A macroporous resin adsorption tank supporting layer structure

Abstract

The utility model relates to the technical field of organic waste gas treatment, and discloses a macroporous resin adsorption tank support layer structure, which includes a support grid, a support ring plate, a coarse metal wire mesh, a fine metal wire mesh, and a flexible tetrafluoroethylene elastic belt. The utility model solves the problem of macroporous resin leakage in the inner wall gap of the macroporous resin adsorption tank of the existing waste gas treatment device, and can ensure the stable and normal operation of the waste gas treatment device.

Description

Technical Field

[0001] The utility model relates to a supporting layer structure of a macroporous resin adsorption tank, which is applied to a waste gas treatment device of an environmental protection project and belongs to the technical field of VOCs organic waste gas treatment. Background Art

[0002] Macroporous resin is a type of polymer adsorption resin with a macroporous structure and no exchange groups. It has a small particle size, generally around 0.6 to 1.2 mm, and has a good macroporous network structure and a large specific surface area. In recent years, it has been widely used in the purification of VOCs organic waste gas in environmental protection projects. Compared with commonly used adsorbents such as activated carbon, macroporous resin is more expensive and is commonly used in waste gas adsorption + water vapor desorption recovery devices. The device uses macroporous resin loaded in an adsorption tank to adsorb organic waste gas. After the adsorption is close to saturation, the macroporous resin is backwashed with superheated steam for desorption and regeneration. After the organic waste gas is adsorbed by the macroporous resin, the purification rate can reach more than 90%.

[0003] The following problems are common in the use of macroporous resin adsorption tanks: macroporous resin is loaded in the adsorption tank as an adsorbent. Due to its small particle size, during the operation of the exhaust gas treatment device, with the disturbance of the airflow, the macroporous resin is very easy to leak into the bottom of the adsorption tank through the support layer along the gaps in the inner wall of the adsorption tank, which not only causes the loss of macroporous resin and affects the adsorption effect, but also blocks the pipeline at the bottom of the adsorption tank, causing the device to fail to operate normally. Therefore, a new support layer structure of a macroporous resin adsorption tank is designed to ensure that there is no gap between the support layer and the inner wall of the tank to avoid the above problems, and the utility model is now proposed. Utility Model Content

[0004] In order to solve the problem that macroporous resin is very easy to leak along the inner wall gap of the adsorption tank, this utility model patent designs a more scientific and reasonable supporting layer structure. The supporting layer structure consists of five parts: supporting grid, supporting ring plate, coarse metal wire mesh, fine metal wire mesh, and flexible tetrafluoroethylene elastic belt.

[0005] The utility model adopts the following structure: a support grid is welded inside a macroporous resin adsorption tank as a supporting layer skeleton, a circle of support ring plates is arranged on the upper part of the support grid near the inner wall of the adsorption tank, the ring plates are welded to the wall of the adsorption tank, a layer of coarse metal wire mesh is placed on the upper part of the support ring plates, the coarse metal wire mesh and the support ring plates are welded, the support grid, the support ring plates and the coarse metal wire mesh jointly provide structural support for the macroporous resin, a layer of flexible polytetrafluoroethylene elastic belt is laid on the upper part of the coarse metal wire mesh along the inner wall of the tank, the width of the flexible polytetrafluoroethylene elastic belt is slightly smaller than the width of the support ring plates, the material is modified polytetrafluoroethylene material that can withstand high temperatures and has sealing adhesives on both sides, after being bonded with the coarse metal wire mesh, a tool is used to compact it to ensure flatness, and then fine metal wire mesh is evenly placed, after the fine metal wire mesh is bonded and compacted with the flexible polytetrafluoroethylene elastic belt, another layer of flexible polytetrafluoroethylene elastic belt is laid on the upper part of the fine wire mesh along the inner wall of the tank, and then the macroporous resin is laid. Through the above structure, under the gravity of the macroporous resin itself, the flexible polytetrafluoroethylene elastic belts on the upper and lower parts of the fine metal wire mesh are tightly fitted with the coarse metal wire mesh and the fine metal wire mesh to form a complete seal, ensuring that there will be no gaps in the entire supporting layer structure at the inner wall of the adsorption tank, thereby avoiding leakage of the macroporous resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic elevation view of the supporting layer structure of the macroporous resin adsorption tank of the utility model.

