Waste gas treatment device and purification system

Abstract

The utility model relates to the technical field of waste gas purification, in particular to a waste gas treatment device and a purification system.The waste gas treatment device comprises a gas treatment part and a gas uniformizing part, the gas treatment part is provided with a gas treatment channel extending in the first direction, and the two ends, in the first direction, of the gas treatment channel are provided with a gas inlet and a gas outlet correspondingly. The gas treatment part further comprises an ozone inlet part communicated with the gas treatment channel, the gas uniformizing part is fixedly arranged in the gas treatment channel, and the gas uniformizing part is arranged between the gas inlet and the ozone inlet part. The gas uniformizing part comprises at least one spiral gas guide plate, so that to-be-treated gas flow entering the gas treatment channel from the gas inlet rotates. According to the waste gas treatment device and the purification system provided by the invention, ozone and to-be-treated waste gas are more sufficiently mixed. The reaction efficiency is improved, and the purification effect is improved.

Description

Technical Field

[0001] This application relates to the field of waste gas purification technology, and in particular to a waste gas treatment device and purification system. Background Technology

[0002] With the acceleration of industrialization, the emission of volatile organic compounds (VOCs) has become a significant source of environmental pollution. Traditional waste gas treatment methods have revealed numerous problems when facing increasingly stringent environmental standards. For example, some simple adsorption methods are insufficient to completely remove the various complex components in waste gas, and the adsorption materials are easily saturated, requiring frequent replacement and incurring high costs. While combustion methods can decompose VOCs to some extent, the high-temperature conditions not only consume a lot of energy but may also generate secondary pollution. Furthermore, some waste gas treatment devices are poorly designed in terms of gas mixing and distribution, resulting in low treatment efficiency and failing to meet the demand for efficient purification of large quantities of waste gas in industrial production. Therefore, the development of a highly efficient, energy-saving device that can achieve thorough mixing and treatment of waste gas is urgently needed. Utility Model Content

[0003] The purpose of this application is to provide a waste gas treatment device and purification system to solve, to a certain extent, the technical problem that some existing waste gas treatment devices have poor design in terms of gas mixing and distribution, resulting in low treatment efficiency and difficulty in meeting the demand for efficient purification of large amounts of waste gas in industrial production.

[0004] According to a first aspect of this application, an exhaust gas treatment device is provided, including a gas treatment section and a gas equalization section. The gas treatment section has a gas treatment channel extending along a first direction, and an air inlet and an exhaust outlet are respectively provided at both ends of the gas treatment channel in the first direction.

[0005] The gas treatment unit further includes an ozone inlet unit that communicates with the gas treatment channel. The gas equalization unit is fixedly disposed in the gas treatment channel and is disposed between the air inlet and the ozone inlet unit.

[0006] The gas equalization section includes at least one spiral air guide plate to rotate the gas flow to be processed that enters the gas processing channel through the air inlet.

[0007] Preferably, the ozone inlet is located on the side of the gas treatment channel near the inlet.

[0008] Preferably, it further includes a reduced diameter section disposed within the gas treatment channel, the reduced diameter section being disposed between the ozone inlet and the exhaust port;

[0009] The reduced diameter portion and the exhaust port are spaced apart in the first direction.

[0010] Preferably, the reduced diameter section includes a tapered section, a straight section, and an increasing section connected sequentially along the first direction. The inner diameter of the straight section is smaller than the inner diameter of the gas processing channel. The ends of the tapered section away from the straight section and the ends of the increasing section away from the straight section are both connected to the inner wall of the gas processing channel, so that the two ends of the straight section smoothly transition to the inner wall of the gas processing channel.

[0011] Preferably, the spiral air guide plate is provided with a first air vent, which penetrates the spiral air guide plate in a direction perpendicular to the spiral air guide plate.

[0012] Preferably, it further includes a support portion, through which the gas equalization portion is fixed within the gas processing channel.

[0013] Preferably, the support portion includes:

[0014] A support shaft extends along the first direction, the axis of the support shaft coincides with the center line of the gas processing channel, and the spiral guide plate is fixed on the support shaft;

[0015] A support rib is provided at the air inlet, connecting the inner wall of the gas processing channel and the end of the support shaft where the air inlet is located;

[0016] A ventilated plate is provided on the exhaust port. The ventilated plate is provided with a second vent hole that penetrates the ventilated plate along the first direction. The end of the support shaft where the exhaust port is located passes through the ventilated plate.

