Method for the microwave treatment of water-in-oil emulsions

B - Operations – Transporting – 01 – D

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B01D 17/02 (2006.01) B01D 17/04 (2006.01) B01J 19/10 (2006.01) C10G 32/02 (2006.01) C10G 33/00 (2006.01) C10G 33/02 (2006.01) C10G 33/08 (2006.01)

Patent

CA 2680143

A method is described for the microwave emulsion treatment of water-in-oil (W/O) emulsions, said method comprising the steps of a) in the laboratory, determining, for an W/O emulsion (604), (705), (713), (805), (812) the optimum conditions of the variables: water content, salt content, pH value of the aqueous phase, initial temperature, microwave application power, final temperature and drop size distribution to be adjusted in the industrial plant, as a function of the features of the tested crude oil such as viscosity, density, asphaltene content, total acidity, such conditions being those required for obtaining at least 90% separation efficiency of said emulsion in the presence of microwave radiation: b) utilizing such information for the initial adjustment of application conditions of the said method to phase separation units in refineries and production units; c) perform on line tests of the variables of step a) of the process response in the streams effluent from separation units, being said response the water content and salt content tests, so as to feedback the information to the best adjustment of the process conditions for microwave application; and d) additionally, utilizing the on line or laboratory tests of the effect of the method as a tool for the monitoring of the efficiency of the breaking of the W/O emulsion.

La présente invention concerne un procédé de traitement par micro-onde d'une émulsion pour des émulsions eau-dans-l'huile (E/H), ledit procédé comprenant les étapes consistant à a) en laboratoire, déterminer, pour une émulsion E/H (604), (705), (713), (805), (812) les conditions optimales des variables : teneur en eau, teneur en sel, valeur de pH de la phase aqueuse, température initiale, puissance d'application des micro-ondes, température finale et distribution de la taille des gouttes à ajuster dans l'installation industrielle, en fonction des caractéristiques de l'huile brute testée telles que la viscosité, la densité, la teneur en asphaltène, l'acidité totale, ces conditions étant celles requises pour l'obtention d'une efficacité de séparation d'au moins 90 % de ladite émulsion en présence d'un rayonnement micro-onde ; b) utiliser ces informations pour l'ajustement initial des conditions d'application dudit procédé aux unités de séparation de phases dans des raffineries et des unités de production ; c) réaliser des tests en ligne des variables de l'étape a) de la réponse du procédé dans les courants provenant d'unités de séparation, ladite réponse étant les tests de teneur en eau et de teneur en sel, de manière à renvoyer les informations pour ajuster au mieux les conditions du procédé pour l'application de micro-ondes ; et d) en outre, utiliser les tests en ligne ou de laboratoire de l'effet du procédé en tant qu'un outil de surveillance de l'efficacité de rupture de l'émulsion E/H.

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