Device and process for dehydration of water absorbent

Details Device and process for dehydration of water absorbent Device and process for dehydration of water absorbent

B - Operations, Transporting

01

D

B01D 3/34 (2006.01) B01D 53/26 (2006.01) B01D 53/28 (2006.01)

Patent

CA 2300870

There is described a method for regeneration of triethylene glycol (TEG) that has been used as a drying medium to remove water from a fluid such as natural gas, where a drier TEG is recovered at the bottom fraction in a regeneration column (7), where water vapor together with other gases is removed at the top fraction and where the partially dried TEG from the regeneration column (7) optionally is also supplied to a stripping column (9) for further dehydration, where in the optional stripping column (9) and in the still column (7) there is supplied a stripping gas in countercurrent to the TEG stream, where as stripping gas there is mainly used gas which is recovered from the top fraction from the regeneration column (7). There is also described an apparatus for carrying out the method.

L'invention concerne un procédé de régénération de triéthylèneglycol (TEG) utilisé comme milieu de dessication pour le retrait de l'eau d'un fluide comme du gaz naturel, un TEG siccatif étant récupéré au niveau de la fraction inférieure d'une colonne de régénération (7). La vapeur d'eau est supprimée conjointement avec d'autres gaz, au niveau de la fraction supérieure, et le TEG partiellement séché provenant de la colonne de régénération (7) est éventuellement envoyé à la colonne de stripping (9) pour être encore déshydraté. Un gaz de stripping est envoyé à contre-courant par rapport au flux de TEF, à une colonne de stripping (9) et à la colonne statique (7). Le gaz récupéré dans la fraction supérieure de la colonne de régénération (7) est principalement utilisé comme gaz de stripping. Un appareil permettant la mise en oeuvre du procédé est également décrit.

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