Waste gas filtering and purifying modular assembly

Abstract

The utility model discloses a waste gas filtering and purifying modularized assembly which comprises a waste gas filtering cylinder, a gas inlet pipe is fixedly installed at one end of the waste gas filtering cylinder through a flange, an exhaust pipe is fixedly installed at the other end of the waste gas filtering cylinder through a flange, and a pretreatment module is installed on the side, close to the gas inlet pipe, in the waste gas filtering cylinder. An adsorption module is mounted on one side of the pretreatment module; a catalytic oxidation module is mounted on one side, close to the exhaust pipe, in the waste gas filter cartridge; a pretreatment channel is arranged on the pretreatment module, a gas distribution hopper is mounted in the pretreatment channel, and a bottom plate is arranged at the bottom of the gas distribution hopper. According to the waste gas filtration and purification modular assembly, through the arrangement of the pretreatment module, waste gas about to enter the adsorption module can be filtered, large-particle impurities are prevented from being directly sprayed on an activated carbon assembly in the adsorption module, and a series of conditions such as blockage of filter screen holes in activated carbon fibers are avoided.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment, specifically a modular component for waste gas filtration and purification. Background Technology

[0002] Currently, many plastic manufacturing, paint manufacturing, or other industries in China directly discharge waste gas from drying equipment, with annual emissions reaching millions or even tens of millions of tons, causing serious air pollution.

[0003] To address the aforementioned issues, a search revealed Chinese patent CN213221537U, which discloses a waste gas filtration and purification device. The device includes first opening the inlet fan 6, allowing waste gas to enter through the inlet fan 6, flow through the inlet channel 5 and the first flexible hose into the adsorption box 1, where activated carbon fibers adsorb the waste gas. The waste gas is then discharged through the exhaust channel 7 and the chimney 8. When the online detector detects that the waste gas emission concentration reaches the limit, the control component stops the inlet fan 6 from rotating and closes the first automatic valve 14, while simultaneously controlling the second automatic valve... When the 15 is turned on, the desorption fan 3 is turned on, and the exhaust gas flows from the adsorption box 1 into the inlet desorption pipe 9. The desorption heater 2 heats the gas, and at the same time, nitrogen flows from the nitrogen box 4 into the inlet desorption pipe 9. The nitrogen is heated into hot nitrogen to achieve desorption. Meanwhile, the gas containing organic solvent enters the condenser 11, and the temperature drops rapidly. The organic solvent liquefies and flows into the solvent storage tank. Under the action of gravity, the solvent in the upper layer enters the solvent storage tank, and the wastewater in the lower layer is treated as sewage. The gas discharged through the exhaust hole enters the adsorption box 1 through the pipe to achieve condensation and recovery.

[0004] Although the above-mentioned device can filter and purify exhaust gas, in actual use, there are many large particulate impurities in the exhaust gas that directly impact the activated carbon fiber, causing blockage of the filter mesh on the activated carbon fiber, reducing the amount of exhaust gas processed per unit time. At the same time, pressure buildup can easily occur inside the equipment, reducing its sealing performance. Utility Model Content

[0005] The purpose of this invention is to provide a modular component for exhaust gas filtration and purification to address the deficiencies mentioned in the background section.

[0006] To achieve the above objectives, a modular component for waste gas filtration and purification is provided, including a waste gas filter cartridge. One end of the waste gas filter cartridge is fixedly fitted with an inlet pipe via a flange, and the other end is fixedly fitted with an exhaust pipe via a flange. A pretreatment module is installed inside the waste gas filter cartridge near the inlet pipe, and an adsorption module is installed on one side of the pretreatment module. A catalytic oxidation module is installed inside the waste gas filter cartridge near the exhaust pipe. The pretreatment module has a pretreatment channel, and an air distribution hopper is installed inside the pretreatment channel. A bottom plate is provided at the bottom of the air distribution hopper, and a pre-filter plate is installed at the bottom of the air distribution hopper. An edge air distribution pipe and a middle air distribution pipe are respectively installed at the bottom of the air distribution hopper.

