Exhaust emission purification device for incinerator

Abstract

The invention provides an incinerator waste gas emission purification device, and particularly relates to the technical field of incineration waste gas purification equipment.The incinerator waste gas emission purification device comprises a supporting frame body and a spraying barrel fixedly installed on the supporting frame body, a conical confluence part is integrally formed at the bottom of the spraying barrel, and the incinerator waste gas emission purification device further comprises a center fixed shaft fixedly installed in the center of the interior of the spraying barrel; according to the incinerator waste gas emission purification device, through cooperative cooperation of the gas inlet guide assembly, the turbulent flow assembly, the spraying assembly and the intercepting assembly and combination of centralized supporting of the center fixed shaft, the waste gas emission purification effect is improved, and the waste gas emission purification effect is improved. The problems that an existing device is disordered in airflow and insufficient in gas-liquid contact are solved, tangential spiral air inlet, layered turbulent flow, precise spraying and water vapor interception are sequentially completed on waste gas, all links are closely connected, and therefore the integrity and stability of waste gas purification are improved, and it is guaranteed that purified gas reaches the standard and is discharged.

Description

Technical Field

[0001] This application provides a device for purifying exhaust gas from an incinerator, specifically relating to the technical field of incineration exhaust gas purification equipment. Background Technology

[0002] Incinerators are widely used in industrial production and waste treatment, but the combustion process produces waste gas containing pollutants such as particulate matter and harmful gases. Direct emission of this gas can cause serious air pollution, threatening ecological balance and human health. Therefore, efficient purification of incinerator waste gas is a crucial aspect of environmental governance. Currently, spray purification is a common method for treating incinerator waste gas. It involves atomizing a liquid containing purifying agents and then contacting it with the waste gas, using adsorption and chemical reactions to remove pollutants. This method is characterized by its ease of operation and wide applicability, and has become one of the mainstream technologies in the field of waste gas purification.

[0003] For example, the industrial incinerator waste gas treatment device disclosed in the invention patent with announcement number CN119139857B integrates functions such as spray washing, filter screen filtration, and activated carbon adsorption through a combination structure of an outer filter cylinder and a spray washing inner cylinder. Although it achieves multi-step treatment, it still has obvious defects. This device relies on the sliding adjustment of the guide frame and guide plate to switch the airflow path, without targeted optimization of the waste gas flow state, which leads to uneven distribution of waste gas in the treatment chamber; its spray structure only sprays in one direction through atomizing nozzles on the medium pipe, resulting in limited gas-liquid contact efficiency; it is difficult to solve the core problem of insufficient purification efficiency in existing technologies and cannot fully meet the high standards for waste gas purification in environmentally friendly industrial production. Summary of the Invention

[0004] In view of the deficiencies of the existing technology, this application provides a device for purifying exhaust gas from an incinerator, which can effectively solve the related technical problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] This application discloses a device for purifying exhaust gas from an incinerator, comprising a support frame and a spray cylinder fixedly mounted on the support frame. The bottom of the spray cylinder has an integrally formed conical confluence portion. The device further includes: a central axis fixedly mounted inside the center of the spray cylinder; a discharge pipe communicating with the top of the spray cylinder; an air inlet guide assembly disposed at the conical confluence portion, the air inlet guide assembly including a nozzle structure communicating with the conical confluence portion for feeding incinerator exhaust gas into the spray cylinder in a tangential spiral manner; a turbulence assemblies assembled around the central axis, the turbulence assemblies including a frame fixed on the central axis and turbulence plates distributed on the frame for turbulenting the spirally rising exhaust gas; a spray assembly fixed on the central axis and located above the turbulence assemblies for spraying a liquid containing purifying agents onto the turbulent exhaust gas; and a flow interception assembly disposed inside the spray cylinder and located above the spray assemblies for intercepting water vapor in the gas.

