Process for removal of nitrogen containing contaminants from...

C - Chemistry – Metallurgy – 10 – G

Patent

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C10G 67/06 (2006.01) C10G 25/03 (2006.01) C10G 45/02 (2006.01) B01J 21/06 (2006.01) B01J 37/03 (2006.01)

Patent

CA 2510872

The present invention is directed to the removal of nitrogen and sulfur containing impurities from high molecular weight petroleum feedstock obtained from fluid cracking catalyst or distillation zone of a petroleum treatment plant. The present process comprises first treating C12 and higher hydrocarbon petroleum feedstock having nitrogen and sulfur containing compounds therein with a porous, particulate adsorbent comprising a silica matrix having an effective amount of metal atoms therein to cause the adsorbent to have Lewis acidity of at least 500 ~mol/g and then treating the resultant feedstock to catalytic hydrodesulfurization to produce a hydrocarbon fuel having low sulfur and nitrogen content.

La présente invention concerne le déplacement d'impuretés contenant de l'azote et du soufre de pétrole de base de haut poids moléculaire provenant de la zone de craquage liquide à catalyse ou de zone de distillation d'une installation de traitement de pétrole. Le procédé actuel consiste d'abord à traiter d'abord les constituants en C 12 et plus du pétrole de base comportant des composés contenant de l'azote et du soufre avec un adsorbant poreux, particulaire comprenant une matrice de silice ayant une quantité efficace d'atomes métalliques provoquant pour l'adsorbant une acidité de Lewis d'au moins de 500 ?mol/g et puis à traiter la matière de base résultante par hydrodésulfuration catalytique afin de produire un carburant d'hydrocarbure ayant une faible teneur en soufre et en azote.

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