Environment-friendly ecological VOCs waste gas capturing and purifying system

Abstract

The environment-friendly ecological VOCs waste gas capturing and purifying system comprises a mounting frame, a waste gas pumping mechanism is fixed to the lower end of the mounting frame, a waste gas treatment mechanism is fixed to the upper end of the mounting frame, a waste gas collecting barrel is arranged on the left side of the waste gas pumping mechanism, and a coarse filtering mechanism is arranged between the waste gas collecting barrel and the waste gas pumping mechanism; through the mutual cooperation of the design of a negative plate and a positive plate in the waste gas treatment mechanism, the design of a vortex hole structure and the effect of ultrasonic waves, the VOCs waste gas can be efficiently purified. Through the design of the system, the VOCs waste gas can be efficiently captured, conveyed and purified, and the system has the advantages of energy conservation, environmental protection, safety and the like, is suitable for the field of waste gas treatment in industrial production, and has wide application prospects and market values.

Description

Technical Field

[0001] The present invention relates to the field of waste gas treatment, and in particular to an environmentally friendly ecological VOCs waste gas capture and purification system. Background Art

[0002] In modern industrial production, the emission of volatile organic compounds (VOCs) has become an important issue in the field of environmental protection. VOCs waste gas usually comes from industrial processes such as chemical, printing, coating, paint, and automobile manufacturing. The toxic and harmful components it contains have serious impacts on the environment and human health. Therefore, the effective capture and purification of VOCs waste gas has become an urgent need for current environmental protection work. At present, the treatment technologies for VOCs waste gas mainly include physical adsorption, chemical absorption, oxidative degradation and other methods. However, traditional treatment methods have problems such as high energy consumption, low treatment efficiency, and high operating costs, which make it difficult to meet environmental protection requirements and economic feasibility. Therefore, there is an urgent need for a new type of environmentally friendly ecological VOCs waste gas capture and purification system that can achieve efficient, energy-saving and environmentally friendly waste gas treatment.

[0003] There are some related technical solutions in this field, but there are still certain limitations. For example, the patent with publication number JP5790329B2 discloses a waste gas treatment device, which suppresses the generation of sediment in the cathode tank by designing the liquid stored in the cathode tank, and removes NOx from the waste gas at a low cost. However, it still has the following shortcomings: 1. Insufficient treatment efficiency: Affected by the surface area of ​​the electrode, it cannot provide sufficient reaction contact area, resulting in limited contact opportunities between the waste gas and the electrode, which limits the reaction. 2. Limited mass transfer: When the waste gas passes through the electrolytic cell, the mass transfer is limited due to the limited contact area between the waste gas and the electrode, which leads to low adsorption and reaction rate of VOCs molecules on the electrode surface, affecting the treatment efficiency. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies of the prior art, the present invention aims to provide an environmentally friendly ecological VOCs waste gas capture and purification system, which solves the problems existing in the prior art. 1. This patent adopts symmetrically arranged wing-shaped anode plates and cathode plates, and arranges vortex holes and ultrasonic generators in arrays on their surfaces. This design can effectively increase the surface area of ​​the electrode, provide more reaction contact area, enhance the contact between VOCs molecules in the exhaust gas and the electrode, thereby improving the treatment efficiency. 2. Through the setting of vortex holes and ultrasonic generators, the use of ultrasonic generators can promote the turbulence and rotation effects of the exhaust gas, enhance the contact and mixing efficiency between the exhaust gas and the electrode, optimize the mass transfer between the exhaust gas and the electrode, and increase the adsorption and reaction rate of VOCs molecules on the electrode surface, thereby enhancing the treatment efficiency.

[0005] (II) Technical solution To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an environmentally friendly ecological VOCs waste gas capture and purification system, comprising: a mounting frame, a waste gas pumping mechanism is fixed at the lower end of the mounting frame, a waste gas treatment mechanism is fixed at the upper end of the mounting frame, a waste gas collecting cylinder is arranged on the left side of the waste gas pumping mechanism, and a coarse filtering mechanism is arranged between the waste gas collecting cylinder and the waste gas pumping mechanism, which is used for preliminarily filtering large particulate matter, dust and other impurities in the waste gas.