[0007] Preferably, the pretreatment module, adsorption module, and catalytic oxidation module are arranged in a horizontal linear pattern inside the exhaust gas filter cartridge. The pretreatment module, adsorption module, and catalytic oxidation module are all cylindrical in shape, and the axial cross-section of the pretreatment module, adsorption module, and catalytic oxidation module is concentric with that of the exhaust gas filter cartridge.

[0008] Preferably, two sets of positioning seats are evenly installed on the outer circumference of the pretreatment module, adsorption module and catalytic oxidation module, and positioning grooves are opened on both sides of the inner wall of the exhaust gas filter cartridge, with the dimensions of the positioning grooves and positioning seats being compatible.

[0009] Preferably, the pretreatment module, adsorption module, and catalytic oxidation module are positioned and installed inside the exhaust gas filter cartridge via positioning grooves and positioning seats. The pretreatment module, adsorption module, and catalytic oxidation module inside the exhaust gas filter cartridge are detachable structures. The pretreatment module, adsorption module, and catalytic oxidation module are interconnected.

[0010] Preferably, the pretreatment module includes a pretreatment channel, an air distribution hopper, docking blocks, docking grooves, a bottom plate, an edge air distribution pipe, a middle air distribution pipe, a support base, a stabilizing plate A, a stabilizing plate B, a pre-filter plate, support bars, and a pre-filter cylinder. Six sets of docking grooves are evenly distributed on the inner circumference of the pretreatment channel, and six sets of docking blocks are evenly installed on the outer circumference of the air distribution hopper. The dimensions of the docking blocks and docking grooves are matched, and the six sets of docking blocks are inserted into the six sets of docking grooves and fixed with bolts. The bottom of the pre-filter plate is supported by support bars, which are fixedly installed on the inner circumference of the pretreatment channel. A pre-filter cylinder is fixedly installed on the top of the pre-filter plate.

[0011] Preferably, a base plate is fixedly installed at the bottom of the air distribution hopper, and multiple sets of edge air distribution pipes and middle air distribution pipes are evenly inserted on the base plate; the edge air distribution pipes are arranged in an "S" shape, the middle air distribution pipes are arranged in a straight line, and the air outlets at the ends of the multiple sets of edge air distribution pipes and middle air distribution pipes are located directly above the pre-filter plate.

[0012] Preferably, a stabilizing disc A and a stabilizing disc B are fixedly installed on each of the multiple sets of edge air distribution pipes and the middle air distribution pipes. Both the stabilizing disc B and the stabilizing disc A are circular, and their axial cross-sections are concentric circles.

[0013] Preferably, three sets of equidistant support seats are installed between the stabilizing disk B and the stabilizing disk A. The bottom of the support seat is fixed to the surface of the stabilizing disk B, and the top of the support seat is fixed to the bottom of the stabilizing disk A. Six sets of fixing seats are evenly installed on the outer circumference of the stabilizing disk A, and an air distribution hopper is fixedly installed on the top of the fixing seat.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model features a detachable structure for the pretreatment module, adsorption module, and catalytic oxidation module inside the exhaust gas filter cartridge. This facilitates the disassembly and replacement of these modules for maintenance. The modular design allows maintenance personnel to focus on specific modules without needing to overhaul the entire complex system, reducing workload and difficulty, and thus lowering maintenance costs. Furthermore, when replacing modules, only the faulty part needs to be replaced, unlike traditional integrated structures which may require replacing the entire filter, saving on equipment replacement costs.

