Novel flame-retardant conductive sulfuric acid corrosion-resistant electrostatic demister

Abstract

The utility model provides a novel flame-retardant conductive sulfuric acid corrosion resistant electrostatic demister, and belongs to the technical field of environmental protection equipment. The problems of stress concentration of a tube bundle and a shell, difficulty in maintenance and high equipment failure rate caused by a hanging type structure of a traditional electrostatic demister are solved. The device comprises a supporting mechanism and a plurality of anode tube bundles, the anode tube bundles are arranged in the supporting mechanism in the vertical direction, a plurality of anode tube bundle fixing plates are sequentially arranged in the supporting mechanism in parallel in the vertical direction, and the anode tube bundles penetrate through the anode tube bundle fixing plates. The supporting mechanism comprises a top horizontal frame and a tube bundle supporting frame which are arranged in parallel, the top horizontal frame is arranged above the tube bundle supporting frame, and the top horizontal frame and the tube bundle supporting frame are connected through a plurality of connecting vertical beams. The anode tube bundle fixing plate located on the lower portion abuts against the tube bundle supporting frame and is matched with the tube bundle supporting frame. The device is mainly used for electrostatic demisting.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection equipment technology, and in particular relates to a novel flame-retardant, conductive, and sulfuric acid corrosion-resistant electrostatic precipitator. Background Technology

[0002] With the continuous development of industrial technology and the expansion of industrial production, many enterprises choose to use electrostatic precipitators to treat acid production from smelting flue gas, titanium dioxide calcination tail gas, and various acid mists from chemical plants. This ensures that the acid mist output from the electrostatic precipitator meets standards, guaranteeing the normal progress of subsequent reactions and ensuring that the final exhaust gas emissions meet standards.

[0003] Currently, in sulfur oxidation process (SOP) and waste acid regeneration process (SAR), the acid mist removal efficiency needs to be no less than 99%, and the equipment life needs to be greater than 5 years. The anode tube bundle material of traditional electrostatic precipitators has insufficient resistance to sulfuric acid corrosion (e.g., the annual corrosion rate of ordinary carbon steel is greater than 0.5mm), and has poor flame retardant performance (UL94 HB level), posing safety hazards. The hanging structure causes stress concentration between the tube bundle and the shell, resulting in structural deformation risk, difficult maintenance, and high equipment failure rate. Utility Model Content

[0004] In view of this, the present invention aims to propose a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic demister to solve the problems of stress concentration in the tube bundle and shell, difficult maintenance, and high equipment failure rate caused by the hanging structure of traditional electrostatic demisters.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic demister, comprising a support mechanism and multiple anode tube bundles. The multiple anode tube bundles are arranged vertically within the support mechanism. Multiple anode tube bundle fixing plates are arranged in parallel along the vertical direction within the support mechanism. The anode tube bundles pass through the multiple anode tube bundle fixing plates. The support mechanism includes a top horizontal frame and a tube bundle support frame arranged in parallel. The top horizontal frame is positioned above the tube bundle support frame. The top horizontal frame and the tube bundle support frame are connected by multiple connecting vertical beams. One of the anode tube bundle fixing plates located below abuts against the tube bundle support frame and cooperates with the tube bundle support frame.

[0006] Furthermore, the tube bundle support frame is provided with a central support beam, and the anode tube bundle fixing plate is provided with a central reserved support position corresponding to the central support beam. The central reserved support position of one of the anode tube bundle fixing plates located below abuts against the central support beam and cooperates with the tube bundle support frame.

[0007] Furthermore, the support mechanism is surrounded by an outer shell, which includes multiple outer shell plates made of metal. The multiple outer shell plates surround the outside of multiple connecting vertical beams. Connecting angle steel is provided between the top of the connecting vertical beams and the bottom of the top horizontal frame. The top of the outer shell plates is connected to the connecting vertical beams through the connecting angle steel.

[0008] Furthermore, both sides of the connecting vertical beam are provided with fixing lugs, and both sides of the connecting vertical beam are connected to the outer shell plates on both sides of the connecting vertical beam through two fixing lugs respectively.

[0009] Furthermore, each of the anode tube bundles contains a cathode wire, with both ends of the cathode wire extending out of the anode tube bundle.

