Process for the removal of oxygen from olefin-containing...

C - Chemistry – Metallurgy – 10 – G

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C10G 70/02 (2006.01) C07C 7/148 (2006.01)

Patent

CA 2498941

There is a requirement to remove oxygen from olefin-containing process streams which comprise relatively low levels of oxygen, carbon monoxide, a relatively large amount of hydrogen and optionally at least one alkyne, especially from the product streams from auto-thermal cracking of hydrocarbons. A process for removal of oxygen from such streams, without significant hydrogenation of the olefi, comprises, contacting the gas mixture in a reaction zone with a catalyst comprising at least one metal or oxide of a metal selected from the group consisting of the 10th group and the 11th group of the Periodic Table of Elements, the metal or oxide of the metal being supported on an oxide support, provided that where the catalyst comprises at least one metal or oxide of a metal from the 10th group of the Periodic Table of Elements, the catalyst also comprises tin and provided that where the catalyst comprises at least one metal or oxide of a metal of the 11th group of the Periodic Table of Elements the oxide support is a zeolite.

Il est nécessaire d'éliminer l'oxygène de liquides à traiter contenant des oléfines et présentant un niveau relativement bas d'oxygène, du monoxyde de carbone, une quantité relativement importante d'hydrogène et éventuellement au moins un alcyne, en particulier de liquides à traiter issus du craquage autothermique d'hydrocarbures. L'invention concerne un procédé d'élimination de l'oxygène de tels liquides, sans hydrogénation importante des oléfines. Ledit procédé consiste à mettre en contact, dans une zone de réaction, le mélange de gaz avec un catalyseur contenant au moins un métal ou un oxyde d'un métal sélectionné parmi les 10?e¿ ou 11?e¿ groupes du tableau périodique des éléments, le métal ou l'oxyde de métal étant supporté sur un support d'oxyde, pour autant que, lorsque le catalyseur contient au moins un métal ou un oxyde d'un métal du 10?e¿ groupe du tableau périodique des éléments, le catalyseur renferme également de l'étain, et que, lorsque le catalyseur contient au moins un métal ou un oxyde d'un métal du 11?e¿ groupe du tableau périodique des éléments, le support d'oxyde est une zéolite.

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