Process for removing sulfur compounds from gas and liquid...

C - Chemistry – Metallurgy – 10 – G

Patent

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C10G 21/27 (2006.01) C10G 21/28 (2006.01) C10L 3/10 (2006.01)

Patent

CA 2402167

The present invention provides a process for removing sulfur compounds including sulfur in the (-2) oxidation state from liquid or gas feed streams, particularly hydrocarbon feed streams. According to the process, such a feed stream including these sulfur impurities is contacted with an absorbent which includes a metal ion- containing organic composition to thereby form sulfurmetal cation coordination complexes in which the oxidation state of the sulfur and the metal cation remains essentially unchanged. The complexes are separated from the feed stream, and the absorbent is regenerated by disassociating the sulfur compound from the complexes.

L'invention concerne un procédé permettant d'extraire des composés de soufre, y compris du soufre à l'état d'oxydation (-2), contenus dans des flux d'alimentation liquides ou gazeux, notamment des flux d'alimentation d'hydrocarbures. Un tel flux d'alimentation contenant ces impuretés de soufre est mis en contact avec un absorbant comportant une composition organique contenant un ion métallique afin de former des complexes de coordination cation métallique-soufre dans lesquels l'état d'oxydation du soufre et du cation métallique demeure sensiblement inchangé. les complexes sont séparés du flux d'alimentation, l'absorbant étant alors régénéré par dissociation du composé de soufre des complexes.

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