A support device in a radial flow adsorber with gas diversion
By designing a support device with gas flow guide, the deflection pipe and limit block are used to prevent structural deformation, the thermal expansion and contraction problem of radial flow adsorbers when temperature changes are solved, and the reliability and safety of the equipment are improved sex.
Patent Information
- Application Number
- CN202110879738.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-08-02
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2041-08-02
AI Technical Summary
The thermal expansion and contraction of the radial flow adsorber during temperature changes leads to friction, translation and jamming of the steel plate of the support device, causing local stress to increase, damage to the device, and affecting the reliability and safety of the equipment.
Design a support device with gas flow guide, including a support platform, support cylinder, flow guide tube, annular base plate, limit block and support frame, which is fixed to the equipment by welding, and uses the flow guide tube and limit The block prevents the structure from deforming, maintains the normal temperature state, and avoids friction and stress increase.
It effectively avoids the increase in local stress caused by thermal expansion of the structure, improves the reliability and service life of the device, and ensures the stable operation of the equipment under high and low temperature alternation conditions.
Smart Images
Figure CN113559671B_ABST
Abstract
Description
Technical Field
[0001] The invention discloses a supporting device in a radial flow adsorber with gas diversion, belonging to the technical field of gas separation. Background Art
[0002] The function of the purification system in the cryogenic air separation unit is to remove high-boiling gas impurities such as water and carbon dioxide. During the operation of the system, there are both pressure and temperature changes. The core equipment of the system, the radial flow adsorber, is a typical fatigue container. Due to the needs of the process, the radial flow adsorber works in two states: adsorption and desorption. During adsorption, the internal temperature of the equipment is room temperature, and during desorption, the temperature inside the equipment is greater than 150°C. Therefore, the internal parts of the equipment need to withstand large temperature changes. Usually, the adsorber and its internal parts are made of carbon steel or stainless steel. Due to the thermal expansion and contraction of metals, the internal parts of the adsorber are expanding and contracting when the working temperature changes. The support device inside the radial flow adsorber has the function of supporting the weight of the adsorbent and internal parts. During the operation of the equipment, the thermal expansion and contraction caused by the temperature change will cause friction between the steel plates of the support device, overall translation, and even jamming, resulting in very large local stress and causing the device to fail. Therefore, a support device with a reasonable structure is needed to overcome these problems that cause large local stress and improve the reliability and safety of the equipment. Summary of the invention
[0003] The present invention provides a supporting device used inside a radial flow adsorber of an air separation device, which can support the weight of the adsorbent and internal parts inside the device. When the device is operating under alternating conditions of normal temperature and high temperature, the device can maintain normal temperature without changes in the external dimensions, thereby avoiding the increase of local stress caused by thermal expansion of the structure, and improving the reliability and service life of the device. The purpose of the present invention is achieved through the following technical scheme: a supporting device in a radial flow adsorber with gas diversion, which includes a supporting platform, a supporting cylinder, a guide tube, an annular bottom plate, a limit block, and a support frame, the upper part of the supporting platform is filled with adsorbent, and the lower part is connected to the annular bottom plate through a supporting cylinder, a pad is arranged between the supporting platform and the supporting cylinder, a hole is opened on the supporting cylinder or the annular bottom plate and a plurality of guide tubes are arranged for gas diversion, the annular bottom plate is placed on the support frame, and a limit block is arranged on the support frame, and the support frame is fixed to the lower head of the cylinder or the device by welding.
[0004] Preferably, the supporting platform adopts an upwardly protruding spherical cap-shaped head or a circular flat plate or a downwardly protruding spherical cap-shaped head.
[0005] Preferably, the plurality of guide tubes are evenly and obliquely arranged on the supporting cylinder or the annular bottom plate, and are in the shape of circular tubes, square tubes, elliptical tubes or any pipes with circular holes, square holes or elliptical holes.
[0006] Preferably, there are at least three support frames, which are evenly fixed on the adsorber cylinder or the lower head along the circumferential direction, and a limit block is welded on each support frame. The limit block structure is an L-shaped angle steel, which can limit the rotation or movement of the annular bottom plate.
[0007] The present invention is used inside a radial flow adsorber as a supporting device, and its main function is to support the weight of the internal adsorbent and internal parts. When the adsorber works under high and low temperature alternation, the device can be maintained at room temperature without deformation, and there is no friction between the structures, thereby improving the stress distribution state of the structure and enhancing the reliability and safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural schematic diagram of the present invention.
