Process for producing a gas stream depleted of mercaptans

Details Process for producing a gas stream depleted of mercaptans Process for producing a gas stream depleted of mercaptans

B - Operations, Transporting

01

D

B01D 53/04 (2006.01) B01D 53/14 (2006.01)

Patent

CA 2614169

The invention provides a process for producing a gas stream depleted of RSH from a feed gas stream comprising natural gas, RSH and aromatic compounds selected from the group of benzene, toluene, o-xylene, m-xylene and p-xylene, the process comprising the steps of: (a) contacting the feed gas stream with absorbing liquid comprising a physical solvent in an aromatic compound removal zone to obtain loaded absorbing liquid comprising aromatic compounds selected from the group of benzene, toluene, o-xylene, m-xylene and p-xylene and a gas stream depleted of these aromatic compounds; (b) contacting the gas stream obtained in step (a) with solid adsorbent in a mercaptan removal zone to obtain solid adsorbent loaded with RSH and the gas stream depleted of RSH.

L'invention fournit un procédé de production d~un flux de gaz dépourvu de RSH à partir d'un flux de gaz d'alimentation comprenant du gaz naturel, RSH et des composés aromatiques choisis dans le groupe constitué par le benzène, le toluène, le o-xylène, le m-xylène et le p-xylène, le procédé comprenant les étapes consistant à : (a) mettre en contact le flux de gaz d'alimentation avec un liquide absorbant comprenant un solvant physique dans une zone d~élimination de composés aromatiques pour obtenir un liquide absorbant chargé comprenant des composés aromatiques choisis dans le groupe constitué par le benzène, le toluène, le o-xylène, le m-xylène et le p-xylène et un flux de gaz dépourvu de ces composés aromatiques ; (b) mettre en contact le flux de gaz obtenu dans l~étape (a) avec un adsorbant solide dans une zone d~élimination de mercaptans pour obtenir un adsorbant solide chargé de RSH et le flux de gaz dépourvu de RSH.

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