Dewaxing process

C - Chemistry – Metallurgy – 10 – G

Patent

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C10G 45/64 (2006.01) C10G 47/16 (2006.01)

Patent

CA 2315725

The process of the invention for converting a hydrocarbon oil includes the following steps: (1) contacting a hydrocarbon oil feedstock in the presence of added hydrogen gas with a catalyst selected from the group consisting of a SAPO-11, SAPO-31 or SAPO-41 intermediate pore size silicoaluminophosphate molecular sieve and a hydrogenation component, and mixtures thereof, wherein at least a portion of the feedstock is converted; and (2) passing at least a portion of the converted feedstock to a fractionator, wherein at least a portion of the converted feedstock is fractionated, thereby producing at least one overhead fraction and one bottoms fraction; and (3) mixing at least a portion of the bottoms fraction with the hydrocarbon oil feedstock in step (1).

L'invention porte sur un procédé de conversion d'huiles hydrocarbonées comportant les étapes suivantes: (1) mise en contact de l'apport d'huiles, en présence d'une adjonction d'hydrogène gazeux, avec un catalyseur choisi parmi les tamis moléculaires SAPO-11, SAPO-31 ou SAPO-41 de silicoaluminophosphate à taille intermédiaire de pores et d'un composé d'hydrogénation, et mélange desdits composants, ce qui conduit à une conversion au moins partielle de l'apport; (2) passage d'au moins une particulièrement de l'apport converti dans un fractionneur où au moins une partie de l'apport converti est fractionné, ce qui donne au moins une fraction de distillats de tête et une fraction de produits de fond; (3) mélange d'au moins une partie de la fraction de produits de fond avec l'apport de l'apport de l'étape (1).

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