An improved method and apparatus for breaking an emulsion

B - Operations – Transporting – 01 – D

Patent

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B01D 17/04 (2006.01)

Patent

CA 2739338

A method of demulsifying an emulsion is provided, the method comprising an initial step of supplying the emulsion to a fluid processor passage (14) having an inlet (16) and an outlet (18), wherein the cross sectional area of the passage (14) between the inlet (16) and outlet (18) does not reduce below the cross sectional area at the inlet (16).A transport fluid is supplied from a transport fluid source (60) to a transport fluid nozzle (34) which circumscribes the passage (14) and opens into the passage (14) intermediate the inlet (16) and the outlet (18). The transport fluid is accelerated through a throat (38) of the transport fluid nozzle (34), the throat (34) having a cross sectional area which is less than that of either the nozzle inlet (36) or nozzle outlet (40). The transport fluid is injected from the nozzle outlet (40) into the emulsion in the passage (14) such that the emulsion is atomised and a vapour-droplet regime is formed comprising a dispersed phase of emulsion droplets within a continuous vapour phase. At least some of the emulsion droplets are vaporised within the vapour-droplet regime and finally the vapour is condensed back to the liquid phase. An apparatus suitable for carrying out this method is also provided.

L'invention concerne un procède destiné à désémulsionner une émulsion, le procède comportant létape initiale consistant à amener lémulsion jusquà un passage (14) de traitement de fluide comportant une entrée (16) et une sortie (18), laire en section droite du passage (14) entre lentrée (16) et la sortie (18) ne diminuant pas en-deçà de laire en section droite à lentrée (16). Un fluide de transport est acheminé dune source (60) de fluide de transport à une buse (34) à fluide de transport qui circonscrit le passage (14) et débouche dans ledit passage (14) entre lentrée (16) et la sortie (18). Le fluide de transport est accéléré à travers un col (38) de la buse (34) à fluide de transport, ledit col (34) présentant une aire en section droite inférieure à celle de lentrée (36) comme de la sortie (40) de la buse. Le fluide de transport est injecté à partir de la sortie (40) de la buse dans lémulsion présente dans le passage (14) de telle sorte que lémulsion soit atomisée et quun régime vapeur-gouttelettes soit formé, comprenant une phase dispersée de gouttelettes démulsion au sein dune phase vapeur continue. Au moins une partie des gouttelettes démulsion est vaporisée dans le régime vapeur-gouttelettes et la vapeur est finalement condensée pour redonner la phase liquide. L'invention concerne également un appareil approprié pour réaliser le présent procédé.

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