[0017] Preferably, the gas treatment unit includes a cylindrical body, a first flange, and a second flange. The cylindrical body extends along the first direction, the gas treatment channel is disposed on the cylindrical body, and the first flange and the second flange are fixedly disposed at both ends of the cylindrical body in the first direction.

[0018] According to a second aspect of this application, a purification system is provided, including the waste gas treatment device described in any of the above technical solutions, and thus has all the beneficial technical effects of the waste gas treatment device, which will not be repeated here.

[0019] Preferably, the system also includes an ozone generator, which is connected to the ozone inlet.

[0020] Compared with the prior art, the beneficial effects of this application are as follows:

[0021] The waste gas treatment device provided in this application uses a spiral air guide plate in the gas distribution section to rotate the airflow of the waste gas (i.e., VOCs gas). When the rotating airflow passes through the ozone inlet section, the rotating airflow can carry ozone along with it, allowing the ozone to fully contact and react with the waste gas at the beginning of the gas treatment channel. This results in a more thorough mixing of ozone and waste gas. This rotating airflow increases the contact opportunities between gas molecules, greatly improving the reaction efficiency. Compared with traditional straight-cylinder gas channels, it effectively increases the reaction rate of the waste gas, enabling pollutants in the waste gas to undergo oxidation reactions with ozone more quickly, thereby improving the purification effect.

[0022] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is an isometric structural schematic diagram of the waste gas treatment device provided in the embodiments of this application;

[0025] Figure 2 This is a side view of the waste gas treatment device provided in the embodiments of this application;

[0026] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure obtained by cutting the provided waste gas treatment device along the AA direction;

[0027] Figure 4 This is a schematic diagram of the internal structure of the waste gas treatment device provided in the embodiments of this application.

[0028] Figure label:

[0029] 10-Gas processing channel; 11-Cylinder body; 12-First flange; 13-Second flange; 2-Gas equalization section; 21-Spiral air guide plate; 210-First vent hole; 31-Support shaft; 32-Support rib; 33-Ventilation plate; 331-Second vent hole; 4-Reduced diameter section; 41-Straight section; 42-Gradual narrowing section; 43-Gradual increasing section; 5-Ozone inlet section.

[0030] F1 - First direction; F2 - Second direction; F3 - Third direction. Detailed Implementation

[0031] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0032] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0033] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] The following reference Figures 1 to 4 This application describes an exhaust gas treatment apparatus and purification system according to some embodiments.

[0037] See Figures 1 to 4As shown, an embodiment of the first aspect of this application provides a waste gas treatment device, which includes a gas treatment section and a gas equalization section 2. The gas treatment section has a gas treatment channel 10 extending along a first direction F1, and an air inlet and an exhaust outlet are respectively provided at both ends of the gas treatment channel 10 in the first direction F1. The gas treatment section also includes an ozone inlet section 5 communicating with the gas treatment channel 10. The gas equalization section 2 is fixedly disposed within the gas treatment channel 10, and is disposed between the air inlet and the ozone inlet section 5. The gas equalization section 2 includes at least one spiral air guide plate 21 to rotate the gas flow to be treated entering the gas treatment channel 10 from the air inlet.

[0038] According to the exhaust gas treatment device provided by the above-mentioned technical features, the spiral air guide plate 21 of the gas equalization section 2 causes the airflow of the exhaust gas (i.e., VOCs gas) to be treated to rotate. When the rotating airflow passes through the ozone inlet section 5, the rotating airflow can carry ozone along with it, allowing the ozone to fully contact and react with the gas to be treated at the beginning stage of the gas treatment channel 10. This results in a more thorough mixing of ozone and the exhaust gas. This rotating airflow increases the contact opportunities between gas molecules, greatly improving the reaction efficiency. Compared with the traditional straight-cylinder gas channel, it effectively increases the reaction rate of the exhaust gas, allowing the pollutants in the exhaust gas to react with ozone more quickly, thereby improving the purification effect.