[0006] The exhaust gas treatment mechanism comprises a shell, a reflux module is arranged through the middle of the shell, a plurality of cathode plates are fixed on the left side of the shell, a plurality of anode plates are fixed on the right side of the shell, the cathode plates and the anode plates are externally connected to a cathode power supply and an anode power supply respectively; an ultrasonic generator is arranged at the lower ends of the cathode plates and the anode plates; Preferably, the cathode plate and the anode plate are symmetrically arranged wing-shaped, wherein the electrode plate with an airfoil design provides a larger surface area, so that the effects of vortex holes and ultrasonic waves are more fully utilized, and the electrode plate with an airfoil design can form a complex flow path on the surface, so that the exhaust gas produces more complete mixing and convection on the electrode surface.

[0007] Preferably, the surface arrays of the cathode plate and the anode plate are provided with a plurality of penetrating vortex holes, and the outer edges of the lower ends of the vortex holes are provided with hemispherical grooves, wherein the penetrating design of the vortex holes enables the exhaust gas to pass through the electrode plates and form turbulence and eddy effects in the holes. The formation of turbulence and eddy currents in the vortex holes can promote the mixing and diffusion of exhaust gas molecules in the holes, which is used to accelerate the mass transfer rate between the exhaust gas molecules and the catalysts on the electrode surfaces, reduce the mass transfer resistance of the reactants, and thus increase the reaction rate.

[0008] Preferably, the reflow module includes a reflow pipe penetrating through the axis of the shell, and separation wings are symmetrically arranged on both sides of the reflow pipe. The separation wings are sealed and connected to the inner edge of the shell to guide the flow of exhaust gas and control its flow direction.

[0009] Preferably, an arc-shaped air inlet is provided at the lower right end of the return pipe. The arc-shaped design of the air inlet helps to smoothly guide the exhaust gas into the return pipe and avoid excessive diffusion and loss of the exhaust gas; a return inlet is provided on the right side of the upper end of the return pipe, and a return outlet is provided on the left side of the lower end of the return pipe.

[0010] Preferably, the surface of the air inlet is provided with a plurality of streamlined flow dividing strips for optimizing the flow of the exhaust gas, so that the exhaust gas can enter the recirculation pipe evenly and avoid the situation where the local flow velocity is too fast or too slow.

[0011] Preferably, an exhaust gas inlet is arranged at the bottom axis of the shell, and a gas outlet is arranged at the upper axis of the shell.

[0012] Preferably, the outer edges of the cathode plate and the anode plate are sealed to the inner edge of the shell.

[0013] Preferably, the lower end array of the shell is provided with reinforcing ribs, the bottom of the reinforcing ribs is provided with a water sealing ring, and the right side of the water sealing ring is provided with a water outlet valve.

[0014] (III) Beneficial effects The purpose of the present invention is to provide an environmentally friendly ecological VOCs waste gas capture and purification system, which makes it easier for VOCs molecules in the waste gas to be adsorbed and catalytically oxidized or reduced by the electrode surface through the design of the cathode plate and the anode plate, and the vortex hole structure and the action of ultrasound. The vortex hole structure provides more adsorption sites, and the action of ultrasound can promote mass transfer between the waste gas molecules and the electrode surface, accelerating the reaction rate. The local vibration and pressure waves of ultrasound can produce local temperature and pressure changes in the vortex hole area, optimize the reaction conditions between the waste gas and the electrode, and improve the selectivity of the reaction. This helps to reduce the occurrence of side reactions and improve the treatment effect and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the whole of the present invention.

[0016] Figure 2 It is a schematic diagram of the exhaust gas treatment mechanism in the present invention.

[0017] Figure 3 It is a cross-sectional view of the shell in the present invention.

