Attachment for securing high temperature internals to refractory

Details Attachment for securing high temperature internals to refractory Attachment for securing high temperature internals to refractory

1992-08-03

1994-07-12

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

277164, 277230, 422144, 422240, 422241, 422310, 5239601, B01J 818, F27B 1500

Patent

active

053286677

ABSTRACT:
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.

REFERENCES:
patent: 4114907 (1978-09-01), Abbes et al.
patent: 4453723 (1984-06-01), Greenwald
patent: 4493816 (1985-01-01), Becker et al.
patent: 5063028 (1991-11-01), Humble et al.

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