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US 6,210,564 B1Granted
Process for desulfurization of petroleum feeds utilizing sodium metal
AssigneeExxon Research & Engineering Co.
InventorsGlen Brons, Ronald Damian Myers, Roby Bearden, Jr., John Brenton MacLeod
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Abstract
Sulfur-containing petroleum feeds are desulfurized by contacting the feeds with staged addition of sodium metal at temperatures of at least about 250° C. in the presence of excess hydrogen to sodium metal. The formation of Na2S is substantially suppressed and the formation of NaSH is promoted in the desulfurization process.
Claims9
A process for the desulfurization of a sulfur-containing petroleum feed, comprising:
- contacting said petroleum feed with sodium metal using staged addition at a temperature of from 325° to 400° C. in the presence of an effective molar excess of hydrogen to sodium metal of at least 1.5:1 and at a molar ratio of sodium metal to unreacted sulfur of up to 1:1 to substantially suppress the formation of Na2S and to promote the formation of NaSH during said desulfurization.
Dependencies are inferred from the claim text.