[0010] Furthermore, a demister top housing is provided above the plurality of anode tube bundles, and a top connecting plate is provided at the top of the plurality of anode tube bundles. The plurality of anode tube bundles are connected to the demister top housing through the top connecting plate. A plurality of supports are provided on the outside of the demister top housing, and the bottom of the supports abuts against the top horizontal frame and cooperates with the top horizontal frame.

[0011] Furthermore, a demister bottom housing is provided below the plurality of anode tube bundles, and a bottom connecting plate is provided at the bottom end of the plurality of anode tube bundles. The plurality of anode tube bundles are connected to the demister bottom housing through the bottom connecting plate.

[0012] Furthermore, both the top and bottom shells of the demister are equipped with cathode grids, and the two ends of the cathode wire are respectively connected to the two cathode grids.

[0013] Furthermore, multiple insulating boxes are provided on the outer side of the top housing of the demister.

[0014] Furthermore, a flow guiding device is provided inside the bottom housing of the demister. The flow guiding device is located below the cathode grid inside the bottom housing of the demister. A flow diversion grid is provided at the bottom of the flow guiding device. The bottom of the flow diversion grid is connected to the bottom housing of the demister via a support rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model provides a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic demister. By providing a support mechanism, the original hanging structure is changed to a bottom support structure. The bottom support design balances the stress distribution between the tube bundle and the shell, avoids the structural deformation risk caused by stress concentration in the upper and middle parts of the traditional hanging structure, and enhances the overall support strength of the equipment.

[0017] 2. This utility model provides a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic demister. The outer shell adopts a modular and detachable shell plate, which can protect the tube bundle equipment, facilitate installation, and eliminate the need for non-metallic welding during on-site construction, significantly shortening the construction cycle. The modular structure supports partial disassembly and maintenance without overall shutdown, greatly improving the continuity of system operation. Furthermore, the entire metal shell is similar to a discharge wall, which can conduct all the static electricity inside the equipment to the ground or safety facilities.

[0018] 3. This utility model provides a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic demister, which is equipped with an anode tube bundle fixing plate and a support position reserved in the middle of the anode tube bundle fixing plate. It is effectively supported by the middle support beam of the support mechanism, which solves the problem of middle deformation when there are many tube bundles and avoids the decrease in demisting efficiency due to structural collapse. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to the present invention.

[0021] Figure 2 This is a schematic diagram of the support mechanism in a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to the present invention.

[0022] Figure 3 This is a schematic diagram of the support mechanism and the outer shell in a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to the present invention.

[0023] Figure 4 This is a schematic diagram of the support mechanism and part of the outer shell in a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to the present invention.

[0024] Figure 5 This is a schematic diagram of the anode tube bundle in a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to the present invention.

[0025] Figure 6 This is a top view schematic diagram of the structure of the anode tube bundle fixing plate in a novel flame-retardant, conductive, and sulfuric acid corrosion-resistant electrostatic precipitator according to the present invention.

[0026] Figure 7 This is a schematic diagram of the connection between the top shell of the demister and the top horizontal frame in a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic demister according to the present invention.

[0027] 1-Supporting mechanism, 2-Anode tube bundle, 3-Anode tube bundle fixing plate, 4-Top horizontal frame, 5-Tube bundle support frame, 6-Connecting vertical beam, 7-Middle support beam, 8-Middle reserved support position, 9-Outer shell, 10-Outer shell plate, 11-Connecting angle steel, 12-Fixing ear plate, 13-Cathode wire, 14-Demister top shell, 15-Top connecting plate, 16-Support body, 17-Demister bottom shell, 18-Bottom connecting plate, 19-Cathode grid, 20-Insulation box, 21-Flow guiding device, 22-Flow diversion grid. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0029] See Figure 1-7 This embodiment describes a novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic demister, comprising a support mechanism 1 and multiple anode tube bundles 2. The multiple anode tube bundles 2 are arranged vertically within the support mechanism 1. Multiple anode tube bundle fixing plates 3 are arranged parallel to each other vertically within the support mechanism 1, serving to fix the anode tube bundles 2. The anode tube bundles 2 pass through the multiple anode tube bundle fixing plates 3. The support mechanism 1 includes a parallel top horizontal frame 4 and a tube bundle support frame 5. The top horizontal frame 4 is positioned above the tube bundle support frame 5, and the top horizontal frame 4 and the tube bundle support frame 5 are connected by multiple connecting vertical beams 6. One of the lower anode tube bundle fixing plates 3 abuts against and cooperates with the tube bundle support frame 5. By incorporating the support mechanism 1, the original suspended structure is transformed into a bottom-supported structure. This bottom-supported design balances the stress distribution between the tube bundles and the outer shell, avoiding the structural deformation risk caused by stress concentration in the upper middle part of the traditional suspended structure, and enhancing the overall support strength of the equipment.

