Removal of elemental sulfur in pipelines using static mixers

Details Removal of elemental sulfur in pipelines using static mixers Removal of elemental sulfur in pipelines using static mixers

C - Chemistry, Metallurgy

10

G

C10G 29/10 (2006.01) C10G 19/02 (2006.01)

Patent

CA 2674954

A process for removing elemental sulfur from liquid hydrocarbon steams such as transportation fuel streams, e.g. gasoline, diesel, kerosene, and jet, by contacting such streams with an immiscible aqueous solution under static mixing conditions. The aqueous solution contains a caustic and an effective amount of a Group I or Group II metal sulfide or polysulfide. The elemental sulfur in the stream is converted to a polysulfide that is not soluble in the hydrocarbon stream but is soluble in the aqueous solution, thus resulting in a hydrocarbon product stream having a substantially lower level of elemental sulfur.

L'invention concerne un procédé pour éliminer le soufre élémentaire de flux d'hydrocarbures liquides tel que des flux de carburant de transport, par exemple de l'essence, du Diesel, du kérosène et du carburant pour moteur à réaction, en mettant en contact de tels flux avec une solution aqueuse non miscible dans des conditions de mélange statique. La solution aqueuse contient un agent corrosif et une quantité efficace de sulfure ou de polysulfure de métal du groupe I ou du groupe II. Le soufre élémentaire du flux est converti en polysulfure qui n'est pas soluble dans le flux d'hydrocarbures mais est soluble dans la solution aqueuse, le résultat étant ainsi un flux de produit d'hydrocarbures ayant un niveau de soufre élémentaire nettement plus faible.

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