Selective hydrodesulfurization catalyst and process

B - Operations – Transporting – 01 – J

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196/137, 252/75

B01J 23/882 (2006.01) B01J 35/10 (2006.01) C10G 45/08 (2006.01)

Patent

CA 2244374

A catalyst and process for hydrodesulfurizing naphtha feedstreams wherein the reactor inlet temperature is below the dew point of the feedstock at the reactor inlet so that the naphtha will completely vaporize within the catalyst bed. The catalyst is comprised of about 1 to about 10 wt.% MoO3, about 0.1 to about 5 wt.% CoO supported on a suitable support material. They are also characterized as having an average medium pore diameter from about 60 .ANG. to 200 .ANG., a Co/Mo atomic ratio of about 0.1 to about 1.0, a MoO3 surface concentration of about 0.5 × 10 -4 to about 3.0 × 10 -4 g MoO3/m2, and an average particle size of less than about 2.0 mm in diameter.

L'invention concerne un catalyseur et un procédé pour hydrodésulfurer des naphtas. Dans ce procédé, la température de l'entrée du réacteur est en dessous du point de rosée du naphta de départ, de sorte que le naphta est complètement vaporisé dans le lit du catalyseur. Le catalyseur est constitué d'environ 1 à environ 10 % en poids de MoO3, d'environ 0,1 à environ 5 % en poids de CoO, sur un support approprié. Le catalyseur est, également, caractérisé par le fait qu'il a un diamètre de pore moyen d'environ 60 ANGSTROM à 200 ANGSTROM , un rapport atomique Co/Mo d'environ 0,1 à environ 1,0, une concentration en surface de MoO3 d'environ 0,5 x 10<-4> à environ 3,0 x 10<-4> g de MoO3/m<2> et une granulométrie moyenne, correspondant à un diamètre inférieur à 2,0 mm.

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