[0007] Preferably, the air intake guiding component includes an annular air intake pipe and several sets of obliquely arranged array air nozzles; the annular air intake pipe is fixed to the outside of the conical confluence, and the several sets of obliquely arranged array air nozzles are connected in an annular array to the top of the annular air intake pipe and extend into the conical confluence; the bottom of the annular air intake pipe is also connected in an annular array to several air intake valve pipes, which are used to connect with the exhaust gas pipe and are all equipped with valves; the inner wall of the spray cylinder near the conical confluence is provided with guide ribs corresponding to the positions of each set of obliquely arranged array air nozzles.

[0008] Preferably, each set of inclined array nozzles consists of several inclined nozzles, and the inclination direction of each nozzle is consistent with the direction of tangential spiral air intake of exhaust gas; each set of guide ribs consists of two spirally rising arc-shaped plates, which are distributed above the corresponding inclined array nozzles to form an airflow guiding channel.

[0009] Preferably, the frame of the spoiler assembly consists of at least three cross-shaped frames, each fixed to the outer periphery of a central axis and equidistantly distributed from top to bottom; the spoiler is an arc-shaped spoiler, with arc-shaped spoilers distributed at the bottom of each cross-shaped frame, and the arc-shaped spoilers on adjacent cross-shaped frames are staggered; an adjustment seat is also rotatably provided at the center of the bottom side of each cross-shaped frame.

[0010] Preferably, the spray assembly includes at least three annular spray pipes, a bidirectional nozzle group, and an external liquid inlet pipe; each annular spray pipe is fixed on a central axis and corresponds vertically to the cross-shaped frame of the turbulence assembly; the bidirectional nozzle group is arranged in annular arrays connected to the upper and lower sides of the annular spray pipes; one end of the external liquid inlet pipe is connected to the annular spray pipes and the other end extends to the outside of the spray cylinder, for connecting to an external pressurized pumping system to pump the liquid containing the purifying agent into each bidirectional nozzle group for atomization and spraying; the external liquid inlet pipe has a valve installed inside and the part passing through the spray cylinder is sealed.

[0011] Preferably, the bidirectional nozzle group consists of multiple array nozzle groups, each array nozzle group consisting of three atomizing nozzles arranged in an equilateral triangle.

[0012] Preferably, the flow-blocking assembly includes a ring body and flow-blocking plates; the ring body is fixed to the inner wall of the spray cylinder, and several flow-blocking plates are fixed at equal intervals on the inner side of the ring body, each flow-blocking plate being inclined and having a smooth surface.

[0013] Preferably, a rain cover is installed on the top of the discharge pipe, and an array of air holes is opened on the top of the spray cylinder, through which the spray cylinder is connected to the discharge pipe.

[0014] Preferably, a recovery drain pipe is connected to the bottom of the conical manifold. The recovery drain pipe is used to discharge the waste liquid collected by the conical manifold or send it into the recycling system, and a valve is installed inside the recovery drain pipe.

[0015] Preferably, the convex surface of the arc-shaped spoiler is oriented to match the tangential spiral direction of the exhaust gas guided by the intake guiding assembly.

[0016] In summary, the technical solution provided in this application has at least one of the following advantages compared with the prior art:

[0017] This incinerator exhaust gas purification device solves the problems of turbulent airflow and insufficient gas-liquid contact in existing devices by coordinating the air intake guiding component, turbulence turbulence component, spray component and interception component, combined with the centralized support of the central axis. It allows the exhaust gas to complete tangential spiral air intake, stratified turbulence, precise spraying and water vapor interception in sequence. The links are closely connected, thereby improving the overall quality and stability of exhaust gas purification and ensuring that the purified gas meets emission standards.

[0018] By using staggered arc-shaped baffles on the cross-shaped frame, with their convex surfaces adapted to the spiral direction of the exhaust gas, the baffle structure divides the airflow, making the gas-liquid mixture uniform. This allows for stratification and sufficient turbulence of the spiraling exhaust gas, extending the residence time of the exhaust gas in the cylinder and making the gas-liquid contact more uniform and sufficient.