[0018] Figure 4 It is a cross-sectional view of the whole of the present invention.

[0019] Figure 5 It is a schematic diagram of the reflux module in the present invention.

[0020] Figure 6 It is a cross-sectional view of the reflux pipe in the present invention.

[0021] Figure 7 Schematic diagram of the cathode plate in the present invention.

[0022] Figure 8 It is a cross-sectional view of the vortex hole in the present invention.

[0023] Fig. 9 It is the flow diagram of the gas in the present invention.

[0024] In the figure: 1-mounting frame, 2-exhaust gas pumping mechanism, 3-exhaust gas treatment mechanism, 4-exhaust gas collecting cylinder, 5-coarse filtering mechanism, 6-delivery pipeline, 31-shell, 32-reflux module, 33-cathode plate, 34-anode plate, 35-ultrasonic generator, 36-filter screen, 37-water outlet valve, 311-exhaust gas inlet, 312-gas outlet, 313-reinforcement rib, 314-sealing water ring, 321-reflux pipe, 322-partition wing, 331-vortex hole, 3211-air inlet, 3212-reflux inlet, 3213-reflux outlet, 3214-diverter strip, 3311-groove. DETAILED DESCRIPTION

[0025] The following will be combined with the attached examples of the present invention Figure 1-Figure 9 The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] The present invention provides a technical solution: an environmentally friendly ecological VOCs waste gas capture and purification system, comprising: a mounting frame 1, a waste gas pumping mechanism 2 is fixed at the lower end of the mounting frame 1, a waste gas treatment mechanism 3 is fixed at the upper end of the mounting frame 1, a waste gas collecting cylinder 4 is arranged on the left side of the waste gas pumping mechanism 2; a coarse filtering mechanism 5 is arranged between the waste gas collecting cylinder 4 and the waste gas pumping mechanism 2; a conveying pipeline 6 is fixed between the outlet of the waste gas pumping mechanism 2 and the waste gas treatment mechanism 3; The mounting frame 1 is the supporting structure of the entire system, which is used to fix and support the exhaust gas pumping mechanism and the exhaust gas treatment mechanism to ensure the stability and reliability of the system. The exhaust gas pumping mechanism 2 is located at the lower end of the mounting frame, and its main function is to extract the exhaust gas from the exhaust gas source and transport it to the exhaust gas treatment mechanism for subsequent purification. The exhaust gas treatment mechanism 3 is located at the upper end of the mounting frame, and is mainly responsible for purifying the collected exhaust gas, removing harmful substances therein, so that it meets environmental emission standards. The exhaust gas collection cylinder 4 is located on the left side of the exhaust gas pumping mechanism, and is used to collect the exhaust gas extracted from the exhaust gas source and introduce it into the exhaust gas pumping mechanism for transportation. The coarse filtering mechanism 5 is located between the exhaust gas collection cylinder and the exhaust gas pumping mechanism, and is mainly used to perform preliminary filtration on the collected exhaust gas, remove large particles and impurities therein, and protect the normal operation of subsequent equipment. The delivery pipeline 6 is located between the outlet of the exhaust gas pumping mechanism and the exhaust gas treatment mechanism, and is used to introduce the exhaust gas delivered from the exhaust gas pumping mechanism into the exhaust gas treatment mechanism for purification, ensuring that the exhaust gas can be smoothly processed subsequently.

[0027] The exhaust gas treatment mechanism includes: a shell 31, a reflux module 32 is provided through the middle of the shell 31, a plurality of cathode plates 33 are fixed on the left side of the shell 31, a plurality of anode plates 34 are fixed on the right side of the shell 31, an ultrasonic generator 35 is provided at the lower end of the cathode plate 33 and the anode plate 34, and a filter screen 36 is fixed at the upper end of the bottom of the shell 31. A reinforcing rib 313 is provided in an array at the lower end of the shell 31, a water sealing ring 314 is provided at the bottom of the reinforcing rib 313, and a water outlet valve 37 is provided on the right side of the water sealing ring 314.

