US 2016/0243516 A1 · CATALYST SUPPORT GRID

Abstract

A support grid for a chemical reactor fixed bed catalyst. The support grid is formed of (i) a center support cylinder, made in areas of a vertical cylinder, that is assembled within the vessel on the bottom closure head; (ii) a peripheral support skirt located at the outer circumference of the grid, assembled in sections inside the reactor pressure vessel, that sets without welding to bottom closure head of the reactor vessel; (iii) a set of radial support arms that extend from the center support structure to the support skirt to tie these sections into a rigid frame to support the catalyst bed support grid wedges; and (iv) a grid or disc formed of a plurality of catalyst bed support grid wedges or sections that are radial in orientation and are assembled inside the reactor pressure vessel to form a disc that is about 80% of the reactor vessel in outside diameter.

Claims28

Dependent claims

A reactor, comprising:

a reactor vessel having an internal surface, a top and a bottom;
a catalyst bed located within the reactor vessel;
and
a catalyst support grid in communication with the reactor internal surface and supporting the catalyst bed, the catalyst support grid being located at the bottom of the reactor vessel, the catalyst support grid comprising a support center centered over a reactor vessel outlet nozzle at the bottom of the reactor vessel, a peripheral support skirt located at an outer circumference of the catalyst support grid, a plurality of horizontally positioned arms that extend radially from the support center to the support skirt to tie together sections of the support skirt into a rigid frame, and a disc or grid formed of a plurality of support grid sections or wedges,
wherein the disc or grid is supported by the support skirt, and wherein an inner diameter and an inner circumferential edge of the disc or grid rest on the support center, and an outer diameter and outer circumferential edge of the disc or grid rest on the support skirt.

2 more elements

A catalyst support grid assembly for a bottom of a chemical rector, the catalyst support grid assembly consisting of:

a support center in the form of a cylinder formed of a plurality of cylinder sections, the support center being centered over an outlet nozzle of the chemical reactor;
a peripheral support skirt located on an outer circumference of the catalyst support grid assembly, the peripheral support skirt being formed of a plurality of skirt sections;
a plurality of radial support arms extending from an outer surface of the support center and in a horizontal direction to the peripheral support skirt, the plurality of radial support arms supporting the peripheral support skirt and tying the plurality of support skirt sections into a rigid frame;
a disc or grid formed of a plurality of support wedges or sections that extend radially and horizontally, wherein the disc or grid is supported by the rigid frame, wherein an inner diameter and an inner circumferential edge of the disc or grid rest on the support center, and an outer diameter and outer circumferential edge of the disc or grid rest on the peripheral support skirt;
and
a cover plate having a circular configuration and provided with a central opening, the cover plate being located over the support center, and wherein the outer diameter of the disc or grid is about equal to an outer diameter of the support skirt and wherein the inner diameter of the disc or grid is about equal to an outer diameter of the cover plate.

3 more elements

Dependencies are inferred from the claim text.

Catalyst support grid

Life of this patent

Catalyst support grid

Life of this patent

Abstract

Claims28