Total Raffinage Marketing

Total Raffinage Chimie

Total Raffinage France

Michaël Echard

Marc Bories

Patrick Leroy

Thierry Gauthier

Jean-Christophe Raboin

Romain Lesage

Lassad Rezgui

The invention relates to an orifice chamber designed to expand a gas, in particular intended for a fluid catalytic cracking unit, said orifice chamber comprising the following elements: a chamber having an axis (X), an inlet duct that opens into the chamber, an outlet duct located on the opposite side from the inlet duct following said axis (X), and a plurality of internal plates positioned crosswise to the axis (X) inside the chamber at a distance from one another along the axis (X), each internal plate being provided with a plurality of through-orifices, characterized in that at least the plurality of internal plates is made of a ceramic material.

Ceramic orifice chamber for fluid catalytic cracking unit

The present invention relates to a multi staged cracking and stripping process that can be used in a fluidized-bed catalytic cracking process or FCC (fluidized catalytic cracking) process for maximizing the production of olefins, that is to say of Cand Colefins, in particular propylene and distillates. One subject of the present invention is therefore a multi-staged process for cracking and stripping a fluidized mixture of hydrocarbons and of coked catalyst particles, integrated into a conventional fluidized-bed catalytic cracking process comprising at least one cracking step and one stripping step after separation of the particles of coked catalyst from the cracked effluent during the disengaging/stripping step, characterized in that it comprises at least two steps of cracking at least one hydrocarbonaceous fluid over the separated coked catalyst particles followed by at least two steps of stripping these particles, each cracking step preceding a stripping step. The present invention also relates to a separating and stripping device that implements this process.

Multistage cracking and stripping process in an FCC unit

The invention relates to a method for catalytic cracking to maximize the production of diesel base stocks, comprising a cracking reaction step in an upflow fluidized bed reactor (), a step of separating the cracked hydrocarbons and coked catalyst, a step of fractionating the cracked hydrocarbons and a step of regenerating said coked catalyst, wherein the hydrocarbon feedstock is injected into the upflow reactor on a catalyst partially deactivated by prior coking of at least part thereof in the same upflow reactor, so that the reaction temperature of the effluents leaving said reactor varies from 470 to 600&#xb0; C. The invention also relates to a device for implementing the cracking method.

Method for catalytic cracking with maximization of diesel base stocks

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Montivilliers, France

Michaël Echard