Selective separation of fluid compounds utilizing a membrane...

B - Operations – Transporting – 01 – D

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B01D 61/36 (2006.01) C07C 7/144 (2006.01) C07C 15/08 (2006.01) C10G 31/11 (2006.01)

Patent

CA 2530277

Apparatus and processes are disclosed for economical separation of fluid mixtures utilizing perm-selective membranes. Broadly, apparatus of the invention comprises a plurality of membrane modules in counter-current cascade arrenangement comprising a solid perm-selective membrane and means for controlling enthalpy of selected fluids within the apparatus. Advantageously, the membrane modules are disposed in a first product group, a second product group, and at least one intermediate group. Apparatus of the invention is particularly useful for simultaneous. recovery of a very pure permeate product, and/or a desired non-permeate stream, from fluid mixtures of two or more compounds which when subjected to appropriately altered conditions of temperature and/or pressure exhibit a bubble point.

L'invention concerne des appareils et procédés destinés à une séparation économique de mélanges fluides à l'aide de membranes perm-selectives. L'appareil de l'invention comprend généralement une pluralité de modules membranes comportant une membrane perm-sélective solide et un moyen de contrôle de l'enthalpie des fluides sélectionnés dans l'appareil. Les modules membranes sont disposés avantageusement dans un premier groupe produit, un deuxième groupe produit et au moins un groupe intermédiaire. L'appareil selon l'invention est particulièrement utile pour simultanément récupérer un produit perméat très pur et/ou un flux non perméat souhaité, à partir des mélanges fluides d'au moins deux composés qui, lorsqu'ils sont soumis à des conditions modifiées appropriées de température et/ou de pression, ont un point bulle.

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