[0016] 2. This utility model, through the setting of a pretreatment module, can filter the waste gas about to enter the adsorption module, preventing large particles of impurities from being directly sprayed onto the activated carbon components inside the adsorption module, and avoiding blockage of the filter mesh on the activated carbon fibers. Multiple sets of edge and middle gas distribution pipes with their end outlets positioned directly above the pre-filter plate ensure uniform gas distribution. The annular arrangement of these edge and middle gas distribution pipes, with their end outlets directly above the pre-filter plate, ensures even distribution of waste gas on the plate, preventing localized waste gas concentration and guaranteeing uniform gas distribution across the entire pre-filter plate. This maximizes the filtering effect of the filter, improving filtration efficiency and effectiveness. Attached Figure Description

[0017] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0018] Figure 2 for Figure 1 A bottom view;

[0019] Figure 3 for Figure 1 A schematic diagram of a partial structure;

[0020] Figure 4 This is a schematic diagram of the preprocessing module of the present invention.

[0021] Figure 5 for Figure 4 A bottom view;

[0022] Figure 6 for Figure 4 Top view.

[0023] The diagram is labeled as follows: 1. Exhaust gas filter cartridge; 2. Inlet pipe; 3. Exhaust pipe; 4. Pretreatment module; 400. Pretreatment channel; 40. Air distribution hopper; 41. Docking block; 42. Docking groove; 43. Base plate; 44. Edge air distribution pipe; 45. Middle air distribution pipe; 46. Support base; 47. Stabilizing plate A; 471. Fixing base; 48. Stabilizing plate B; 49. Pre-filter plate; 491. Support bar; 492. Pre-filter cartridge; 5. Adsorption module; 6. Catalytic oxidation module; 7. Positioning base; 8. Positioning groove. Detailed Implementation

[0024] Please see Figure 1-6 This utility model provides a modular component for waste gas filtration and purification, including a waste gas filter cartridge 1. One end of the waste gas filter cartridge 1 is fixedly installed with an air inlet pipe 2 via a flange, and the other end of the waste gas filter cartridge 1 is fixedly installed with an exhaust pipe 3 via a flange. A pretreatment module 4 is installed inside the waste gas filter cartridge 1 near the air inlet pipe 2, and an adsorption module 5 is installed on one side of the pretreatment module 4. A catalytic oxidation module 6 is installed inside the waste gas filter cartridge 1 near the exhaust pipe 3. A pretreatment channel 400 is provided on the pretreatment module 4, and an air distribution hopper 40 is installed inside the pretreatment channel 400. A bottom plate 43 is provided at the bottom of the air distribution hopper 40, a pre-filter plate 49 is installed at the bottom of the air distribution hopper 40, and an edge air distribution pipe 44 and a middle air distribution pipe 45 are respectively installed at the bottom of the air distribution hopper 40.

[0025] Working Principle: In actual use, the pretreatment module 4, adsorption module 5, and catalytic oxidation module 6 are arranged horizontally and linearly inside the exhaust gas filter cartridge 1. Exhaust gas enters the exhaust gas filter cartridge 1 through the inlet pipe 2 and passes through the pretreatment module 4, adsorption module 5, and catalytic oxidation module 6 sequentially for purification before being discharged through the exhaust pipe 3. The pretreatment module 4, adsorption module 5, and catalytic oxidation module 6 work as follows: the pretreatment module 4 performs preliminary treatment of the exhaust gas, removing large particulate impurities to protect subsequent treatment modules and improve overall treatment efficiency; the adsorption module 5 is equipped with an activated carbon adsorption component, utilizing... The activated carbon adsorption module adsorbs pollutants in the exhaust gas, effectively removing low concentrations of organic waste gas and certain odorous substances. The catalytic oxidation module 6 contains a catalyst for catalytic treatment of the exhaust gas. The pretreatment module 4, adsorption module 5, and catalytic oxidation module 6 are detachable structures within the exhaust gas filter cartridge 1. This facilitates disassembly and replacement of these modules within the exhaust gas filter cartridge 1. Damaged or malfunctioning modules can be directly removed from the exhaust gas filter cartridge 1 for repair or replacement, eliminating the need for extensive disassembly and reassembly of the entire system, significantly reducing maintenance time and improving system performance. Efficiency; for example, if the adsorbent in adsorption module 5 reaches saturation, simply disassemble the module, replace the adsorbent, and reassemble it to restore normal system operation; with increasing environmental protection requirements or changes in waste gas composition, upgrades to the waste gas treatment system are necessary; modular installation allows for easy replacement of existing modules with newer, higher-performance modules, or the addition of new treatment modules, without significantly impacting other modules or the overall system structure; the combination of modules can be optimized and adjusted according to different waste gas treatment needs and operating conditions; for example, for certain waste gases containing specific pollutants, the number of pretreatment stages can be increased, or adjustments can be made... The order of the adsorption module 5 and the catalytic oxidation module is optimized for better treatment results. Because module disassembly and replacement are convenient, downtime during system maintenance and upgrades is minimal, reducing production stoppages and economic losses for the company. The modular design allows maintenance personnel to focus on specific modules without needing to overhaul the entire complex system, reducing workload and difficulty, and consequently lowering maintenance costs. Furthermore, when replacing modules, only the faulty part needs to be replaced, unlike traditional integrated structures which may require replacing the entire filtration unit, saving on equipment replacement costs.

