Removal of impurities from a hydrocarbon component or fraction

Details Removal of impurities from a hydrocarbon component or fraction Removal of impurities from a hydrocarbon component or fraction

C - Chemistry, Metallurgy

10

G

C10G 21/20 (2006.01)

Patent

CA 2331861

A process for removing impurities from a hydrocarbon component or fraction comprises mixing, in a liquid-liquid extraction step, an impurity-containing liquid hydrocarbon component or fraction, as an impure liquid hydrocarbon feedstock, with an acetonitrile-based solvent. Thereby, at least one impurity is extracted from the hydrocarbon component or fraction into the solvent. There is withdrawn from the extraction step, as a raffinate, purified hydrocarbon component or fraction, while there is withdrawn from the extraction step, as an extract, impurity-containing solvent.

L'invention concerne un procédé qui permet d'éliminer les impuretés d'un composant ou d'une fraction d'hydrocarbures. Le procédé consiste à mélanger, durant une étape d'extraction liquide-liquide, un composant ou une fraction d'hydrocarbures liquide contenant une impureté, sous forme de charge d'alimentation en hydrocarbures liquide impure, avec un solvant à base d'acétonitrile. Au moins une impureté est ainsi extraite dudit composant ou de ladite fraction et passe dans le solvant. Ce procédé permet d'obtenir, à l'issue de l'étape d'extraction, la composante ou la fraction d'hydrocarbures purifiée sous forme de raffinat et le solvant contenant l'impureté sous forme d'extrait.

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