[0019] By setting the annular spray pipe and the cross-shaped frame in a corresponding manner, and the atomizing nozzles distributed in a triangle on both sides of the bidirectional spray head group, the spray liquid covers the turbulent exhaust gas, and the bidirectional spray and spiral airflow form multidirectional contact, which improves the efficiency of pollutant capture and the efficiency of purification agent utilization.

[0020] By using the inclined and smooth-surfaced intercepting plates in the intercepting component, combined with the array of air holes at the top of the spray cylinder, water vapor and fine droplets in the gas are effectively intercepted. At the same time, the exhaust airflow is regulated to avoid secondary entrainment of droplets and ensure the dryness and cleanliness of the discharged gas.

[0021] By centrally collecting spray waste liquid through a conical manifold and exporting, recycling, or reusing the waste liquid through a recovery drain pipe, water resources and purification agents are reduced, and the operating cost of waste gas treatment is lowered, meeting the practical application needs of energy conservation and environmental protection. Attached Figure Description

[0022] Figure 1 This is a front-view stereoscopic structural diagram of this application;

[0023] Figure 2 This is a three-dimensional structural diagram from another perspective of this application;

[0024] Figure 3 This is a partial three-dimensional structural diagram of the internal components in this application;

[0025] Figure 4 This is a partial three-dimensional structural diagram of the relevant components at the air intake guide assembly in this application;

[0026] Figure 5 This is a partial top view of the relevant components at the air intake guide assembly in this application;

[0027] Figure 6 This is a partial three-dimensional structural diagram of the relevant components at the aerodynamic assembly in this application;

[0028] Figure 7 This is a partial bottom-view perspective view of the relevant components at the aerodynamic assembly in this application;

[0029] Figure 8 This is a partial top view of the relevant components at the aerodynamic assembly in this application;

[0030] Figure 9 This is a partial three-dimensional structural diagram of the relevant components of the spray assembly in this application;

[0031] Figure 10 This is a partial top view of the relevant components of the spray assembly in this application;

[0032] Figure 11 This is a partial three-dimensional structural diagram of the relevant components of the interception assembly at the discharge pipe in this application;

[0033] Figure 12 This is a partial three-dimensional structural diagram of the relevant components at the interception assembly in this application.

[0034] The labels in the diagram represent:

[0035] 1. Support frame; 11. Spray cylinder; 111. Conical manifold; 12. Discharge pipe; 121. Array of air holes; 13. Central axis;

[0036] Composite spray system:

[0037] 2. Intake guiding assembly; 21. Annular intake pipe; 22. Intake pipe with valve; 23. Angled array nozzle; 24. Guide rib plate assembly; 25. Recovery drain pipe;

[0038] 3. Spoiler assembly; 31. Cross-shaped frame; 32. Adjustment seat; 33. Arc-shaped spoiler;

[0039] 4. Spray assembly; 41. Annular spray pipe; 42. Bidirectional nozzle assembly; 43. External liquid inlet pipe;

[0040] 5. Flow-cutting component; 51. Ring body; 52. Flow-cutting plate. Detailed Implementation

[0041] The present application will be further described below with reference to the embodiments.

[0042] As an example of this application:

[0043] Reference Appendix Figures 1 to 12 As shown, this embodiment provides a device for purifying exhaust gas from an incinerator, including a support frame 1, a spray cylinder 11 fixedly installed on the support frame 1, a conical confluence portion 111 integrally formed at the bottom of the spray cylinder 11, a central fixed axis 13 fixedly installed inside the center of the spray cylinder 11, a discharge pipe 12 communicating with the top of the spray cylinder 11, an air intake guide assembly 2 disposed at the conical confluence portion 111, a turbulence 3 assembled on the outer periphery of the central fixed axis 13, a spray assembly 4 fixed on the central fixed axis 13 and located above the turbulence 3, and a flow interception assembly 5 disposed inside the spray cylinder 11 and located above the spray assembly 4.