[0028] The reflux module 32 is arranged in the middle of the shell body, and is used to control the flow direction of the exhaust gas, so that the exhaust gas can fully contact the anode plate and the cathode plate, thereby improving the treatment efficiency of the exhaust gas. The cathode plate 33 and the anode plate 34 are key components of the electrolysis reaction, which are responsible for catalytic oxidation or reduction of organic pollutants in the exhaust gas during the electrolysis process, and converting them into harmless products. The ultrasonic generator 35 can promote the mixing and mass transfer between the exhaust gas and the electrode plate by generating ultrasonic waves, improve the reaction rate and selectivity, and thus enhance the treatment efficiency of the exhaust gas. The filter screen 36 is located at the upper end of the bottom of the shell body, and is used to preliminarily filter large particles, dust and other impurities in the exhaust gas, protect the internal components from damage, and ensure the stability and safety of the exhaust gas treatment. The reinforcing rib 313 and the water sealing ring 314 are located at the lower end of the shell body, and are used to strengthen the structural strength of the shell body, prevent wastewater leakage, and keep the treatment process dry and clean. The water outlet valve 7 is located on the right side of the water sealing ring at the lower end of the shell body, and is used to discharge the wastewater generated during the treatment process, ensure that the wastewater is discharged in time, and maintain the normal operation of the equipment.

[0029] An exhaust gas inlet 311 is provided at the bottom axis of the shell 31, and a gas outlet 312 is provided at the upper axis of the shell 31. An exhaust gas inlet 311 is provided at the bottom axis of the shell 31 to guide the gas containing VOCs exhaust gas into the interior of the treatment device. When the exhaust gas enters the interior of the device through the inlet 311, it is processed and converted by various components inside the treatment device. The treated gas is then discharged through the gas outlet 312 provided at the upper axis of the shell 1. The function of the gas outlet 312 is to discharge the treated gas out of the device so that the treated gas can be safely released into the environment while ensuring the normal operation of the treatment device.

[0030] The reflux module 32 includes a reflux pipe 321 that is arranged at the axis of the shell 1, and partition wings 322 are symmetrically arranged on both sides of the reflux pipe 321, and the partition wings 322 are sealed and connected to the inner edge of the shell 31. The reflux module 32 includes a reflux pipe 321 and partition wings 322. The reflux pipe 321 is arranged at the axis of the shell 31, and is used to guide the flow of exhaust gas and control its flow direction. The partition wings 322 are symmetrically arranged on both sides of the reflux pipe 321, and the function of these partition wings 322 is to play a role in diversion and diversion during the flow of exhaust gas, so that the exhaust gas can flow evenly to the anode plate and the cathode plate, thereby improving the contact efficiency between the exhaust gas and the electrode. The partition wings 322 are sealed and connected to the inner edge of the shell 31 to ensure that the exhaust gas will not leak into the external environment during the flow process, and maintain the closedness and safety of the treatment process.

[0031] It should be noted that the reflux module 32 is made of insulating material as a whole to ensure that the electrolysis reaction will not be affected during the exhaust gas treatment process. This design can effectively prevent current leakage or short circuit during the electrolysis process and ensure the stable progress of the electrolysis reaction. In addition, circuit pipes are provided in the partition wings 322 on both sides of the reflux module 32 to connect the circuits of the cathode plate 33 and the anode plate 34. These circuit pipes play a role in conducting current, ensuring that the cathode plate and the anode plate can receive current normally, thereby realizing the electrolysis reaction. Such a design not only ensures the safety and stability of the device, but also improves the efficiency and reliability of the electrolysis reaction.