[0039] like Figure 2 and Figure 3 As shown in the figure, F1 can be an example of the first direction F1 mentioned above. For ease of description, two directions that are perpendicular to each other on the plane perpendicular to the first direction F1 are defined as the second direction F2 and the third direction F3, respectively. F2 shown in the figure can be an example of the second direction F2 mentioned above, and F3 shown in the figure can be an example of the third direction F3 mentioned above.

[0040] like Figure 1 and Figure 4 As shown in the figure, an example of the gas equalization section 2 including two spiral air guide plates 21 is shown. The two spiral air guide plates 21 can be spirally arranged with the center line of the gas processing channel 10 as the axis.

[0041] However, it is not limited to this. The gas equalization section 2 is not limited to the example of the two spiral air guide plates 21. As long as the gas to be processed entering the gas processing channel 10 from the air inlet can be rotated, the gas equalization section 2 can also be other examples. For example, the gas equalization section 2 can also be a spiral air guide plate 21, which can be a spiral blade arranged spirally along the first direction F1 with the center line of the gas processing channel 10 as the axis (similar to the spiral blade structure shown in Chinese Patent Document CN104956792A). For another example, the gas equalization section 2 can also include multiple spiral air guide plates 21, which can be a spiral blade structure arranged around the center line of the gas processing channel 10 (similar to the turbine blade shown in Chinese Patent Document CN214170625U, the fan blade shown in Chinese Patent Document CN1590778A, and other spiral blade structures).

[0042] Preferably, such as Figure 1 and Figure 4 As shown, the spiral air guide plate 21 can be provided with a first vent 210. The first vent 210 penetrates the spiral air guide plate 21 in a direction perpendicular to the spiral air guide plate 21. This not only ensures the air passage rate of the gas equalization section 2, thereby reducing the influence of the gas equalization section 2 on the flow rate of the gas to be processed, but also ensures the ability of the first vent 210 to change the flow direction of the gas to be processed entering the gas processing channel 10 from the air inlet. In other words, after the gas to be processed passes through the air inlet and the first vent 210 in sequence, its flow direction will move along the penetration direction of the first vent 210. Compared with the initial gas flow entering the air inlet along the first direction F1, its flow direction changes, thereby realizing the rotation and turbulence of the gas flow.

[0043] Preferably, such as Figure 4 As shown, the first vent 210 is fully distributed on the spiral air guide plate 21 to further improve the air passage rate of the uniform air section 2.

[0044] like Figure 3 and Figure 4 As shown in the figure, an example is shown in which only one gas equalization section 2 is provided between the air inlet and the ozone inlet section 5. However, it is not limited to this. The number of gas equalization sections 2 can be adaptively adjusted according to the distance between the air inlet and the ozone inlet section 5 and the size of the gas equalization section 2. For example, the number of gas equalization sections 2 provided between the air inlet and the ozone inlet section 5 can be 2, 3, 4 or more.

[0045] Preferably, such as Figure 1 , Figure 3 and Figure 4 As shown, the above-mentioned waste gas treatment device may also include a support part, and the above-mentioned gas equalization part 2 may be fixed in the gas treatment channel 10 via the support part to achieve this.

[0046] Preferably, such as Figure 1 , Figure 2 and Figure 4 As shown, the support portion may include a support shaft 31, which extends along the first direction F1. The axis of the support shaft 31 may coincide with the center line of the gas processing channel 10. The spiral air guide plate 21 is fixed on the support shaft 31 to ensure the uniformity of the distribution of the spiral air guide plate 21 along the circumferential direction of the gas processing channel 10, ensuring that the airflow can flow uniformly along the first direction F1, reducing the probability of the airflow impacting the inner wall of the gas processing channel 10, and reducing the loss of airflow power.

[0047] Preferably, such as Figure 1 , Figure 3 and Figure 4 As shown, the above-mentioned support part may also include a support rib 32, which can be disposed at the air inlet. The support rib 32 connects the inner wall of the gas processing channel 10 and the end where the air inlet of the support shaft 31 is located, so as to fix the end where the air inlet of the support shaft 31 is located.

[0048] Preferably, such as Figure 1 and Figure 4 As shown, there are multiple support ribs 32, which are spaced apart along the circumferential direction of the support shaft 31. This not only ensures the fixed stability of the support shaft 31, but also reduces the obstruction of the air inlet by the support ribs, thus ensuring the air intake volume of the air inlet.

