SEALING SYSTEM FOR CYCLONE LEG.

摘要

A system for sealing the leg of a cyclone for separating out solids in gassolid suspension is described. More specifically, the present invention relates to a system for sealing the legs of two stages of cyclones in series used in fluid catalytic cracking (FCC) processes, comprising a terminal configuration which makes use of a longradius curve (31) which is devoid of moving parts, which changes the flow direction of the descending mass flow of catalyst in dense phase into a plane orthogonal to the ascending gaseous flow, which prevents the entry of gaseous phase inside the leg (24), and which promotes efficient sealing and preventing the packingdown of the dense bed of particulates.