[0009] Figure 2 It is a top view of the present invention. DETAILED DESCRIPTION
[0010] The present invention will be described in detail below with reference to the accompanying drawings: Figure 1-2 As shown, the present invention is a supporting device in a radial flow adsorber with gas diversion, which includes a supporting platform 1, a supporting cylinder 3, a guide tube 4, an annular bottom plate 5, a limit block 6, and a supporting frame 7. It is characterized in that the upper part of the supporting platform 1 is filled with adsorbent, and the lower interior is connected to the annular bottom plate 5 through the supporting cylinder 3, a pad 2 is arranged between the supporting platform 1 and the supporting cylinder 3, holes are opened on the supporting cylinder 3 or the annular bottom plate 5 and a plurality of guide tubes 4 are arranged for gas diversion, the annular bottom plate 5 is placed on the supporting frame 7, and the supporting frame 7 is composed of a rib plate and a pad, has a certain strength, is welded on the equipment cylinder, and a limit block is arranged on the supporting frame 7. 6, its support frame 7 is fixed on the lower head of the cylinder or the equipment by welding, the supporting platform 1 adopts a spherical cap head protruding upward or a circular flat plate or a spherical cap head protruding downward, the multiple guide tubes 4 are evenly and obliquely arranged on the supporting cylinder 3 or the annular bottom plate 5, and their shapes are circular tubes, square tubes, elliptical tubes or any pipes with circular holes, square holes, and elliptical holes. There are at least three support frames 7, which are evenly fixed on the adsorber cylinder or on the lower head along the circumferential direction, and a limiting block 6 is welded on each support frame 7. The limiting block 6 structure is an L-shaped angle steel, which can limit the rotation or movement of the annular bottom plate 5.
[0011] The present invention is used inside a radial flow adsorber as a supporting device, and its main function is to support the weight of the internal adsorbent and internal parts. When the adsorber works under high and low temperature alternation, the device can be maintained at room temperature without deformation, and there is no friction between the structures, thereby improving the stress distribution state of the structure and enhancing the reliability and safety of the device.
[0012] Specific working principle: In the analysis process of the radial flow adsorber, there are two stages: heating and cold blowing. During the heating process, the high-temperature gas enters from the top inlet pipe of the equipment and flows to the center of the upper surface of the supporting platform 1. After the high-temperature gas passes through the adsorbent bed, the heat is taken away by the analysis and desorption effect. After becoming a normal temperature gas, it is guided to the center of the supporting platform 1 by the guide pipe. The forced convection heat exchange takes away the heat of the supporting platform 1, so that the supporting device is always in a normal temperature state. During the cold blowing process, the normal temperature gas enters from the top inlet pipe of the equipment and flows to the center of the supporting platform 1. After passing through the adsorbent bed, it undergoes heat exchange with the adsorbent and becomes a high-temperature gas and then flows out. Since the high-temperature gas flowing out at this time cannot reach the temperature of the high-temperature gas in the heating stage, the device can still be maintained at a normal temperature. After the equipment is manufactured and transported to the site, there is internal stress in the internal parts of the equipment. After the device is installed and the temperature changes during operation, the internal parts of the equipment need to be deformed and coordinated. Since the annular bottom plate 5 is placed on the support frame 7, the two are not welded and fixed. The function of the limit block 6 is to prevent the annular bottom plate 5 from rotating or moving during deformation coordination, thereby ensuring the reliability of the structure.
Claims
1. A supporting device in a radial flow adsorber with gas diversion, comprising a supporting platform (1), a supporting cylinder (3), a diversion tube (4), an annular bottom plate (5), a stop block (6), and a supporting frame (7), characterized in that: The upper part of the supporting platform (1) is filled with adsorbent, and the lower part is connected to the annular bottom plate (5) through a supporting cylinder (3). A pad (2) is arranged between the supporting platform (1) and the supporting cylinder (3). A hole is opened on the supporting cylinder (3) or the annular bottom plate (5) and a plurality of flow guide tubes (4) are arranged for gas diversion. The annular bottom plate (5) is placed on a supporting frame (7), and a limit block (6) is arranged on the supporting frame (7). The supporting frame (7) is fixed to the lower head of the cylinder or the equipment by welding. The supporting platform (1) adopts an upwardly protruding spherical cap head or a circular flat plate or a downwardly protruding spherical cap head. The plurality of flow guide tubes (4) are evenly and obliquely arranged on the supporting cylinder (3) or the annular bottom plate (5), and are in the shape of a circular tube, a square tube or an elliptical tube.
2. The supporting device in the radial flow adsorber with gas flow guidance according to claim 1, characterized in that: There are at least three support frames (7) which are evenly fixed on the adsorber cylinder or on the lower head along the circumferential direction. A limit block (6) is welded on each support frame (7). The limit block (6) is an L-shaped angle steel and can limit the rotation or movement of the annular bottom plate (5).