SEPARATOR WITH DIRECT WINDING OF PARTICLES OF A GASEOUS MIXTURE AND ITS USE IN THERMAL OR CATALYTIC CRACKING IN A FLUIDIZED BED

摘要

The device for separating particles in at least one separation chamber from a gaseous mixture has an inlet for the mixture connected to an elongated reactor (R) which supplies the mixture and a first outlet (4) producing a gaseous effluent from the separation which contains a small quantity of particles and a second outlet (9) producing the majority of the particles. The separation chamber combines a transition zone (1) connected to the inlet with a rectangular or square section passage carrying the mixture to a coiled zone (3). The coiled zone is designed to rotate the mixture in the vertical plane through an angle of less than 360 degrees and comprises two vertical walls (6) between which the rotation occurs, and an external wall (30) describing the coil turning the mixture through between 70 and 225 degrees , and an internal deflector wall (10) connected tangentially to the transition zone and coiling coaxially with the external wall through an angle of at least 30 degrees and at most 90 degrees . The first outlet is one or two tubes, each accessed by a hole pierced in one (each) of the vertical walls of the coiled zone. The outlet is coaxial with the coiled zone so the connection of the outlet and the deflector is tangential. The second outlet has a first wall (31) connected to the external wall of the coiled zone and a second wall (32) connected to the transition zone or the reactor. Also claimed is the use of the above separator where the reactor is a catalytic cracker of hydrocarbons.