[0044] The support frame 1 adopts a frame structure, and anti-slip pads or fixed feet can be installed at the bottom part in contact with the ground to ensure the overall stability of the device and adapt to installation scenarios with different ground flatness. The spray cylinder 11 is made of corrosion-resistant metal material, and its inner wall can be treated with anti-corrosion coating to resist the corrosion of acidic or alkaline substances that may be contained in the incinerator exhaust gas and extend the service life of the equipment.

[0045] The air intake guiding assembly 2 includes a nozzle structure connected to the conical confluence 111, used to send the incinerator exhaust gas into the spray cylinder 11 in a tangential spiral manner. Specifically, the nozzle structure includes an annular air intake pipe 21 and several sets of obliquely arranged array nozzles 23. The annular air intake pipe 21 is fixed to the outside of the conical confluence 111, and several sets of obliquely arranged array nozzles 23 are connected to the top of the annular air intake pipe 21 and extend into the conical confluence 111. Several air intake valve pipes 22 are also connected to the bottom of the annular air intake pipe 21 in an annular array. The air intake valve pipes 22 are used to connect with the exhaust gas pipeline and are all equipped with valves. The inner wall of the spray cylinder 11 near the conical confluence 111 is provided with a guide rib plate group 24 corresponding to the position of each set of obliquely arranged array nozzles 23. By setting multiple sets of air intake valve pipes 22, the number of air intake channels that can be opened can be flexibly controlled according to the exhaust gas emission of the incinerator, avoiding the problem of uneven airflow distribution caused by excessive air intake load in a single channel; the valves are made of corrosion-resistant materials and the connection between them and the air intake valve pipes 22 is sealed to prevent exhaust gas leakage.

[0046] Each set of inclined array nozzles 23 consists of several inclined nozzles, with the inclination direction of each nozzle aligned with the direction of tangential spiral air intake for exhaust gas. Each guide rib assembly 24 consists of two spirally rising arc-shaped plates, positioned diagonally above the corresponding inclined array nozzle 23 to form an airflow guiding channel. The inclination angle of the nozzles is pre-designed to ensure that the ejected exhaust gas forms a stable spiral upward airflow along the inner wall of the conical confluence section 111. The channel formed by the guide rib assembly 24 further regulates the airflow trajectory, preventing airflow divergence or turbulence during the upward process, thus laying the foundation for subsequent turbulence treatment.

[0047] The turbulence-disrupting assembly 3 includes a frame fixed on a central axis 13 and turbulence-disrupting plates distributed on the frame for turbulence-disrupting the spirally rising exhaust gas. The frame consists of at least three cross-shaped frames 31, each fixed on the outer periphery of the central axis 13 and distributed at equal intervals from top to bottom. The turbulence-disrupting plates are arc-shaped turbulence-disrupting plates 33, with arc-shaped turbulence-disrupting plates 33 distributed at the bottom of each cross-shaped frame 31, and the arc-shaped turbulence-disrupting plates 33 on two adjacent cross-shaped frames 31 are staggered. An adjustment seat 32 is also rotatably and adjustablely provided at the center of the bottom side of each cross-shaped frame 31. The cross-shaped frame 31 is detachably fixed to the central axis 13, which facilitates the subsequent maintenance or replacement of the turbulence component 3; the staggered arrangement of the arc-shaped turbulence vane 33 can fill the gap in the airflow channel between two adjacent frames, avoid short-circuiting of exhaust gas, and ensure that all exhaust gas can pass through sufficient turbulence; the adjustment seat 32 can be fixed by bolts or buckles, and rotating the adjustment seat 32 can finely adjust the tilt angle of the arc-shaped turbulence vane 33 to adapt to the airflow state under different working conditions.

