Support device in a radial flow adsorber with gas flow guidance function

Abstract

A support device in a radial flow adsorber having a gas flow guidance function comprises a support platform, a support cylinder, a flow guide pipe, an annular bottom plate, a limiting block, and a support frame, wherein an upper portion of the support platform is filled with adsorbent, the interior of a lower portion of the support platform is connected to the annular bottom plate via the support cylinder, a reinforcing plate is arranged between the support platform and the support cylinder, a hole is opened on the support cylinder or the annular bottom plate and a plurality of flow guide pipes are arranged to guide the gas flow, the annular bottom plate is placed on the support frame, and the limiting block is arranged on the support frame.and the support frame is attached to a cylinder body or lower head of the adsorber by welding. This disclosure is used inside a radial flow adsorber as a support device, primarily to bear the weight of the internal adsorbent and internal parts. When the adsorber operates under alternating high and low temperatures, the device can be maintained in a normal temperature state, generating no deformation and causing no friction between the structures, thus improving the stress distribution of the structures and enhancing the reliability and safety of the device. [Fig. 1]

Description

Title of the invention: Support device in a radial flow adsorber with gas flow guidance function technical field

[0001] This device is applicable to a radial flow adsorber for an air separation installation, with regard to the technical field of gas separation. Prior art

[0002] The role of a purification system in a cryogenic air separation unit is to remove impurities from high-boiling-point gases such as water and carbon dioxide. The system's operating process involves both pressure and temperature changes. The system's core equipment, a radial flow adsorber, is a fatigue vessel. Due to process requirements, the radial flow adsorber operates in two states: adsorption and desorption. The equipment's interior is at normal temperature during adsorption, while the temperature inside the equipment exceeds 150 °C during desorption. Therefore, the equipment's internal components must withstand significant temperature changes. Typically, the adsorber and its internal components are made of carbon steel or stainless steel.Due to thermal expansion and cold contraction of the metal, the internal components of the adsorber all expand and contract when the operating temperature changes. The function of the support device inside the radial flow adsorber is to support the weight of the adsorbent and the internal components. During equipment operation, thermal expansion and cold contraction caused by temperature changes will cause friction between the steel plates of the support device, overall movement, and even seizing and other issues, leading to significant local stress and resulting in damage and device failure. Therefore, there is a need for a support device with a sound structure that can overcome these problems causing significant local stress and improve the reliability and safety of the equipment. Summary of the invention

[0003] The present disclosure provides a support device used inside a radial flow adsorber for an air separation unit, which can support the weight of the internal adsorbent and the internal parts of the adsorber. When the adsorber operates under alternating high and low temperatures, the device can be maintained at normal temperature without any change in shape and size, thus preventing an increase in local stress reduction due to thermal expansion of the structure and improved reliability and device lifespan. The objective of this disclosure is achieved through the following technical diagram. A support device in a radial flow adsorber with a gas flow guidance function comprises a support platform, a support cylinder, a flow guide pipe, an annular bottom plate, a limiting block, and a support frame, in which an upper portion of the support platform is filled with adsorbent, the interior of a lower portion of the support platform is connected to the annular bottom plate via the support cylinder, and a reinforcing plate is arranged between the support platform and the support cylinder.A hole is opened on the support cylinder or the annular lower plate, and a plurality of flow guide pipes are arranged to guide the gas flow. The annular lower plate is placed on the support frame, the limiting block is arranged on the support frame, and the support frame is fixed to the cylinder body or the lower head of the adsorber by welding.

[0004] Preferably, the support platform employs a head in the shape of a spherical cap convex upwards or a circular flat plate or a head in the shape of a spherical cap convex downwards.

[0005] Preferably, the plurality of flow guide pipes is arranged on the support cylinder or the annular lower plate in a regular and oblique manner, and the flow guide pipe is formed in the form of a circular pipe, a square pipe, an oval pipe or any pipe whose opening is a circular hole, a square hole or an oval hole.

[0006] Preferably, there are at least three support frames, which are regularly fixed on a cylinder body of the adsorber or a lower head along the circumferential direction, each of the support frames is welded with the limiting block, and the limiting block is structured in the form of a steel having an L-shaped angle which can limit the rotation or movement of the annular lower plate.

[0007] The present disclosure is used within a radial flow adsorber as a support device, primarily to bear the weight of the internal adsorbent and internal components. When the adsorber operates under alternating high and low temperatures, the device can be maintained in a normal temperature state, without generating any deformation or causing any friction between the structures, thus improving the stress distribution of the structures and enhancing the reliability and safety of the device. Brief description of the drawings

[0008] The [Fig. 1] is a structure diagram of the present disclosure.

