An internal support device used in a radial flow adsorber

Abstract

The invention discloses an internal support device used in a radial flow adsorber, comprising a support platform, an annular skirt, an inner cover shell, and a support seat. The support platform adopts an upward convex head, and its bottom is connected to the support seat through an annular skirt seat. The annular skirt seat is provided with a pad and an annular bottom plate at the connection between the support platform and the support seat, and a certain number of reinforcing ribs are evenly distributed around the side of the annular skirt seat to ensure the strength of the structure. The inner cover shell is arranged in the annular skirt seat, and the annular skirt seat, the inner cover shell, and the annular bottom plate together form a drainage groove, and a drainage hole is provided on the annular bottom plate. The accumulated water in the drainage groove is discharged from the drainage hole to the outside of the equipment through a drainage pipe. The device has the characteristics of simple structure, convenient installation, high use efficiency, and improved reliability and safety of adsorption equipment of large air separation units under long-term use.

Description

Technical Field

[0001] The invention relates to an internal component supporting device used in a radial flow adsorber, belonging to the technical field of supporting devices in adsorbers. Background Art

[0002] In the air separation of oxygen and nitrogen by deep freezing, the radial flow adsorber in the purification system is used to pre-treat the air and remove impurities such as moisture, CO2, acetylene, and some hydrocarbons. The adsorbent is placed in two interlayers composed of three concentric grid barrels, which are called inner barrel, middle barrel, and outer barrel from inside to outside. There are usually two types of adsorbents placed in the adsorber. Molecular sieves are placed between the inner barrel and the middle barrel, and activated alumina is placed between the middle barrel and the outer barrel. The total weight of the adsorbent and the internal parts such as the grid barrel usually reaches tens or even hundreds of tons. After a certain period of adsorption, the adsorber needs to be regenerated. The regeneration is carried out by passing high-temperature regeneration gas, and the temperature is usually above 150°C. When the adsorber works alternately in the adsorption and regeneration state, the working temperature of its internal parts also changes cyclically between normal temperature and high temperature. In the structural design of the radial flow adsorber, in order to avoid the temperature difference stress caused by temperature alternation, the grid barrel needs to be able to expand and contract freely. Therefore, a reliable supporting device is needed, which can not only support the weight of the adsorbent and internal parts, but also ensure the structural strength under temperature alternating cycle conditions. Summary of the invention

[0003] The purpose of the present invention is to provide a filler and internal support device in a radial flow adsorber, which can ensure the structural strength under temperature alternating conditions while supporting the weight of the adsorbent and the internals, and improve the reliability and safety of the adsorption equipment of a large air separation unit under long-term use. The purpose of the present invention is achieved through the following technical scheme: an internal support device used in a radial flow adsorber, which includes a support platform, an annular skirt, an inner cover shell, and a support seat. The support platform adopts an upward convex head, and its bottom is connected to the support seat through an annular skirt. The annular skirt is respectively provided with a pad and an annular bottom plate at the connection between the support platform and the support seat, and a certain number of reinforcing ribs are evenly distributed around the side of the annular skirt to ensure the strength of the structure. The inner cover shell is arranged in the annular skirt, and the annular skirt, the inner cover shell, and the annular bottom plate together form a drainage groove, and a drainage hole is opened on the annular bottom plate, and the accumulated water in the drainage groove is discharged from the drainage hole to the outside of the equipment through a drainage pipe.

[0004] Preferably, there are 8 to 12 support seats, which are evenly distributed in an annular direction below the support platform, wherein each support seat is composed of a horizontally arranged support plate, two vertical ribs, and a pasting plate, and the pasting plate is connected to the equipment cylinder by welding.

[0005] Preferably: the support platform and the annular skirt are connected by welding, the annular skirt is welded to the annular base plate at the bottom, the support seat is fixedly connected to the equipment cylinder by welding, an oblong hole is opened on the support plate of the support seat, a circular hole is opened on the annular base plate, the oblong holes and the circular holes are connected between the support seat and the annular base plate by bolts, and when the equipment works under high temperature, the radial expansion of the device is achieved by radial sliding of the bolts in the oblong holes.

[0006] Preferably, the opening directions of the oblong holes are all radially aligned with the center of the circle.

[0007] The invention has the characteristics of simple structure, convenient installation, high use efficiency, and improved reliability and safety of adsorption equipment of large-scale air separation device under long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic front view of the supporting device structure of the present invention.

[0009] Figure 2 yes Figure 1 Top view of the middle ring base plate.