[0048] The convex surface of the arc-shaped baffle 33 is aligned with the tangential spiral direction of the exhaust gas guided by the intake guide assembly 2. This structural design allows the exhaust gas to flow smoothly along the convex surface when it comes into contact with the arc-shaped baffle 33, further enhancing the spiral motion and avoiding energy loss caused by violent impact between the airflow and the baffle. At the same time, it improves the uniformity of gas-liquid contact.

[0049] The spray assembly 4 includes at least three annular spray pipes 41, a bidirectional nozzle group 42, and an external liquid inlet pipe 43. Each annular spray pipe 41 is fixed on the central fixed axis 13 and corresponds vertically to the cross-shaped frame 31 of the turbulence assembly 3. The bidirectional nozzle group 42 is arranged in annular array and connected to the upper and lower sides of the annular spray pipes 41. One end of the external liquid inlet pipe 43 is connected to the annular spray pipe 41, and the other end extends to the outside of the spray cylinder 11 for connecting to an external pressurized pumping system to pump the liquid containing the purification agent into each bidirectional nozzle group 42 for atomization and spraying. Note: The external pressurized pumping system can use existing technology. Generally, the pumping system includes: a container storing the liquid mixture of purification agent, a delivery pipe connected to the container, the end of the pipe connected to the water inlet of the pressurized pump, and the water outlet of the pressurized pump connected to the external liquid inlet pipe 43 through the pipe, thereby realizing continuous pressurized pumping of the liquid.

[0050] Specifically, the external liquid inlet pipe 43 has a valve installed inside and is sealed at the point where it passes through the spray cylinder 11. The annular spray pipe 41 corresponds vertically to the cross-shaped frame 31, allowing the spray liquid to effectively cover the turbulent exhaust gas area and improve gas-liquid contact efficiency. The sealing of the external liquid inlet pipe 43 uses a combination of sealing gaskets and welding to ensure that the spray liquid does not leak from the penetration point and to prevent external air from entering and affecting the internal airflow.

[0051] The bidirectional nozzle assembly 42 consists of multiple array nozzle groups, each of which comprises three atomizing nozzles arranged in an equilateral triangle. This equilateral triangular arrangement of atomizing nozzles creates a uniform spray coverage area, avoiding blind spots. Furthermore, the bidirectional spray design allows for simultaneous upward and downward spraying of the spray liquid, creating both counter-current and same-direction contact with the spiraling exhaust gas, further enhancing the purification effect.

[0052] The flow interception assembly 5 includes a ring 51 and flow interception plates 52. The ring 51 is fixed to the inner wall of the spray cylinder 11, and several flow interception plates 52 are equidistantly fixed to the inner side of the ring 51. Each flow interception plate 52 is inclined and has a smooth surface. Specifically, the preferred material for the flow interception plates 52 is a smooth, corrosion-resistant metal plate, such as stainless steel or corrosion-resistant and wear-resistant engineering plastic, which satisfies both the adaptability to working conditions and ensures the stable realization of the flow interception and water-saving function. The ring 51 is welded to the inner wall of the spray cylinder 11 to ensure structural strength. Specifically, after the gas is purified by spraying, it will carry a large number of atomized water vapor droplets upward. When the airflow passes through the flow interception assembly 5, it first comes into contact with the equidistantly distributed inclined flow interception plates 52. The tilt angle of the baffle plate 52 is adaptively designed so that it does not excessively obstruct airflow, while allowing the mist droplets entrained in the airflow to impact and adhere to the surface of the baffle plate under inertia. At the same time, the smooth surface of the baffle plate prevents the mist droplets from remaining and forming scale, allowing the attached mist droplets to quickly converge into fine droplets. Under the action of gravity, these droplets flow downwards along the tilt direction of the baffle plate and eventually fall into the conical confluence section 111 at the bottom of the spray cylinder 11.

