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US 5,328,667 AGranted
Attachment for securing high temperature internals to refractory lined pressure vessels
AssigneeUop LLC
InventorDaniel R. Johnson
Life of this patent
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AssigneeUop LLC
InventorDaniel R. Johnson
Estimating the term…
A special sealing arrangement provides a chamber between hot metallic internals attached to cold wall pressure vessel shells to preserve the integrity of the lining and to minimize thermal stresses imposed on the shell and the internals. The sealing element of this invention is a mesh blanket composite having opposite ends secured by different brackets to the internal structure and the cold wall pressure vessel shell. The membrane composite allows gases to escape from a heat transfer chamber between the internal structure and the pressure vessel shell while blocking the passage of catalyst into the chamber. This catalyst seal device is particularly useful in FCC units where fine catalyst particles can migrate into expansion chambers provided between an internal cone and the regenerator shell.
A vessel and partition for containing particulate material comprising:
A regeneration apparatus for the high temperature regeneration of particulate material, said apparatus comprising:
A gas permeable seal for blocking the migration of particulate material between flexible members, said seal comprising a first bracket, a second bracket, a space defined by adjacent sides of said first and second brackets, a first set of lugs fixed to said first bracket and extending into said space, a second set of lugs fixed to said second bracket and extending into said space, a tube extending in a direction parallel to said adjacent sides and supported by said lugs, and a gas permeable sheet of flexible mesh positioned over said tube and bridging said space, having a first edge fixed to said first bracket and a second edge fixed to said second bracket.
Dependencies are inferred from the claim text.