Abstract: An enclosure for separating and stripping an effluent containing particles includes a side wall defining an internal volume having a longitudinal axis and, inside the internal volume, a separating section and a stripping section for stripping particles downstream of the separating section relative to the circulation of the particles inside the enclosure. The enclosure includes, upstream of the stripping section or a zone of the stripping section provided with stripping elements extending through the internal cross-section of the enclosure, at least one grille extending transversely to the longitudinal axis, and the projection of a single grille or all the grilles onto a transverse plane perpendicular to the longitudinal axis covers 80 to 100% of the internal cross-section of the enclosure.

Abstract: 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.

Abstract: The invention relates to an orifice chamber (18) designed to expand a gas, in particular intended for a fluid catalytic cracking unit, said orifice chamber comprising the following elements: a chamber (181) having an axis (X), an inlet duct (182) that opens into the chamber (181), an outlet duct (183) located on the opposite side from the inlet duct following said axis (X), and a plurality of internal plates (184) positioned crosswise to the axis (X) inside the chamber at a distance from one another along the axis (X), each internal plate (184) being provided with a plurality of through-orifices (185), characterized in that at least the plurality of internal plates is made of a ceramic material.

Abstract: An injection element (10) for a system for injecting fuel into a regenerator of a fluid catalytic cracking unit, said injection element defining a flow passage (12) and being arranged so as to be able to be fastened to an orifice passing through the regenerator so that one end of the flow passage (12) is connected to a duct for supplying the injection system with fuel and the other end of the flow passage opens inside the regenerator, characterized in that said injection element is made of ceramic material.

Abstract: The invention relates to a slide valve (200) comprising: a body (201) having a through-duct (202) for the passage of a fluid, the flow rate of which is to be controlled, at least one gate (203) slidably mounted inside said body (201), crosswise to said duct (202), and partially or completely closing off said duct (202), said gate (203) being movable between a position in which the duct is partially or completely closed off and a position in which the duct is open, in which the following are defined as portions subject to erosion: portions of the body that delimit the duct (202), at least one portion of said at least one gate (203) located across the duct (202) when said at least one gate partially or completely closes off said duct, characterized in that at least said portions subject to erosion are made of metal covered with a layer of ceramic material or are entirely made of ceramic material.