[0009] Fig. 2 is a top view of the present disclosure. DETAILED description

[0010] The present disclosure is described below in detail together with the accompanying drawings. With reference to [Fig. 1] to [Fig. 2], the present disclosure provides a support device in a radial flow adsorber having a gas flow guidance function, which comprises a support platform 1, a support cylinder 3, a flow guide pipe 4, an annular lower plate 5, a limiting block 6 and a support frame 7, in which an upper portion of the support platform 1 is filled with adsorbent, an interior of a lower portion of the support platform is connected to the annular lower plate 5 via the support cylinder 3, a reinforcing plate 2 is arranged between the support platform 1 and the support cylinder 3, on the support cylinder 3 or the annular lower plate 5 a hole is opened and a plurality of flow guide pipes 4 are arranged to guide the gas flow,The lower annular plate 5 is placed on the support frame 7, in which the support frame 7 is composed of ribbed reinforcing plates, has a certain strength and is welded onto a cylinder body of the adsorber, the limiting block 6 is arranged on the support frame 7, the support frame 7 is fixed to the cylinder body or a lower head of the adsorber by welding, the support platform 1 employs a head in the shape of a spherical cap convex upwards or a circular flat plate or a head in the shape of a spherical cap convex downwards, the plurality of flow guide pipes 4 is arranged on the support cylinder 3 or the lower annular plate 5 in a regular and oblique manner, and the flow guide pipe 4 is formed in the form of a circular pipe, a square pipe, an oval pipe or any pipe whose opening is a circular hole, a square hole or an oval hole,There are at least three support frames 7, which are regularly fixed to the cylinder body of the adsorber or the lower head along the circumferential direction; each of the support frames 7 is welded to the limiting block 6, and the limiting block 6 is structured in the form of a steel having an L-shaped angle which can limit the rotation or movement of the annular lower plate 5.

[0011] The present disclosure is used inside a radial flow adsorber as a support device, primarily to bear the weight of the internal adsorbent and internal parts. When the adsorber operates under alternating high and low temperatures, the device can be maintained at a normal temperature, without generating any deformation and causing no friction between the structures, so that the stress distribution state of the structures is improved, and the reliability and safety of the device are improved.

[0012] The specific working principle is as follows. The desorption process of a radial flow adsorber involves two stages: heating and cooling. During the heating process, a high-temperature gas enters through an inlet pipe on the upper part of the adsorber and flows towards the central position on the upper surface of the support platform 1. As the high-temperature gas passes through a bed of adsorbent, the heat is removed by desorption, and the high-temperature gas is transformed into a gas at normal temperature, which is then guided to the center of the support platform 1 via the flow guide pipe. Thus, forced convection heat exchange removes heat from the support platform 1, ensuring that the support device is maintained at a constant normal temperature.During the cold blowing process, a gas at room temperature enters through an inlet pipe on the upper part of the adsorber and flows towards the center of the support platform 1. As the gas passes through a bed of adsorbent, it exchanges heat with the adsorbent and transforms into a high-temperature gas that must be discharged. Since the discharged high-temperature gas cannot reach the temperature of the high-temperature gas in the heating stage, the device can still be maintained at room temperature.After the adsorber is manufactured and transported to the site, due to internal stress on the internal parts of the adsorber, the internal parts have a deformation coordination requirement when the temperature changes after the device is installed and during the operating process; since the lower annular plate 5 is placed on the support frame 7, rather than welded to it, and the role of the limiting block 6 is to prevent the lower annular plate 5 from rotating or moving during deformation coordination, the reliability of the structure is ensured.

Claims

Demands

1. A support device in a radial flow adsorber having a gas flow guidance function, comprising a support platform (1), a support cylinder (3), a flow guide pipe (4), an annular lower plate (5), a limiting block (6) and a support frame (7), wherein an upper portion of the support platform (1) is filled with adsorbent, an interior of a lower portion of the support platform is connected to the annular lower plate (5) via the support cylinder (3), a reinforcing plate (2) is arranged between the support platform (1) and the support cylinder (3), on the support cylinder (3) or the annular lower plate (5) a hole is opened and a plurality of flow guide pipes (4) are arranged to guide the gas flow, the annular lower plate (5) is placed on the support frame (7), the limiting block (6) is arranged on the support frame (7),and the support frame (7) is fixed to a cylinder body or lower head of the adsorber by welding.

2. Support device in the radial flow adsorber having the gas flow guidance function according to claim 1, wherein the support platform (1) employs a spherically cap-shaped head convex upwards or a circular flat plate or a spherically cap-shaped head convex downwards.

3. Support device in the radial flow adsorber having the gas flow guidance function according to claim 1, wherein the plurality of flow guide pipes (4) is arranged on the support cylinder (3) or the annular lower plate (5) in a regular and oblique manner, and the flow guide pipe (4) is formed in the form of a circular pipe, a square pipe, an oval pipe or any pipe having an opening that is a circular hole, a square hole or an oval hole.

4. A support device in a radial flow adsorber having a gas flow guidance function according to claim 1, wherein there are at least three support frames (7) which are regularly fixed to a cylinder body of the adsorber or a lower head along the circumferential direction, each of the support frames (7) is welded to the limiting block (6), and the limiting block (6) is structured as a steel having an angle at L-shaped which can limit the rotation or movement of the lower annular plate (5).

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