Abstract: The invention relates to a termination device (10) of a tubular reactor (1) comprising at least one separation element (11) adapted for the separation of solid particles and gaseous effluents and at least one coupling element (12) that is part of an end of said tubular reactor, said separation element being connected to said coupling element, characterized in that each element of the termination device is made of ceramic material. The invention also relates to a tubular reactor (1), having a vertical or substantially vertical axis, of a fluid catalytic cracking unit equipped with a termination device according to the invention and to a corresponding fluid catalytic cracking unit.

Abstract: An injection element (10) for a gas injection system (1) inside 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 a support (11) so that said flow passage opens on one side into a cavity and on the other side into a fluidized catalyst bed, 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.

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.