Method of converting saturated sulfur compounds of a hydrocarbon cut containing few or no olefins
OwnerSebastien LePlat, Florent Picard +1inventors
InventorsSebastien LePlat, Florent Picard, Nathalie Marchal
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Abstract
The invention relates to a method of converting the mercaptans contained in a hydrocarbon cut containing few or no olefins to heavier sulfur compounds. The method comprises a first stage of mixing the cut to be treated with hydrogen and possibly an olefin cut, then a second stage of reaction of the mixture from the first stage on a catalyst containing at least one group VIII metal. The invention also relates to the application of the method to treatment of a straight-run gasoline.
Claims20
1) A method of converting mercaptans contained in a hydrocarbon feed containing less than 5% by weight of olefins, comprising at least two stages:
- a first stage of mixing the feed to be treated with an amount of hydrogen, and optionally a stream containing the resulting mixture having a H2/olefin molar ratio ranging between 0.03 and 2, and an olefin/mercaptan molar ratio ranging between 5 and 5000, and
- a reaction stage comprising reacting of the mixture formed at the end of the first stage on a supported catalyst containing at least one group VIII metal, so as to convert mercaptans to heavier sulfur compounds with a conversion rate of at least 50%.
8) A mercaptan conversion method as claimed in further comprising withdrawing mercaptan-depleted effluent from the reaction stage and separating said effluent from the sulfur compounds formed during said reaction stage so as to produce an effluent containing less than 50% sulfur compounds present in the feed, and a cut containing the major part of the sulfur compounds.
Dependencies are inferred from the claim text.