[0007] Figure 2 This is a partial large-scale drawing of the supporting layer structure of the macroporous resin adsorption tank of the utility model.

[0008] In the figure, 1. Support grid, 2. Support ring plate, 3. Coarse metal wire mesh, 4. Fine metal wire mesh, 5. Flexible PTFE elastic belt DETAILED DESCRIPTION

[0009] The utility model is further described below, but the protection scope of the utility model is not limited thereto.

[0010] like Figure 1 and Figure 2 As shown, the supporting layer structure of the macroporous resin adsorption tank of the utility model comprises a supporting grid 1, a supporting ring plate 2, a coarse metal wire mesh 3, a fine metal wire mesh 4, and a flexible tetrafluoroethylene elastic belt 5.

[0011] When the supporting layer structure is installed, the supporting grid 1, the supporting ring plate 2, the coarse metal wire mesh 3, the flexible tetrafluoro elastic belt 5, the fine metal wire mesh 4, and the flexible tetrafluoro elastic belt 5 are installed in sequence from bottom to top.

[0012] The support grid 1 is made of metal flat steel, and the grid spacing is 40-60 mm. The support grid 1 is welded and fixed to the inner wall of the adsorption tank. A groove is reserved near the inner wall of the tank. The groove width is 30-40 mm and the depth is the same as the thickness of the support ring plate. The groove is used to place the support ring plate 2.

[0013] The support ring plate 2 is made of metal and has a width of about 30 to 40 mm. It is installed in the reserved groove of the support grid 1. The top elevation of the support ring plate 2 is the same as the top elevation of the support grid 1. The support ring plate 2 is welded and fixed to the inner wall of the adsorption tank.

[0014] The coarse metal mesh 3 is made of metal and has an aperture of about 3 meshes. It is installed on the upper part of the support grid 1 and the support ring plate 2. The coarse metal mesh 3 is welded to the support ring plate 2 near the inner wall of the tank, and is tied to the support grid 1 at other positions through fine metal wires to ensure that the coarse metal mesh 3 and the support grid 1 can fit flatly. A layer of flexible polytetrafluoroethylene elastic belt 5 is arranged on the upper part of the laid coarse metal mesh near the inner wall of the adsorption tank. The flexible polytetrafluoroethylene elastic belt 5 is tightly fitted to the coarse metal mesh 3 through its own adhesive.

[0015] The fine metal mesh 4 is made of metal and has an aperture of about 80 meshes, which is smaller than the minimum particle size of the macroporous resin, so that the macroporous resin can be prevented from leaking out from the holes of the fine metal mesh. The fine metal mesh 4 is laid flat on the upper part of the flexible polytetrafluoroelastic belt 5 and the coarse metal mesh 3. The bottom surface of the fine metal mesh 4 is close to the inner wall of the adsorption tank and is tightly fitted with the self-adhesive tape of the flexible polytetrafluoroelastic belt 5. The top surface is close to the inner wall of the adsorption tank and is further provided with the flexible polytetrafluoroelastic belt 5, which is also tightly fitted with the self-adhesive tape. Finally, the macroporous resin is evenly laid flat on the top of the fine metal mesh. The fine metal mesh 4, the coarse metal mesh 3, and the two layers of the flexible polytetrafluoroelastic belt 5 at the wall of the adsorption tank are tightly fitted together by the gravity of the macroporous resin itself, forming a complete seal at the inner wall of the tank to prevent the macroporous resin from leaking down.