[0032] An arc-shaped air inlet 3211 is provided at the lower right end of the return pipe 321, a return inlet 3212 is provided at the right side of the upper end of the return pipe 321, and a return outlet 3213 is provided at the left side of the lower end of the return pipe 321. The air inlet 3211 is located at the lower right end of the return pipe 321, and is used to guide the exhaust gas from the bottom into the interior of the return pipe 321. The arc-shaped design of the air inlet 3211 helps to smoothly guide the exhaust gas into the return pipe and avoid excessive diffusion and loss of the exhaust gas. The return inlet 3212 is located at the right side of the upper end of the return pipe 321, and is used to guide the treated exhaust gas to flow back into the interior of the exhaust gas treatment device. Through the return inlet 3212, the exhaust gas can enter the treatment device again for secondary treatment to ensure that the organic pollutants in the exhaust gas are thoroughly treated. The return outlet 3213 is located at the left side of the lower end of the return pipe 321, and is used to discharge the treated wastewater. Wastewater generated during the treatment process is discharged from the reflux outlet 3213 to avoid excessive accumulation of wastewater in the treatment device and maintain the normal operation of the device. The design of multiple streamlined diverter strips 3214 on the surface of the air inlet 3211 helps to optimize the flow of exhaust gas, so that the exhaust gas can enter the reflux pipe 321 evenly and avoid the situation where the local flow rate is too fast or too slow. These streamlined diverter strips 3214 can cause the exhaust gas to produce a diversion effect in the process of entering the reflux pipe, making the exhaust gas flow more uniform, reducing turbulence and eddy currents in the flow process, thereby reducing the energy loss and pressure loss of the exhaust gas. Such a design can improve the flow efficiency of the exhaust gas in the reflux pipe and increase the contact area between the exhaust gas and the electrode, thereby improving the treatment efficiency and reaction selectivity of the exhaust gas.

[0033] The cathode plate 33 and the anode plate 34 are symmetrically arranged wing-shaped, and a plurality of penetrating vortex holes 331 are arranged in an array on their surface. A hemispherical groove 3311 is arranged on the outer edge of the lower end of the vortex hole 331. The design of the hemispherical groove 3311 can further increase the contact area between the exhaust gas and the surface around the vortex hole.

[0034] The wing-shaped setting has the following functions: 1. Increasing the reaction surface area: The electrode plate with wing-shaped design provides a larger surface area, so that the effects of vortex holes and ultrasonic waves can be more fully utilized. This can further increase the contact area between the exhaust gas and the electrode, enhance the mass transfer between the VOCs molecules in the exhaust gas and the electrode, and improve the reaction efficiency. 2. Optimizing reaction kinetics: The electrode plate with wing-shaped design can form a complex flow path on the surface, so that the exhaust gas produces more complete mixing and convection on the electrode surface. This helps to optimize the reaction kinetics, accelerate the mass transfer and reaction rate between the VOCs molecules in the exhaust gas and the electrode surface, and improve the selectivity of the reaction.

[0035] The vortex hole 331 plays a key role in the electrolytic treatment system. The following is a detailed description of the role of the vortex hole: 1. Increase the contact area: The through-hole design of the vortex hole enables the exhaust gas to pass through the electrode plate and form turbulence and eddy effects in the hole. Such a design increases the contact area between the exhaust gas and the electrode surface, promotes the contact between the exhaust gas molecules and the catalyst on the electrode surface, and thus improves the reaction efficiency. 2. Enhance the mass transfer effect: The formation of turbulence and eddy currents in the vortex hole promotes the mixing and diffusion of the exhaust gas molecules in the hole, and accelerates the mass transfer rate between the exhaust gas molecules and the catalyst on the electrode surface. This effect of accelerating mass transfer helps to reduce the mass transfer resistance of the reactants, thereby increasing the reaction rate. 3. Optimize the reaction conditions: The design of the vortex hole can improve the reaction environment, making the flow of the exhaust gas molecules in the hole more uniform and stable. By forming turbulence and eddy effects, the vortex hole can optimize the reaction conditions and improve the selectivity and efficiency of the reaction. 4. Promote the mixing of exhaust gas: The through-hole design of the vortex hole can effectively guide the exhaust gas molecules to the vicinity of the electrode surface and form a mixing effect in the hole. Such a mixing effect helps to fully expose the organic pollutants in the exhaust gas to the action of the catalyst on the electrode surface, thereby achieving efficient conversion of the organic pollutants.

