Systems and processes for removing elemental sulfur compounds from desulfurized fuels

摘要

A system and process are disclosed for removing elemental sulfur compounds from hydro-desulfurization (HDS) treated hydrocarbon products including liquid hydrocarbon fuels. Low (sub-ppm) concentrations of sulfur remain in the hydrocarbons, providing, e.g., fuel products suitable for use in various modalities including, e.g., jet fuels and fuel cell Auxiliary Power Units (APUs).

主权项

1. A method for desulfurizing a hydrocarbon, the method comprising:
reacting organic sulfur compounds in the hydrocarbon with a first hydrogen-containing gas in the presence of a first catalyst to form H2S gas and to convert organic sulfur remaining in the hydrocarbon substantially into the form of elemental sulfur compounds; separating a first H2S-containing gas from the hydrocarbon containing the elemental sulfur compounds; reacting the elemental sulfur compounds in the hydrocarbon with a second hydrogen-containing gas in the presence of a second catalyst to convert the elemental sulfur compounds in the hydrocarbon to H2S gas; and separating a second H2S-containing gas formed from conversion of the elemental sulfur compounds from the hydrocarbon to obtain a desulfurized hydrocarbon.