Gasoline sulfur reduction in fluid catalytic cracking

Details Gasoline sulfur reduction in fluid catalytic cracking Gasoline sulfur reduction in fluid catalytic cracking

C - Chemistry, Metallurgy

10

G

C10G 11/05 (2006.01)

Patent

CA 2385439

The sulfur content of liquid cracking products, especially the cracked gasoline, of the catalytic cracking process is reduced by the use of a sulfur reduction additive comprising a non-molecular sieve support containing a high content of vanadium. Preferably, the support is alumina. The sulfur reduction catalyst is used in the form of a separate particle additive in combination with the active catalytic cracking catalyst (normally a faujasite such as zeolite Y) to process hydrocarbon feedstocks in the fluid catalytic cracking (FCC) unit to produce low-sulfur gasoline and other liquid products.

Ce procédé permet de réduire teneur en soufre des produits liquides obtenus par craquage catalytique, en particulier de l'essence de craquage, grâce à l'utilisation d'un additif réducteur de soufre qui comprend un support de tamisage non moléculaire contenant une proportion élevée de vanadium. Ce support est de préférence constitué d'alumine. Le catalyseur de réduction de soufre est utilisé sous forme d'un additif en particules séparées qu'on combine au catalyseur de craquage catalytique actif (généralement un faujasite tel que le zéolite Y) pour traiter les charges d'hydrocarbures dans l'unité de craquage catalytique fluide afin de produire de l'essence à faible teneur en soufre et d'autre produits liquides.

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