[0030] In this embodiment, a central support beam 7 is provided on the tube bundle support frame 5, and a central reserved support position 8 is provided on the anode tube bundle fixing plate 3 corresponding to the central support beam 7. The central reserved support position 8 of the lower anode tube bundle fixing plate 3 abuts against the central support beam 7 and cooperates with the tube bundle support frame 5. The central reserved support position 8 of the anode tube bundle fixing plate 3 is effectively supported by the central support beam 7 of the support mechanism 1, which solves the problem of central deformation when there are many tube bundles and avoids the decrease in demisting efficiency due to structural collapse.

[0031] In this embodiment, the support mechanism 1 is surrounded by an outer shell 9, which includes multiple outer shell plates 10. The outer shell plates 10 are made of metal and surround the outer sides of multiple connecting vertical beams 6. A connecting angle steel 11 is provided between the top of the connecting vertical beams 6 and the bottom of the top horizontal frame 4. The top of the outer shell plates 10 is connected to the connecting vertical beams 6 through the connecting angle steel 11. The outer shell 9 uses modular and detachable outer shell plates 10, which can protect the tube bundle equipment, facilitate installation, and eliminate the need for non-metallic welding during on-site construction, significantly shortening the construction cycle. The modular structure supports partial disassembly and maintenance without overall shutdown, greatly improving the continuity of system operation. Furthermore, the entire metal shell is similar to a discharge wall, which can conduct all static electricity inside the equipment to the ground or safety facilities.

[0032] In this embodiment, both sides of the connecting vertical beam 6 are provided with fixing ear plates 12. The two sides of the connecting vertical beam 6 are respectively connected to the outer shell plates 10 on both sides of the connecting vertical beam 6 through two fixing ear plates 12. The fixing ear plates 12 and the connecting angle steel 11 are used to fix the outer shell plates 10. The fixing ear plates 12 and the connecting angle steel 11 are connected to the outer shell plates 10 by bolts, which facilitates the installation and disassembly of the outer shell plates 10.

[0033] In this embodiment, each of the anode tube bundles 2 is provided with a cathode wire 13, and both ends of the cathode wire 13 extend out of the anode tube bundle 2.

[0034] In this embodiment, a demister top housing 14 is provided above the plurality of anode tube bundles 2. A top connecting plate 15 is provided at the top of the plurality of anode tube bundles 2. The plurality of anode tube bundles 2 are connected to the demister top housing 14 through the top connecting plate 15. A plurality of support bodies 16 are provided on the outside of the demister top housing 14. The bottom of the support body 16 abuts against the top horizontal frame 4 and cooperates with the top horizontal frame 4. The top connecting plate 15 and the demister top housing 14 are connected by fixing steel rings and screws. The top horizontal frame 4 supports the demister top housing 14 through the support bodies on the outside of the demister top housing 14. A manhole is provided on the outside of the demister top housing 14 for maintenance of the internal structure of the demister top housing 14.

[0035] In this embodiment, a demister bottom housing 17 is provided below the plurality of anode tube bundles 2. A bottom connecting plate 18 is provided at the bottom end of the plurality of anode tube bundles 2. The plurality of anode tube bundles 2 are connected to the demister bottom housing 17 through the bottom connecting plate 18. The bottom connecting plate 18 and the demister bottom housing 17 are connected by a fixing steel ring and screws. A manhole is provided on the outside of the demister bottom housing 17 for maintenance of the internal structure of the demister bottom housing 17.

[0036] In this embodiment, both the top housing 14 and the bottom housing 17 of the demister are provided with cathode grids 19. The two ends of the cathode wire 13 are respectively connected to the two cathode grids 19, and the cathode grids 19 are used to fix the two ends of the cathode wire 13.

[0037] In this embodiment, multiple insulating boxes 20 are provided on the outside of the top housing 14 of the demister.