[0026] The pretreatment module 4 filters the waste gas before it enters the adsorption module 5, preventing large particles from being directly sprayed onto the activated carbon components inside the adsorption module 5 and avoiding blockage of the filter mesh on the activated carbon fibers. The pretreatment module 4 operates as follows: waste gas enters the pretreatment channel 400 through the inlet pipe 2 and impacts the air distribution hopper 40. Multiple sets of edge air distribution pipes 44 and middle air distribution pipes 45 are evenly arranged at the bottom of the air distribution hopper 40 in a ring. The outlets at the ends of the edge air distribution pipes 44 and middle air distribution pipes 45 are located directly above the pre-filter plate 49, allowing for uniform air distribution on the pre-filter plate 49. The ring arrangement of the edge air distribution pipes 44 and middle air distribution pipes 45, with their outlets directly above the pre-filter plate, ensures that the waste gas is evenly distributed on the pre-filter plate 49, preventing blockage of the filter mesh. The system avoids concentrating waste gas in a localized area, ensuring uniform airflow across the entire pre-filter plate, maximizing the filtering effect of the filter, improving filtration efficiency and effectiveness, and extending the service life of the pre-filter plate. Waste gas first impacts the interior of the air distribution hopper 40, then exits through the distribution pipes. The combined structure of the air distribution hopper 40, edge distribution pipes 44, and central distribution pipes 45 is relatively compact, achieving complex air distribution functions within a limited pretreatment channel space. This efficient use of space allows for a more rational layout of the pretreatment module 4, facilitating the miniaturization and integration of the entire waste gas treatment equipment. Waste gas flows out from the distribution pipes at different locations, forming multiple streams of waste gas above the pre-filter plate 49. These streams experience some disturbance and mixing. This disturbance helps to further break down the agglomerates of pollutants in the waste gas, allowing the pollutants to be more evenly dispersed in the waste gas, thus facilitating subsequent contact with and adsorption / filtration by the pre-filter plate 49, improving the removal effect of pollutants in the waste gas.

[0027] In a preferred embodiment, the pretreatment module 4, adsorption module 5, and catalytic oxidation module 6 are arranged in a horizontal linear pattern inside the exhaust gas filter cartridge 1. The pretreatment module 4, adsorption module 5, and catalytic oxidation module 6 are all cylindrical in shape, and their axial cross-sections are concentric circles with those of the exhaust gas filter cartridge 1.

[0028] As a preferred implementation, two sets of positioning seats 7 are evenly installed on the outer circumference of the pretreatment module 4, the adsorption module 5 and the catalytic oxidation module 6, and positioning grooves 8 are opened on both sides of the inner wall of the exhaust gas filter cartridge 1. The dimensions of the positioning grooves 8 and the positioning seats 7 are compatible.

[0029] In a preferred embodiment, the pretreatment module 4, adsorption module 5, and catalytic oxidation module 6 are positioned and installed inside the exhaust gas filter cartridge 1 via positioning groove 8 and positioning seat 7. The pretreatment module 4, adsorption module 5, and catalytic oxidation module 6 are detachable structures inside the exhaust gas filter cartridge 1. The pretreatment module 4, adsorption module 5, and catalytic oxidation module 6 are interconnected.

