Mercaptan extraction process
AssigneePhillips Petroleum Company
InventorCarl J. LaFoy
Life of this patent
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Abstract
A caustic wash process to remove mercaptans from a mixture of hydrocarbons, an improvement comprising washing the regenerated caustic with a fraction of said hydrocarbon to remove residual disulfides to improve the overall removal of sulfur from the hydrocarbon feed stream.
Claims8
A process for removing mercaptans from a hydrocarbon feed stream using a caustic solution comprising contacting said hydrocarbon feedstream with said caustic, separating said hydrocarbon feedstream from said caustic, oxidizing said caustic stream to convert removed mercaptans to disulfides, settling the thus treated caustic to separate the majority of said disulfides and contacting the remaining caustic solution containing sulfides and disulfides with a portion of said separated hydrocarbon feedstream to remove the remaining disulfides.
Dependencies are inferred from the claim text.