[0053] A rain cover is installed on the top of the discharge pipe 12, and an array of air holes 121 are opened on the top of the spray cylinder 11. The spray cylinder 11 is connected to the discharge pipe 12 through the array of air holes 121. The rain cover adopts an arc-shaped structure, which can prevent rainwater from entering the discharge pipe 12 and affecting the operation of the equipment, and also reduce the resistance to the exhaust airflow. The array of air holes 121 can further regulate the exhaust airflow and avoid the problem of droplet entrainment caused by excessively fast local airflow velocity.

[0054] A recovery drain pipe 25 is connected to the bottom of the conical manifold 111. The recovery drain pipe 25 is used to discharge the waste liquid collected by the conical manifold 111 or send it into the recycling system, and a valve is installed inside the recovery drain pipe 25. The installation of the recovery drain pipe 25 realizes the recycling of the spray liquid, reduces the consumption of water resources and purification agents, and meets the requirements of energy conservation and environmental protection; the valve can control the discharge rate of the waste liquid, which is convenient to match the operating rhythm of the recycling system.

[0055] The working principle of this embodiment is as follows:

[0056] The incinerator exhaust gas enters the annular inlet pipe 21 through the inlet valve pipe 22, and after being sprayed out through the inclined array nozzles 23, it forms a tangential spiral upward airflow under the guidance of the guide rib plate group 24. During the upward airflow, it is turbulent by the arc-shaped turbulence plate 33 of the turbulence component 3, so that the airflow is evenly dispersed. At the same time, the external pressurized pumping system sends liquid containing purification agent into the annular spray pipe 41 through the external liquid inlet pipe 43, and sprays it out through the bidirectional nozzle group 42, which fully contacts the turbulent exhaust gas, adsorbs and reacts to remove pollutants in the exhaust gas. The purified gas continues to rise, and the intercepting plate 52 of the intercepting component 5 intercepts the entrained droplets, and finally discharges through the array air hole 121 and the discharge pipe 12. The sprayed waste liquid is collected in the conical confluence section 111, and discharged through the recovery discharge pipe 25 or sent to the recycling treatment system for reuse.

[0057] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. 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 of the technical features. These modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application. It should be understood that in this application, the rotating, sliding, meshing, belt-driven and other moving parts are well lubricated and not prone to slipping or wear, and each of them is provided with a corresponding protective shell. However, in the accompanying drawings of this application, the connection state of each moving part is not shown. It should also be understood that each part in this application is made of metal or plastic material with adaptable strength in the relevant field to ensure that its structural rigidity meets the actual requirements.

Claims

1. A device for purifying exhaust gas from an incinerator, comprising a support frame (1) and a spray cylinder (11) fixedly mounted on the support frame (1), wherein the bottom of the spray cylinder (11) is integrally formed with a conical confluence portion (111), characterized in that, Also includes: A central fixed axis (13) is fixedly installed inside the spray cylinder (11). Discharge pipe (12) connected to the top of the spray cylinder (11); An air intake guide assembly (2) is provided at the conical confluence (111). The air intake guide assembly (2) includes a nozzle structure connected to the conical confluence (111) for sending the incinerator exhaust gas into the spray cylinder (11) in a tangential spiral manner. A flow-dispersing assembly (3) is assembled on the outer periphery of the central fixed axis (13). The flow-dispersing assembly (3) includes a frame fixed on the central fixed axis (13) and flow-dispersing plates distributed on the frame, which are used to turbulent the spirally rising exhaust gas. The spray assembly (4), fixed on the central axis (13) and located above the turbulence assembly (3), is used to spray liquid containing purifying agent onto the turbulent exhaust gas; The intercepting component (5), located inside the spray cylinder (11) and above the spray assembly (4), is used to intercept water vapor in the gas.