[0030] In a preferred embodiment, the pretreatment module 4 includes a pretreatment channel 400, an air distribution hopper 40, docking blocks 41, docking grooves 42, a base plate 43, an edge air distribution pipe 44, a middle air distribution pipe 45, a support base 46, a stabilizing plate A 47, a stabilizing plate B 48, a pre-filter plate 49, a support bar 491, and a pre-filter cylinder 492. Six sets of docking grooves 42 are evenly distributed on the inner circumference of the pretreatment channel 400, and six sets of docking blocks 41 are evenly installed on the outer circumference of the air distribution hopper 40. The dimensions of the docking blocks 41 and the docking grooves 42 are compatible, and the six sets of docking blocks 41 are inserted into the six sets of docking grooves 42 and fixed with bolts. The bottom of the pre-filter plate 49 is supported by the support bar 491, which is fixedly installed on the inner circumference of the pretreatment channel 400. The top of the pre-filter plate 49 is fixedly installed with the pre-filter cylinder 492.

[0031] In a preferred embodiment, a base plate 43 is fixedly installed at the bottom of the air distribution hopper 40. Multiple sets of edge air distribution pipes 44 and middle air distribution pipes 45 are evenly inserted on the base plate 43. The edge air distribution pipes 44 are arranged in an "S" shape, and the middle air distribution pipes 45 are arranged in a straight line. The air outlets at the ends of the multiple sets of edge air distribution pipes 44 and middle air distribution pipes 45 are located directly above the pre-filter plate 49.

[0032] As a preferred embodiment, a stabilizing disk A47 and a stabilizing disk B48 are fixedly installed on each of the multiple sets of edge air distribution pipes 44 and middle air distribution pipes 45. Both the stabilizing disk B48 and the stabilizing disk A47 are circular, and their axial cross-sections are concentric circles.

[0033] In a preferred embodiment, three sets of equidistant support seats 46 are installed between the stabilizing disk B48 and the stabilizing disk A47. The bottom of the support seat 46 is fixed to the surface of the stabilizing disk B48, and the top of the support seat 46 is fixed to the bottom of the stabilizing disk A47. Six sets of fixing seats 471 are evenly installed on the outer circumference of the stabilizing disk A47, and an air distribution hopper 40 is fixedly installed on the top of the fixing seat 471.

[0034] Stabilizing discs A47 and B48 are fixedly installed on multiple sets of edge air distribution pipes 44 and middle air distribution pipes 45. The installation of stabilizing discs A47 and B48 can reinforce a large number of air distribution pipes, prevent shaking, and improve their stability during operation.

Claims

1. An exhaust gas filtering and purifying modular assembly comprising an exhaust gas filtering cartridge (1), characterized in that: One end of the exhaust filter cartridge (1) is fixedly installed with an air inlet pipe (2) through a flange, the other end of the exhaust filter cartridge (1) is fixedly installed with an air outlet pipe (3) through a flange, the inside of the exhaust filter cartridge (1) is installed with a pretreatment module (4) near the air inlet pipe (2), one side of the pretreatment module (4) is installed with an adsorption module (5), the inside of the exhaust filter cartridge (1) is installed with a catalytic oxidation module (6) near the air outlet pipe (3); The pretreatment module (4) is provided with a pretreatment channel (400), the inside of the pretreatment channel (400) is installed with a gas distribution hopper (40), the bottom of the gas distribution hopper (40) is provided with a bottom plate (43), the bottom of the gas distribution hopper (40) is installed with a pre-filter screen plate (49), and the bottom of the gas distribution hopper (40) is installed with an edge gas distribution pipe (44) and a middle gas distribution pipe (45) respectively.