[0036] The combined effect of wing-shaped electrode plates, eddy current holes and ultrasonic waves: 1. Enhance the turbulence of exhaust gas: The effect of ultrasound can generate local high-frequency vibration around the vortex hole, thereby accelerating the flow of exhaust gas and enhancing the turbulence effect. This vibration and turbulence effect can effectively expose the organic pollutants in the exhaust gas to the electrode surface around the vortex hole, thereby improving the contact efficiency between the organic matter and the electrode surface.

[0037] 2. Promote mass transfer: Ultrasonic vibration can break the boundary layer around the exhaust gas molecules and accelerate the mass transfer process. When the exhaust gas molecules pass through the vortex holes, the vibration of the ultrasound can accelerate the mass transfer between the exhaust gas molecules and the catalyst on the electrode surface, thereby speeding up the reaction rate.

[0038] 3. Improve reaction efficiency: The vibration of ultrasound can eliminate bubbles and foam in the exhaust gas, prevent them from clogging the vortex holes, and more effectively transport organic pollutants in the exhaust gas to the electrode surface. This helps to improve the efficiency and selectivity of the reaction and promote the rapid conversion of organic matter in the exhaust gas.

[0039] 4. Optimize reaction conditions: Ultrasonic vibration can form local high-pressure and low-pressure areas around the vortex holes, thereby optimizing the conditions of the electrolytic reaction. This optimization effect helps to improve the stability and controllability of the reaction, thereby achieving efficient treatment of exhaust gas.

[0040] Overall, the wing-shaped design combined with the penetrating vortex holes and hemispherical grooves can maximize the contact area between the exhaust gas and the electrode, optimize the mixing and diffusion effects of the exhaust gas during the electrolysis process, and improve the exhaust gas treatment efficiency and reaction selectivity.

[0041] The working principle of the present invention can be specifically divided into the following stages: 1. Preparation stage: Before the treatment begins, the anode plate 34 and the cathode plate 33 are connected to the anode power supply and the cathode power supply respectively. These power supplies provide the required current to provide energy for the electrolysis reaction. After that, the VOCs-containing waste gas discharged from the factory is first connected to the waste gas collection cylinder 4 through multiple pipes, and is initially filtered through the coarse filtering mechanism 5 to remove large particles and impurities such as dust. After that, the waste gas to be treated is passed into the waste gas treatment mechanism 3 through the waste gas pumping mechanism 2; 2. Oxidation reaction stage: The exhaust gas enters the reflow module 32 from the exhaust gas inlet 311 at the lower end of the shell 31, and is diverted into the right side of the shell 31 through the air inlet. Subsequently, the exhaust gas passes through the anode plate 34, and an oxidation reaction occurs on the surface of the fin design, oxidizing the VOCs exhaust gas into harmless products such as water and carbon dioxide.

[0042] When the exhaust gas reaches the vortex hole of the anode plate 34, the ultrasonic generator 35 generates ultrasonic waves which are transmitted to the exhaust gas through the vortex hole 331, promoting the turbulence and rotation effect of the exhaust gas and increasing the contact and mixing efficiency with the anode plate 34. At the same time, the friction and vibration generated by the ultrasonic wave on the shape structure of the vortex hole 331 can cause the local temperature to rise, which helps to optimize the catalytic reaction conditions.

[0043] 3. Water discharge: The water produced in the oxidation reaction stage is isolated by the water sealing ring 314 and discharged from the system through the water outlet valve 37.

[0044] 4. Reduction reaction stage: The exhaust gas after the oxidation reaction flows back to the bottom of the left side of the shell 1 through the reflux pipe 321, and gradually rises to enter the cathode plate 33 area for reduction reaction. In this stage, the oxidation products (such as aldehydes, ketones, acids and esters) in the exhaust gas are reduced to more stable, non-toxic or easy-to-handle compounds.

