from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. Present participle of hydrotreat.
  • n. A chemical engineering process in which reaction with hydrogen is used to remove impurities, especially as part of oil refining


Sorry, no etymologies found.


  • "A lot of biomass processing technologies resemble a petroleum industry process called hydrotreating, which uses a lot of hydrogen," Bond said.

    Climate Progress

  • Next comes distillation, thermal conversion, catalytic conversion, and hydrotreating.

    The Media Consortium: Weekly Mulch: The Sticky Truth about Oil Spills and Tar Sands

  • Catalytic hydrotreating is a hydrogenation process used to remove about 90% of contaminants such as nitrogen, sulfur, oxygen, and metals from liquid petroleum fractions.


  • Severe lube hydrotreating, at temperatures in the 600°-750° F range and hydrogen pressures up to 3,000 psi, is capable of saturating aromatic rings, along with sulfur and nitrogen removal, to impart specific properties not achieved at mild conditions.


  • The quality of pygas, which is high in diolefin content, can be satisfactorily improved by hydrotreating, whereby conversion of diolefins into mono-olefins provides an acceptable product for motor gas blending.


  • Typically, hydrotreating is done prior to processes such as catalytic reforming so that the catalyst is not contaminated by untreated feedstock.


  • Naphtha produced from steam cracking contains benzene, which is extracted prior to hydrotreating.


  • In addition, hydrotreating converts olefins and aromatics to saturated compounds.


  • Lube-oil hydrotreating uses catalytic treatment of the oil with hydrogen to improve product quality.


  • The liquid stream is the product from hydrotreating and is normally sent to a stripping column for removal of H2S and other undesirable components.



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