[0049] Preferably, such as Figures 2 to 4 As shown, the above-mentioned support may also include a vent plate 33, which can cover the exhaust port. The end of the support shaft 31 where the exhaust port is located passes through the vent plate 33 to fix the end of the support shaft 31 where the exhaust port is located.

[0050] Preferably, such as Figure 2 and Figure 4 As shown, the above-mentioned vent plate 33 may be provided with a second vent hole 331 that penetrates the vent plate 33 along the first direction F1. In this way, the airflow rotating in the gas processing channel 10 can be stabilized by the guiding effect of the second vent hole 331 of the vent plate 33, so that the airflow through the second vent hole 331 can resume straight flow along the first direction F1, which facilitates the transfer of the gas to be processed to the subsequent process.

[0051] Optionally, the outer edge of the aforementioned vent plate 33 may be welded and fixed to the cylinder body 11 described below.

[0052] However, this is not the only limitation. As long as the gas equalization part 2 can be fixedly installed within the gas processing channel 10, the support part is not limited to the example where the support rib 32 and the vent plate 33 are respectively supported at both ends of the support shaft 31. For example, as not shown in the figure, the support part can also be a fixing structure such as a claw or welding claw fixed to the inner wall of the gas processing channel.

[0053] In an embodiment, such as Figure 3 As shown, the ozone inlet 5 is located on the side of the gas treatment channel 10 near the inlet. This allows for a longer transmission distance between the ozone inlet 5 and the exhaust port. On one hand, this provides the gas treatment channel 10 with a larger mixing space and time for both ozone and the gas to be treated, further improving the mixing adequacy of the two gases. On the other hand, this longer transmission distance allows for greater dissipation of the rotational kinetic energy of the airflow within the gas treatment channel 10, enabling the airflow exiting the exhaust port to flow in a straight line along the first direction F1, facilitating the transfer of the gas to be treated to subsequent processes.

[0054] Furthermore, such as Figure 3 As shown, the above-mentioned waste gas treatment device may further include a narrowing section 4 disposed within the gas treatment channel 10, which is located between the ozone inlet 5 and the exhaust port. The narrowing section 4 and the exhaust port are spaced apart in the first direction F1. Thus, by compressing the exhaust area within the gas treatment channel 10 through the narrowing section 4, the flow velocity of the airflow within the gas treatment channel 10 increases as it passes through the narrowing section 4. This allows the rotational kinetic energy of the airflow within the gas treatment channel 10 to be consumed more quickly within the narrowing section 4, causing the airflow to stop rotating (i.e., flow in a straight line along the first direction F1). Furthermore, by passing through the gap between the narrowing section 4 and the exhaust port, the airflow velocity is reduced, allowing the airflow velocity to return to normal, facilitating the smooth transmission of the gas to be treated to subsequent processes.

[0055] Preferably, such as Figure 3As shown, the aforementioned narrowing section 4 may include a tapered section 42, a straight section 41, and an increasing section 43 connected sequentially along the first direction F1. The inner diameter of the straight section 41 is smaller than the inner diameter of the gas processing channel 10. The ends of the tapered section 42 and the increasing section 43 that are furthest from the straight section 41 are connected to the inner wall of the gas processing channel 10, allowing a smooth transition between the two ends of the straight section 41 and the inner wall of the gas processing channel 10. Thus, the presence of the tapered section 42 allows the gas flow velocity to gradually increase when entering the narrowing section 4, while the increasing section 43 causes the gas flow velocity to gradually decrease when leaving the narrowing section 4, returning to a near-original velocity. This smooth transition design reduces gas resistance and turbulence during flow, allowing the gas to pass through the narrowing section 4 more smoothly, thereby improving gas processing efficiency. The smooth transition design helps reduce vibration and noise caused by unstable gas flow, making the equipment operation more stable and reliable, and reducing the adverse effects of vibration and noise on the equipment structure and the surrounding environment. Furthermore, the structure in which the tapered section 42, the straight section 41, and the increasing section 43 are connected in sequence and smoothly transition is relatively easy to realize in processing and manufacturing. It does not require complex processes and special processing equipment, which reduces manufacturing costs and also helps to ensure product quality and precision.