[0045] 5. Gas emission: After two reaction stages, the waste gas flows upward and is finally discharged out of the system through the gas outlet 312.

[0046] In summary, the present invention realizes efficient treatment of VOCs waste gas through reasonable design and technical application, and has the advantages of high treatment efficiency, simple operation and high safety.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly ecological VOCs waste gas capture and purification system, comprising: A mounting frame (1), wherein an exhaust gas pumping mechanism (2) is fixed at the lower end of the mounting frame (1), characterized in that an exhaust gas treatment mechanism (3) is fixed at the upper end of the mounting frame (1), and an exhaust gas collecting cylinder (4) is arranged on the left side of the exhaust gas pumping mechanism (2); The exhaust gas treatment mechanism (3) comprises a shell (31), a reflux module (32) is provided through the middle of the shell (31), a plurality of cathode plates (33) are fixed on the left side of the interior of the shell (31), a plurality of anode plates (34) are fixed on the right side of the interior of the shell (31), and an ultrasonic generator (35) is provided at the lower ends of the cathode plates (33) and the anode plates (34); The cathode plate (33) and the anode plate (34) are symmetrically arranged in the shape of fins, and a plurality of penetrating vortex holes (331) are arranged in array on their surfaces, and a hemispherical groove (3311) is arranged on the outer edge of the lower end of the vortex hole (331).

2. The environmentally friendly ecological VOCs waste gas capture and purification system according to claim 1 is characterized in that: The reflux module (32) comprises a reflux pipe (321) penetrating the axis of the shell (31), with partition wings (322) symmetrically arranged on both sides of the reflux pipe (321), and the partition wings (322) are sealedly connected to the inner edge of the shell (31).

3. The environmentally friendly ecological VOCs waste gas capture and purification system according to claim 2 is characterized in that: The lower right end of the return pipe (321) is provided with an arc-shaped air inlet (3211), the upper right end of the return pipe (321) is provided with a return inlet (3212), and the lower left end of the return pipe (321) is provided with a return outlet (3213).

4. The environmentally friendly ecological VOCs waste gas capture and purification system according to claim 3 is characterized in that: The surface of the air inlet (3211) is provided with a plurality of streamlined flow dividing strips (3214).

5. The environmentally friendly ecological VOCs waste gas capture and purification system according to claim 1 is characterized in that: An exhaust gas inlet (311) is provided at the axis center of the bottom of the shell (31), and a gas outlet (312) is provided at the axis center of the upper end of the shell (31).

6. The environmentally friendly ecological VOCs waste gas capture and purification system according to claim 1 is characterized in that: The outer edges of the cathode plate (33) and the anode plate (34) are sealed to the inner edge of the shell (31).

7. The environmentally friendly ecological VOCs waste gas capture and purification system according to claim 1 is characterized in that: The lower end of the shell (31) is provided with reinforcing ribs (313) in array, the bottom of the reinforcing ribs (313) is provided with a water sealing ring (314), and the right side of the water sealing ring (314) is provided with a water outlet valve (37).

8. The environmentally friendly ecological VOCs waste gas capture and purification system according to claim 1 is characterized in that: A coarse filtering mechanism (5) is provided between the exhaust gas collecting cylinder (4) and the exhaust gas pumping mechanism (2).

9. The environmentally friendly ecological VOCs waste gas capture and purification system according to claim 8 is characterized in that: The right side outlet of the coarse filtering mechanism (5) is in continuous communication with the inlet of the exhaust gas pumping mechanism (2).

10. The environmentally friendly ecological VOCs waste gas capture and purification system according to claim 1, characterized in that: A delivery pipeline (6) is fixed between the outlet of the exhaust gas pumping mechanism (2) and the exhaust gas treatment mechanism (3).

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