Title:
【発明の名称】残留炭化水素油の品質を向上させる方法
Document Type and Number:
Japanese Patent JPH10505364
Kind Code:
A
Abstract:
A method is provided to remove metals from a residual oil containing an initial amount of a selected metal, the method comprising the steps of: providing a vessel for exposing the residual oil to a DC electric field having a strength of about one kV/inch or greater, passing the residual oils through the vessel whereby at least ten percent by weight of the initial amount of the selected metal is removed by attraction to an electrode; and passing the residual oil that has been passed through the vessel over a hydrodemetalization catalyst in the presence of hydrogen. Metal containing particles and other toluene insoluble organic and inorganic solids are effectively removed from residual oil streams by treatment with a DC electrical field prior to hydrodemetalization resulting in significant increases in useful lives for downstream hydrodemetalization catalyst. The vessel preferably provides a residence time of between about two minutes and about two hours and contains one or more electrodes, the electrodes having a total surface area of between about 0.01 and about one m2/(ton/day) based on the total residual oil. The electrodes are preferably coated with a polymeric coating to enhance cleaning of the electrodes
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Inventors:
Krka, Witold Raymond
Anthony Frangiskus Heinrich
Anthony Frangiskus Heinrich
Application Number:
JP52937595A
Publication Date:
May 26, 1998
Filing Date:
May 12, 1995
Export Citation:
Assignee:
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BESLOTEN VENNOOTSHAP
International Classes:
C10G32/02; C10G45/02; C10G67/02; (IPC1-7): C10G32/02; C10G67/02
Attorney, Agent or Firm:
Kawahara Kazuho