2. A modular exhaust gas filtration and purification assembly according to claim 1, characterized in that: The pretreatment module (4), the adsorption module (5) and the catalytic oxidation module (6) are linearly distributed in the inside of the exhaust filter cartridge (1), the pretreatment module (4), the adsorption module (5) and the catalytic oxidation module (6) are all provided in a cylindrical shape, and the axial section of the pretreatment module (4), the adsorption module (5), the catalytic oxidation module (6) and the exhaust filter cartridge (1) is a concentric circle structure.

3. An exhaust gas filtering and purifying modular assembly according to claim 2, characterized in that: The circumferential outer wall of the pretreatment module (4), the adsorption module (5) and the catalytic oxidation module (6) is uniformly installed with two groups of positioning seats (7), the inner wall of the exhaust filter cartridge (1) is provided with positioning grooves (8) on both sides, and the size of the positioning grooves (8) and the positioning seats (7) is matched.

4. A modular exhaust gas filtration and purification assembly according to any one of claims 2 or 3, characterized in that: The pretreatment module (4), the adsorption module (5) and the catalytic oxidation module (6) are positioned and installed in the inside of the exhaust filter cartridge (1) through the positioning grooves (8) and the positioning seats (7), and the pretreatment module (4), the adsorption module (5) and the catalytic oxidation module (6) are detachable structures in the inside of the exhaust filter cartridge (1). The pretreatment module (4), the adsorption module (5) and the catalytic oxidation module (6) are connected.

5. A modular exhaust gas filtration and purification assembly according to claim 4, wherein: The pretreatment module (4) comprises a pretreatment channel (400), a gas distribution hopper (40), a butt joint block (41), a butt joint groove (42), a bottom plate (43), an edge gas distribution pipe (44), a middle gas distribution pipe (45), a support seat (46), a stabilizing disc A (47), a stabilizing disc B (48), a pre-filter screen plate (49), a support strip (491) and a pre-filter cartridge (492); Six groups of butt joint grooves (42) are uniformly formed in the circumferential inner wall of the pretreatment channel (400), six groups of butt joint blocks (41) are uniformly installed on the circumferential outer wall of the gas distribution hopper (40), the size of the butt joint blocks (41) and the butt joint grooves (42) is matched, the six groups of butt joint blocks (41) are inserted into the inside of the six groups of butt joint grooves (42) and are fixed through bolts; The pre-filter screen plate (49) is supported at the bottom through the support strip (491), the support strip (491) is fixedly arranged on the circumferential inner wall of the pretreatment channel (400), and the pre-filter screen plate (49) is fixedly provided with the pre-filter cartridge (492) at the top.

6. A modular exhaust gas filtration and purification assembly according to claim 5, wherein: The bottom of the air distribution hopper (40) is fixedly provided with a bottom plate (43), and a plurality of groups of edge air distribution pipes (44) and middle air distribution pipes (45) are uniformly inserted into the bottom plate (43); the edge air distribution pipes (44) are provided in an "S" shape, the middle air distribution pipes (45) are provided in a straight line shape, and end air outlets of the plurality of groups of edge air distribution pipes (44) and middle air distribution pipes (45) are arranged directly above a pre-filter screen plate (49).

7. A modular exhaust gas filtration and purification assembly according to claim 6, wherein: A plurality of groups of edge air distribution pipes (44) and middle air distribution pipes (45) are fixedly installed with a stabilizing disc A (47) and a stabilizing disc B (48), the stabilizing disc B (48) and the stabilizing disc A (47) are both provided in a circular shape, and axial sections of the stabilizing disc B (48) and the stabilizing disc A (47) are provided in a concentric circle structure.

8. A modular exhaust gas filtration and purification assembly according to claim 7, characterized in that: Three groups of equidistantly arranged support seats (46) are installed between the stabilizing disc B (48) and the stabilizing disc A (47), the support seats (46) are fixedly connected to a surface of the stabilizing disc B (48) at the bottom, the support seats (46) are fixedly connected to the bottom of the stabilizing disc A (47) at the top, six groups of fixing seats (471) are uniformly installed on a circumferential outer wall of the stabilizing disc A (47), and the fixing seats (471) are fixedly installed with the air distribution hopper (40) at the top.

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