[0038] In this embodiment, a flow guiding device 21 is provided inside the bottom housing 17 of the demister. The flow guiding device 21 is located below the cathode grid 19 inside the bottom housing 17 of the demister. A flow diversion grid 22 is provided at the bottom of the flow guiding device 21. The bottom of the flow diversion grid 22 is connected to the bottom housing 17 of the demister by a support rod. The flow guiding device 21 is formed by connecting multiple flow guiding plates to play a guiding role. The flow diversion grid 22 guides the gas to enter the tube bundle area evenly through its pore design, avoiding excessively high local flow velocity or turbulence, ensuring the maximum effect of the electric field and improving the overall demisting effect.

[0039] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator, characterized in that: It includes a support mechanism (1) and multiple anode tube bundles (2), the multiple anode tube bundles (2) are arranged vertically in the support mechanism (1), multiple anode tube bundle fixing plates (3) are arranged in parallel in the vertical direction in the support mechanism (1), the anode tube bundles (2) are arranged through the multiple anode tube bundle fixing plates (3), the support mechanism (1) includes a top horizontal frame (4) and a tube bundle support frame (5) arranged in parallel, the top horizontal frame (4) is arranged above the tube bundle support frame (5), the top horizontal frame (4) and the tube bundle support frame (5) are connected by multiple connecting vertical beams (6), one of the anode tube bundle fixing plates (3) located below abuts against the tube bundle support frame (5) and cooperates with the tube bundle support frame (5).

2. The novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to claim 1, characterized in that: The tube bundle support frame (5) is provided with a central support beam (7), and the anode tube bundle fixing plate (3) is provided with a central reserved support position (8) corresponding to the central support beam (7). The central reserved support position (8) of the lower anode tube bundle fixing plate (3) abuts against the central support beam (7) and cooperates with the tube bundle support frame (5).

3. The novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to claim 2, characterized in that: The support mechanism (1) is surrounded by an outer shell (9), which includes multiple outer shell plates (10). The outer shell plates (10) are made of metal. The multiple outer shell plates (10) surround the outer side of multiple connecting vertical beams (6). A connecting angle steel (11) is provided between the top of the connecting vertical beam (6) and the bottom of the top horizontal frame (4). The top of the outer shell plate (10) is connected to the connecting vertical beam (6) through the connecting angle steel (11).

4. A novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to claim 3, characterized in that: The connecting vertical beam (6) is provided with fixing ear plates (12) on both sides. The two sides of the connecting vertical beam (6) are respectively connected to the outer shell plates (10) on both sides of the connecting vertical beam (6) through two fixing ear plates (12).

5. A novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to claim 1, characterized in that: Each of the anode tube bundles (2) contains a cathode wire (13), with both ends of the cathode wire (13) extending out of the anode tube bundle (2).

6. A novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to claim 5, characterized in that: A demister top housing (14) is provided above the plurality of anode tube bundles (2). A top connecting plate (15) is provided at the top of the plurality of anode tube bundles (2). The plurality of anode tube bundles (2) are connected to the demister top housing (14) through the top connecting plate (15). A plurality of supports (16) are provided on the outside of the demister top housing (14). The bottom of the supports (16) rests against the top horizontal frame (4) and cooperates with the top horizontal frame (4).

7. A novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to claim 6, characterized in that: A demister bottom housing (17) is provided below the plurality of anode tube bundles (2), and a bottom connecting plate (18) is provided at the bottom end of the plurality of anode tube bundles (2). The plurality of anode tube bundles (2) are connected to the demister bottom housing (17) through the bottom connecting plate (18).

8. A novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to claim 7, characterized in that: The top housing (14) and bottom housing (17) of the demister are both equipped with cathode grids (19), and the two ends of the cathode line (13) are respectively connected to the two cathode grids (19).

9. A novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to claim 6, characterized in that: Multiple insulating boxes (20) are provided on the outside of the top housing (14) of the demister.

10. A novel flame-retardant, conductive, and sulfuric acid-resistant electrostatic precipitator according to claim 7, characterized in that: A flow guiding device (21) is provided inside the bottom housing (17) of the demister. The flow guiding device (21) is located below the cathode grid (19) inside the bottom housing (17) of the demister. A flow diversion grid (22) is provided at the bottom of the flow guiding device (21). The bottom of the flow diversion grid (22) is connected to the bottom housing (17) of the demister by a support rod.

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