Process for the dehydration of gases

Details Process for the dehydration of gases Process for the dehydration of gases

B - Operations, Transporting

01

D

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

Patent

CA 2590468

Process for the dehydration of gases, comprising: absorbing water vapour by means of a hygroscopic liquid consisting essentially of one or more C2-C8 glycols and an additive capable of forming a minimum type azeotrope with water; distilling the glycol/water/additive mixture to obtain a top product consisting mainly of the water/additive azeotropic mixture and a bottom product consisting mainly of glycol and additive (hygroscopic liquid); recycling the regenerated hygroscopic liquid to the absorption stage.

L'invention concerne un procédé de déshydration de gaz, qui consiste : à absorber de la vapeur d'eau au moyen d'un liquide hygroscopique constitué essentiellement d'un ou plusieurs glycols en C2-C8 et d'un additif permettant de former un azéotrope de type minimum avec de l'eau; à distiller le mélange de glycol/eau/additif en vue d'obtenir un produit supérieur consistant principalement en un mélange azéotropique d'eau/additif et un produit de fond consistant principalement en du glycol et de l'additif (liquide hygroscopique); à recycler le liquide hygroscopique régénéré à l'étape d'absorption.

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