Biodesulfurization of hydrocarbons
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United States of America Patent
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Issued Date -
May 15, 2003
app pub date -
Nov 14, 2001
filing date -
Nov 14, 2001
priority date (Note) -
Abandoned
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Abstract
A process for converting organic sulfur compounds contained in liquid hydrocarbons to elemental sulfur. The liquid hydrocarbons are solubilized in an organic solvent and reacted in the presence of a biocatalyst and hydrogen. The organic solvent is a nucleophilic solvent having a pK.sub.a greater than about 2, an electrophilic solvent having a pK.sub.a more negative than about -2, or mixtures thereof. The biocatalyst may be supported on a Lewis acid. Elemental sulfur is removed from the liquid hydrocarbons. Liquid hydrocarbons treated in accordance with this process have significantly reduced concentrations of organic sulfur compounds and thus reduced viscosity.
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