Process for recovering processing liquids

B - Operations – Transporting – 01 – D

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B01D 53/14 (2006.01)

Patent

CA 2377403

A process for recovering processing liquids such as gas-treating liquids wherein a feed mixture containing the pro-cessing liquid (10), water, and optionally additional components that are more volatile than the processing liquid and components that are less volatile than the processing liquid, is initially heated in a first heating zone (22) to a temperature sufficient to volatilize at least some of the water and a portion of the processing liquid without decomposing the processing liquid to produce a vapor stream (26) containing volatilised water and processing liquid and a residuum (58) containing the bulk of the processing liquid and less volatile component, the vapour stream (26) being separated from the residuum and treated to produce recycle streams of water (18), purified processing liquid, and low and high boiling liquid fractions recovered from the purified processing liquid.

L'invention concerne un procédé de récupération de liquides de traitement tels que des liquides de traitement de gaz. Dans ce procédé, un mélange d'apport contenant le liquide de traitement, de l'eau et, éventuellement, des composants supplémentaires, qui sont plus volatils que le liquide de traitement et des composants qui sont moins volatils que le liquide de traitement, est initialement chauffé dans une première zone de chauffage jusqu'à une température suffisante pour volatiliser au moins une partie de l'eau et du liquide de traitement sans décomposer ce dernier, de manière à produire un courant de vapeur contenant l'eau et le liquide de traitement volatilisés ainsi qu'un résiduum renfermant la majorité du liquide de traitement et le composant le moins volatil, le courant de vapeur étant séparé du résiduum et traité afin de produire des flux recyclés d'eau, de liquide de traitement purifié, et de fractions de liquide à faible et à forte ébullition récupérées dans le liquide de traitement purifié.

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