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INTEGRATED DESULFURIZATION AND DENITRIFICATION PROCESS INCLUDING MILD HYDROTREATING OF AROMATIC-LEAN FRACTION AND OXIDATION OF AROMATIC-RICH FRACTION

  • US 20120152804A1
  • Filed: 12/15/2010
  • Published: 06/21/2012
  • Est. Priority Date: 12/15/2010
  • Status: Active Grant
First Claim
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1. A method of processing a hydrocarbon feed to remove undesired aromatic and non-aromatic organosulfur compounds comprising:

  • subjecting the hydrocarbon feed and an effective quantity of extraction solvent to an extraction zone to producean extract containing a major proportion of the aromatic content of the hydrocarbon feed and a portion of the extraction solvent anda raffinate containing a major proportion of the non-aromatic content of the hydrocarbon feed and a portion of the extraction solvent;

    separating at least substantial portion of the extraction solvent from the raffinate and retaining an aromatic-lean fraction;

    separating at least substantial portion of the extraction solvent from the extract and retaining an aromatic-rich fraction;

    subjecting the aromatic-lean fraction to a hydrotreating process to thereby reduce the sulfur content; and

    contacting the aromatic-rich fraction with an oxidizing agent and an oxidizing catalyst to convert aromatic organosulfur compounds to oxides.

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