[0016] The flexible tetrafluoroethylene elastic band 5 is an expanded polytetrafluoroethylene band with an operating temperature range of -200°C to 200°C and good corrosion resistance. The upper and lower surfaces of the flexible tetrafluoroethylene elastic band can be provided with self-adhesive stickers, which is convenient for the initial installation of the flexible tetrafluoroethylene elastic band 5.

[0017] The above embodiments are only used to explain the inventive concept of the utility model, rather than to limit the protection of the rights of the utility model. Any non-substantial changes to the utility model using this concept should fall within the protection scope of the utility model.

Claims

1. A macroporous resin adsorption tank support layer structure, comprising a support grid (1), a support ring plate (2), a coarse metal wire mesh (3), a fine metal wire mesh (4), and a flexible polytetrafluoroethylene elastic band (5), characterized in that: A support grid (1), a support ring plate (2), a coarse metal mesh (3), a flexible tetrafluoroelastic belt (5), a fine metal mesh (4), and a flexible tetrafluoroelastic belt (5) are sequentially arranged on the inner wall of the adsorption tank from bottom to top, wherein the support grid (1), the support ring plate (2), and the coarse metal mesh (3) provide structural support for the macroporous resin, and the flexible tetrafluoroelastic belt (5) and the fine metal mesh (4) form a complete seal for loading the macroporous resin.

2. The macroporous resin adsorption tank support layer structure according to claim 1, characterized in that The support grid (1) is made of metal flat steel, with a grid spacing of 40 to 60 mm, and serves as a support layer skeleton to support the macroporous resin. A circle of grooves is reserved near the tank wall of the support grid (1), and the groove width is 30 to 40 mm for accommodating the support ring plate (2).

3. The macroporous resin adsorption tank support layer structure according to claim 1, characterized in that The support ring plate (2) is made of metal and has a width of 30 to 40 mm. It is installed in the reserved groove of the support grid (1) to ensure that the top elevation of the support ring plate (2) is the same as the top elevation of the support grid (1). The support ring plate is welded to the wall of the adsorption tank.

4. The macroporous resin adsorption tank support layer structure according to claim 1, characterized in that A coarse metal mesh (3) is installed on the upper part of the support grid (1) and the support ring plate (2). The coarse metal mesh (3) is welded to the support ring plate (2) near the inner wall of the tank, and is tied to the support grid (1) at other positions by metal wires to ensure that the coarse metal mesh (3) and the support grid (1) can fit flatly. A layer of flexible polytetrafluoroethylene elastic band (5) is arranged on the top of the coarse metal mesh near the inner wall of the adsorption tank. The flexible polytetrafluoroethylene elastic band (5) is tightly fitted to the coarse metal mesh (3) through its own adhesive.

5. The macroporous resin adsorption tank support layer structure according to claim 1, characterized in that The fine metal mesh (4) has a pore size smaller than the minimum particle size of the macroporous resin, thereby preventing the macroporous resin from leaking out from the pores of the fine metal mesh (4). The fine metal mesh (4) is laid flat on the flexible tetrafluoro elastic band (5) and the upper part of the coarse metal mesh (3). The bottom surface of the fine metal mesh (4) is close to the tank wall of the adsorption tank and is tightly attached to the adhesive tape of the flexible tetrafluoro elastic band (5). The top surface of the fine metal mesh (4) is close to the inner wall of the adsorption tank and is further provided with the flexible tetrafluoro elastic band (5). The top surface of the fine metal mesh (4) is tightly attached to the adhesive tape of the flexible tetrafluoro elastic band (5), thereby forming a complete seal at the tank inner wall.

6. The macroporous resin adsorption tank support layer structure according to claim 1, characterized in that The flexible tetrafluoroethylene elastic band (5) is an expanded polytetrafluoroethylene band with an operating temperature range of -200°C to 200°C. The upper and lower surfaces of the flexible tetrafluoroethylene elastic band can be provided with self-adhesive stickers and have good corrosion resistance.

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