Fluid Solids Contacting Device

Patent metadata

Field	Value
Publication number	US-2016375419-A1
Application number	US-201514751424-A
Country	US
Kind code	A1
Filing date	Jun 26, 2015
Priority date	Jun 26, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

A fluid solids contacting device comprising a vessel; a first grid assembly section which comprises a plurality of horizontal chords spaced horizontally apart from each other and a plurality of grid platforms inserted between the horizontal chords; wherein each horizontal chord comprises a structural member with sufficient mechanical strength to withstand fluidized forces in the vessel; a plurality of chairs attached to an inside surface of the vessel and spaced circumferentially apart to support the structural member; and wherein each structural member is supported on one or more of the plurality of chairs is provided.

First claim

We claim:

1 . A fluid solids contacting device comprising:
a vessel; a first grid assembly section which comprises a plurality of horizontal chords spaced horizontally apart from each other and a plurality of grid platform(s) inserted between the horizontal chords; wherein each horizontal chord comprises a structural member with sufficient mechanical strength to withstand fluidized forces in the vessel; a plurality of chairs attached directly or indirectly to an inside surface of the vessel and spaced circumferentially apart to support the structural member; and wherein each structural member is supported on one or more of the plurality of chairs.

2 . The fluid solids contacting device according to claim 1 , further comprising one or more additional grid assembly section(s) spaced vertically apart from each other and from the first grid assembly section.

3 . The fluid solids contacting device according to claim 1 , wherein the structural member comprises a bottom plate, a center plate extending upwardly from a centerline of the bottom plate and capped by a top plate and wherein the grid platforms are supported on the bottom plates and/or the top plates.

4 . The fluid solids contacting device according to claim 1 , wherein the grid platforms comprise one or more of the group consisting of subway grating, chevrons, packing structures or any structure which forms a flow obstruction and is capable of breaking bubbles.

5 . The fluid solids contacting device according to claim 1 , where a gas slot velocity is less than 8 ft/s.

6 . The fluid solids contacting device according to claim 1 , wherein each grid platform is attached to one or more horizontal chords in a manner to prevent upward movement of the grid platform.

7 . The fluid solids contacting device according to claim 1 , wherein the device is a reactor, a combustor, a catalyst conditioner or a catalyst stripper.

8 . The fluid solids contacting device according to claim 7 , where the reactor, combustor, catalyst conditioner or catalyst stripper is used in a dehydrogenation process wherein one or more of the group consisting of ethane, propane, butane, n-butane, iso-butane, isobutene, n-butene, ethylbenzene, cumene, and any combination of two or more thereof are used as a primary feedstock.

9 . The fluid solids contacting device according to claim 8 , where the device is a reactor or a combustor and exhibits co-current upflow conditions.

10 . The fluid solids contacting device according to claim 8 , where the device is a catalyst conditioner or catalyst stripper and exhibits countercurrent flow conditions.

Assignees

• Dow Global Technologies Llc

Inventors

• Pretz Matthew T
• Shaw Don F
• Sandoval Fermin A

Classifications

• C07C5/333

  Catalytic processes · CPC title

• B01J19/30

  Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer · CPC title

• B01J19/24

  Stationary reactors without moving elements inside (B01J19/08, B01J19/26 take precedence; with stationary particles B01J8/02) · CPC title

• B01J8/44 Primary

  Fluidisation grids · CPC title

• B01J8/18 Primary

  with fluidised particles {(combustion apparatus with fluidised bed in general F23C10/00; furnaces with fluidised bed F27B15/00)} · CPC title