oils declines.
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…results in a more flexible hydroskimming refinery, which can also produce desulfurized distillate fuels and high-octane gasoline. Still, these refineries may produce up to half of their output as residual fuel oil, and they face increasing economic hardship as the demand for high-sulfur fuel oils declines.
Read More