[0056] In an embodiment, preferably, such as Figures 1 to 3 As shown, the gas treatment unit may include a cylinder body 11, a first flange 12 and a second flange 13. The cylinder body 11 extends along a first direction F1, and a gas treatment channel 10 is disposed on the cylinder body 11. The first flange 12 and the second flange 13 are fixedly disposed at both ends of the cylinder body 11 in the first direction F1, so as to facilitate the connection between the exhaust gas treatment device and upstream devices (e.g., exhaust gas generating devices) and downstream devices (e.g., other exhaust gas treatment devices).

[0057] like Figures 1 to 3 As shown in the figure, the above-mentioned cylindrical body 11 is an example of a cylinder extending along the first direction F1. However, it is not limited to this. As long as it is convenient to generate rotating airflow, the above-mentioned cylindrical body 11 is not limited to the above-mentioned cylindrical example. For example, the cylindrical body 11 can also be a cylindrical structure with a cylindrical inner wall and an outer wall of other shapes (such as rectangles, triangular prisms, or other irregular columnar shapes).

[0058] The second aspect of this application also provides a purification system, including the waste gas treatment device described in any of the above embodiments, and thus has all the beneficial technical effects of the waste gas treatment device, which will not be repeated here.

[0059] Preferably, not shown in the figure, the purification system may further include an ozone generator, which can be connected to the ozone inlet 5 to provide ozone to the waste gas treatment device, so as to ensure the ozone concentration and quality of the waste gas treatment device, and further improve the mixing efficiency and quality of the gas to be treated and ozone in the waste gas treatment device.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A waste gas treatment device, characterized in that, It includes a gas processing unit and a gas equalization unit. The gas processing unit has a gas processing channel extending along a first direction. An air inlet and an air outlet are respectively provided at both ends of the gas processing channel in the first direction. The gas treatment unit further includes an ozone inlet unit that communicates with the gas treatment channel. The gas equalization unit is fixedly disposed in the gas treatment channel and is disposed between the air inlet and the ozone inlet unit. The gas equalization section includes at least one spiral air guide plate to rotate the gas flow to be processed that enters the gas processing channel through the air inlet.

2. The waste gas treatment device according to claim 1, characterized in that, The ozone intake section is located on the side of the gas treatment channel near the air inlet.

3. The waste gas treatment device according to claim 1, characterized in that, It also includes a diameter reduction section disposed within the gas processing channel, the diameter reduction section being disposed between the ozone inlet and the exhaust port; The reduced diameter portion and the exhaust port are spaced apart in the first direction.

4. The waste gas treatment device according to claim 3, characterized in that, The reduced diameter section includes a tapered section, a straight section, and an increasing section connected sequentially along the first direction. The inner diameter of the straight section is smaller than the inner diameter of the gas processing channel. The ends of the tapered section and the increasing section that are away from the straight section are both connected to the inner wall of the gas processing channel, so that the two ends of the straight section smoothly transition to the inner wall of the gas processing channel.

5. The waste gas treatment device according to claim 1, characterized in that, The spiral air guide plate is provided with a first air vent, which penetrates the spiral air guide plate in a direction perpendicular to the spiral air guide plate.

6. The waste gas treatment apparatus according to any one of claims 1 to 5, characterized in that, It also includes a support portion, through which the gas equalization portion is fixed within the gas processing channel.

7. The waste gas treatment device according to claim 6, characterized in that, The support portion includes: A support shaft extends along the first direction, the axis of the support shaft coincides with the center line of the gas processing channel, and the spiral guide plate is fixed on the support shaft; A support rib is provided at the air inlet, connecting the inner wall of the gas processing channel and the end of the support shaft where the air inlet is located; A ventilated plate is provided on the exhaust port. The ventilated plate is provided with a second vent hole that penetrates the ventilated plate along the first direction. The end of the support shaft where the exhaust port is located passes through the ventilated plate.

8. The waste gas treatment device according to claim 1, characterized in that, The gas processing unit includes a cylindrical body, a first flange, and a second flange. The cylindrical body extends along the first direction, and the gas processing channel is disposed on the cylindrical body. The first flange and the second flange are fixedly disposed at both ends of the cylindrical body in the first direction.

9. A purification system, characterized in that, The waste gas treatment device includes any one of claims 1 to 8.

10. The purification system according to claim 9, characterized in that, It also includes an ozone generator, which is connected to the ozone inlet.

Images