Sealing system for a fluid catalyst cracking regenerator

摘要

A regenerator for an FCC apparatus. The regenerator includes a riser inside of a shell. The riser includes a cone and a cone skirt. An annulus is formed between the riser and the shell. A sealing system for keeping catalyst out of a portion of the annulus comprises a first sealing element and a second sealing element disposed above the second sealing element. The second sealing element comprises a ring having one or more plates being movable to accommodate the thermal expansion of the riser.

主权项

1. A regenerator for regenerating catalyst from an FCC reactor, the regenerator comprising:
an internal riser comprising a cone and a cone skirt, a shell surrounding the internal riser and forming an annulus between an outer surface of the riser and an inner surface of the shell, a bottom of the cone skirt being secured to the shell; a primary seal disposed in the annulus between the internal riser and the shell; and, a secondary seal disposed above the primary seal, wherein the secondary seal comprises a sealing ring including at least one pivotable plate.