[0010] Figure 3 yes Figure 1 Top view of the middle support seat. DETAILED DESCRIPTION

[0011] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-3The present invention is shown as an internal support device used in a radial flow adsorber, which includes a support platform 1, an annular skirt seat 3, an inner cover shell 7, and a support seat 8. The support platform 1 adopts an upward convex head, and its bottom is connected to the support seat 8 through the annular skirt seat 3. The annular skirt seat 3 is respectively provided with a pad 2 and an annular bottom plate 6 at the connection between the support platform 1 and the support seat 8, and a certain number of reinforcing ribs are evenly distributed around the side of the annular skirt seat 3 to ensure the strength of the structure. The inner cover shell 7 is arranged in the annular skirt seat 3, and the annular skirt seat 3, the inner cover shell 7, and the annular bottom plate 6 together form a drainage groove, and a drainage hole is opened on the annular bottom plate 6, and the accumulated water in the drainage groove is discharged from the drainage hole to the outside of the equipment by a drainage pipe 9. The support seat 8 is provided with 8-12, all of which are The support base 8 is evenly distributed in the annular direction below the support platform 1, wherein each support seat is composed of a horizontally arranged support plate, two vertical ribs, and a plate, and the plate is connected to the equipment cylinder by welding. The support platform 1 and the annular skirt seat 3 are connected by welding, and the annular bottom plate 6 at the bottom of the annular skirt seat 3 is welded. The support seat 8 is fixedly connected to the equipment cylinder by welding, and an oblong hole 10 is provided on the support plate of the support seat 8, and a circular hole is provided on the annular bottom plate 6. The oblong holes and the circular holes are connected by bolts 5 to connect the support seat 8 and the annular bottom plate 6. When the equipment is working under high temperature, the radial expansion of the device is achieved by radial sliding of the bolts in the oblong holes, and the opening directions of the oblong holes are all radially aligned with the center of the circle.

[0012] The supporting device described in the present invention belongs to the internal parts of the radial flow molecular sieve adsorber of the air separation device. The interior of the adsorber is usually filled with adsorbents such as molecular sieves and alumina. The total weight of these adsorbents and the total weight of the internal parts used to fix the adsorbents directly act on the supporting platform 1 of the supporting device described in the present invention. The weight is transferred to 8-12 support seats 8 through the annular skirt 3. The structures of the pad 2 and the rib plate 4 both play a reinforcing role, improve the local stress distribution, and ensure the strength of the entire device.

[0013] The adsorber is subjected to high temperature during operation, and the equipment and internal parts will expand after being heated. The thermal expansion of the support device of the present invention is achieved by the bolts causing radial displacement in the oblong holes 10. A circular hole is provided on the annular bottom plate 6, and an oblong hole 10 is provided on the support seat, and the two are connected by bolts. The oblong holes provided on the support seat evenly distributed along the circumference are all radially aligned, ensuring that the entire device can only undergo radial displacement.

[0014] Specific working principle: During the operation of the adsorber, processed air enters from the bottom of the equipment, and the processed air carries a large amount of free water or condensed water. The supporting device described in the present invention adopts a convex head as the supporting platform 1. The cavity formed by the convex head in the equipment has a buffering effect on the air flow, and the free water carried therein is collected in the water tank composed of the inner cover shell 7, the annular skirt 3, and the annular bottom plate 6, and then discharged to the outside of the equipment through the drain pipe 9.

Claims

1. An internal support device for a radial flow adsorber, comprising a support platform (1), an annular skirt seat (3), an inner casing (7), and a support seat (8), characterized in that The support platform (1) adopts an upward convex head, and its bottom is connected to the support seat (8) through an annular skirt seat (3). The annular skirt seat (3) is provided with a pad (2) and an annular bottom plate (6) at the connection between the support platform (1) and the support seat (8), and a certain number of reinforcing ribs are evenly distributed around the side of the annular skirt seat (3) to ensure the strength of the structure. The inner cover shell (7) is arranged in the annular skirt seat (3). The annular skirt seat (3), the inner cover shell (7) and the annular bottom plate (6) together form a drainage groove, and a drainage hole is opened on the annular bottom plate (6). The accumulated water in the drainage groove is discharged from the drainage hole to the outside of the equipment through a drainage pipe (9). The support platform (1) The annular skirt seat (3) is connected to the annular bottom plate (6) at the bottom of the annular skirt seat (3), and the support seat (8) is fixedly connected to the equipment cylinder by welding. Each support seat is composed of a horizontally arranged support plate, two vertical rib plates, and a plate, and the plate is connected to the equipment cylinder by welding. The support plate of the support seat (8) is provided with an oblong hole (10), and the annular bottom plate (6) is provided with a circular hole. The oblong holes and the circular holes are connected to the support seat (8) and the annular bottom plate (6) by bolts (5). When the equipment is working under high temperature, radial expansion of the device is achieved by radial sliding of the bolts (5) in the oblong holes.

2. The internals support device used in the radial flow adsorber according to claim 1, characterized in that The support seats (8) are provided in a number of 8 to 12 and are evenly distributed in an annular direction below the support platform (1).

3. The internals support device used in the radial flow adsorber according to claim 1, characterized in that The opening directions of the oblong holes are all arranged radially aligned with the center of the circle.

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