Direct production of high purity fischer-tropsch wax

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 1/06 (2006.01) B01J 8/22 (2006.01) C07C 7/163 (2006.01) C10G 2/00 (2006.01) C10G 45/14 (2006.01)

Patent

CA 2451705

A hydrocarbon wax product from a hydrocarbon synthesis slurry comprising liquid synthesis product and catalyst particles is purified by introducing a portion of hydrocarbon synthesis slurry from a hydrocarbon synthesis zone to a treatment zone in which a treatment gas contacts the hydrocarbon synthesis slurry. Hydrogen or a hydrogen-containing gas is useful as the treatment gas. The gas treatment removes impurities from the hydrocarbon wax portion of the hydrocarbon synthesis slurry. Purified wax product is separated and removed in situ via wax withdrawal means. This avoids or minimizes the need for further treating the wax product.

L'invention concerne une cire d'hydrocarbure produite à partir d'une bouillie de synthèse d'hydrocarbure. Cette cire comprend un produit de synthèse liquide et des particules de catalyseur. Pour la purifier, on introduit une partie de la bouillie de synthèse d'hydrocarbure à partir d'une zone de synthèse d'hydrocarbure jusqu'à une zone de traitement dans laquelle un gaz de traitement entre en contact avec la bouillie de synthèse d'hydrocarbure. L'hydrogène ou un gaz contenant de l'hydrogène est utile comme gaz de traitement. Ce traitement retire les impuretés de la partie formant cire d'hydrocarbure de la bouillie de synthèse d'hydrocarbure. La cire purifiée est séparée et retirée in situ via des moyens de retrait de la cire, ce qui évite ou réduit la nécessité de traiter la cire.

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