2. The incinerator exhaust gas purification device according to claim 1, characterized in that, The air intake guide assembly (2) includes an annular air intake pipe (21) and several sets of oblique array air nozzles (23). The annular air intake pipe (21) is fixed on the outside of the conical manifold (111), and a number of oblique array nozzles (23) are connected to the top of the annular air intake pipe (21) and extend into the conical manifold (111). The bottom of the annular air intake pipe (21) is also connected to a number of air intake valve pipes (22) in an annular array. The air intake valve pipes (22) are used to connect with the exhaust gas pipe and are all equipped with valves inside. The inner wall of the spray cylinder (11) near the conical confluence part (111) is provided with a flow guide rib plate group (24) corresponding to the position of each group of inclined array air nozzles (23).

3. The incinerator exhaust gas purification device according to claim 2, characterized in that, Each of the inclined array nozzles (23) consists of several inclined nozzles, and the inclination direction of each nozzle is consistent with the direction of realizing the tangential spiral air intake of exhaust gas. Each of the aforementioned guide rib plate groups (24) consists of two spirally rising arc-shaped plates, which are distributed diagonally above the corresponding obliquely placed array nozzles (23) to form an airflow guiding channel.

4. The incinerator exhaust gas purification device according to claim 1, characterized in that, The frame of the turbulence component (3) consists of at least three cross-shaped frames (31), each cross-shaped frame (31) is fixed on the outer periphery of the central fixed axis (13) and is distributed at equal intervals from top to bottom; The spoiler is an arc-shaped spoiler (33). Each cross-shaped frame (31) has an arc-shaped spoiler (33) distributed at the bottom, and the arc-shaped spoilers (33) on two adjacent cross-shaped frames (31) are staggered. Each of the cross-shaped frames (31) is also provided with an adjustable seat (32) at the bottom center.

5. The incinerator exhaust gas purification device according to claim 1, characterized in that, The spray assembly (4) includes at least three annular spray pipes (41), a bidirectional nozzle group (42), and an external liquid inlet pipe (43). Each annular spray pipe (41) is fixed on the central fixed axis (13) and corresponds vertically to the cross-shaped frame (31) of the turbulence assembly (3). The bidirectional nozzle group (42) is connected to the upper and lower sides of the annular spray pipe (41) in an annular array. One end of the external liquid inlet pipe (43) is connected to the annular spray pipe (41), and the other end extends to the outside of the spray cylinder (11) for connecting to the external pressurized pumping system to pump the liquid containing the purification agent into each bidirectional nozzle group (42) for atomization and spraying. The external liquid inlet pipe (43) has a valve installed inside and the part passing through the spray cylinder (11) is sealed.

6. The incinerator exhaust gas purification device according to claim 5, characterized in that, The bidirectional nozzle group (42) consists of multiple array nozzle groups, each array nozzle group consisting of three atomizing nozzles distributed in an equilateral triangle.

7. The incinerator exhaust gas purification device according to claim 1, characterized in that, The flow-blocking component (5) includes a ring (51) and a flow-blocking plate (52); The ring (51) is fixed to the inner wall of the spray cylinder (11), and several intercepting plates (52) are fixed at equal intervals on the inner side of the ring (51). Each intercepting plate (52) is inclined and has a smooth surface.

8. The incinerator exhaust gas purification device according to claim 1, characterized in that, The top of the discharge pipe (12) is equipped with a rain cover, and the top of the spray cylinder (11) is provided with an array of air holes (121). The spray cylinder (11) is connected to the discharge pipe (12) through the array of air holes (121).

9. The incinerator exhaust gas purification device according to claim 1, characterized in that, The bottom of the conical manifold (111) is connected to a recovery drain pipe (25), which is used to discharge the waste liquid collected by the conical manifold (111) or send it into the recycling system. A valve is installed inside the recovery drain pipe (25).

10. The incinerator exhaust gas purification device according to claim 1, characterized in that, The convex surface of the arc-shaped baffle (33) is adapted to the tangential spiral direction of the exhaust gas guided by the intake guide assembly (2).

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