A device for desulfurization, denitration and dust removal of a heat supply chain grate boiler

Abstract

The application provides a heat chain boiler desulfurization and denitrification dust removal ultra-low emission device, and relates to the technical field of water turbine boiler desulfurization and denitrification. The device comprises a filter tank, a gas mixing assembly is fixedly connected in the filter tank, a spraying assembly is arranged in the bottom end of the filter tank, the spraying assembly comprises a reflux column fixedly connected to the bottom end of the filter tank, the top end of the reflux column is fixedly connected with an inner side ring, the outer side of the reflux column is fixedly connected with a water pump one, and the output end of the water pump one is fixedly connected with an output tank. Through the multi-stage processing technology, the waste gas is fully contacted and reacted with the desulfurization and denitrification agent, the pollutants such as sulfur dioxide, nitrogen oxides and dust are effectively removed, the consumption of water resources and reagents is reduced, the operation cost is reduced, the waste gas is uniformly diffused through the air inlet pipe and the air outlet hole, is reversely contacted with the liquid curtain after being pre-wetted by the water return net, and is treated by the shunt column for secondary spraying, so that the gas-liquid contact time is prolonged, and the dust removal efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of desulfurization and denitrification technology for water turbine boilers, and in particular to an ultra-low emission device for desulfurization, denitrification, and dust removal in a heating chain grate boiler. Background Technology

[0002] A desulfurization, denitrification, and dust removal emission device for heating chain grate boilers is a device used to reduce the emission of harmful gases and dust pollutants generated during the combustion process of heating chain grate boilers. This device typically integrates multiple treatment technologies to ensure that the emitted exhaust gases meet environmental standards.

[0003] Traditional boiler desulfurization and denitrification devices, due to their use of single-spray or fixed atomization structures, suffer from problems such as insufficient contact area between the agent and the exhaust gas, and uneven droplet size leading to short reaction time. As a result, unreacted desulfurizing and denitrifying agents are directly discharged with high-concentration waste liquid, which not only increases the cost of treating one ton of steam, but also causes secondary pollution such as excessive water hardness and ammonia escape.

[0004] Therefore, in response to the above problems, a desulfurization, denitrification, dust removal, and ultra-low emission device for heating chain boilers is proposed. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an ultra-low emission device for desulfurization, denitrification and dust removal of heating chain grate boilers, including a filter tank, wherein a gas mixing component is fixedly connected inside the filter tank;

[0006] Spraying assembly; the spraying assembly is located at the bottom of the filter tank. The spraying assembly includes a return column fixedly connected to the bottom of the filter tank. An inner ring is fixedly connected to the top of the return column. A water pump is fixedly connected to the outer side of the return column. An output tank is fixedly connected to the output end of the water pump. A liquid distribution pipe is fixedly connected to the end of the output tank away from the water pump. A water outlet is fixedly connected to the inner side of the liquid distribution pipe. A guide pipe is fixedly connected to the end of the water outlet away from the liquid distribution pipe. A dispersion frame is fixedly connected to the bottom of the guide pipe. A water control assembly is fixedly connected to the outer side of the spraying assembly.

[0007] A dispersion component is placed inside a filter tank. The dispersion component includes an air inlet pipe fixedly connected inside the filter tank, an air duct fixedly connected to one end of the air inlet pipe, an air outlet at the bottom end of the air duct, a water return mesh fixedly connected to the top end of the air duct, a wind baffle fixedly connected to the top end of the inner ring, an air outlet pipe fixedly connected to the top end of the wind baffle, and a flow divider fixedly connected inside the dispersion component.

[0008] Preferably, a positioning frame is fixedly connected to the outside of the liquid distribution pipe, and the end of the positioning frame away from the liquid distribution pipe is fixedly connected to the filter tank, and the outside of the dispersion frame is fixedly connected to the air outlet pipe.

[0009] Preferably, the return water mesh and the windbreak frame are symmetrically designed and both are conical. The bottom end of the air intake column is fixedly connected to the inner ring. The outer side of the air outlet pipe passes through the filter tank and extends outward. The outer side of the return water mesh is fixedly connected to the inner wall of the inner ring.

[0010] Preferably, the diversion assembly includes a diversion column fixedly connected inside the air outlet duct, a water spray ring fixedly connected inside the diversion column, a water guide frame fixedly connected to the top of the diversion column, and a return water column fixedly connected inside the water guide frame.

[0011] Preferably, a water tank is fixedly connected to the top of the filter tank, a second water pump is fixedly connected to the top of the filter tank, the output end of the second water pump is fixedly connected to the spray ring, the input end of the second water pump is fixedly connected to the water tank, and the bottom end of the return water column is fixedly connected to the top of the water tank.

[0012] Preferably, the gas mixing assembly includes an ozone tube fixedly connected inside the filter canister, one end of the ozone tube being fixedly connected to a gas distribution pipe, the outer bottom end of the gas distribution pipe being fixedly connected to a gas guide pipe, and the outer side of the gas guide pipe being fixedly connected to the inside of the windshield frame.

[0013] Preferably, the water control assembly includes a bottom guide water pipe fixedly connected to the outside of the return column, an electronic switch valve fixedly connected to the outside of the bottom guide water pipe, a mounting bracket fixedly connected to the outside of the electronic switch valve, and the mounting bracket fixedly connected to the outside of the filter tank.

[0014] Preferably, a receiving frame is fixedly connected to the bottom end of the reflux column, a switch door is installed on the outside of the filter tank, and the outside of the water pump is installed on the top of the receiving frame.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0016] 1. Through the linkage design of the reflux column and spraying components, the water pump 1 pumps the bottom liquid to the output tank, and then distributes it evenly to the water outlet and guide pipe through the liquid distribution pipe. Finally, a uniform liquid curtain is formed by the dispersion frame, and the unreacted liquid is recycled through the reflux column. With this design, the exhaust gas and desulfurization and denitrification agent fully contact and react through a multi-stage treatment process, effectively removing pollutants such as sulfur dioxide, nitrogen oxides and dust, reducing water resources and reagent consumption, and lowering operating costs.

[0017] 2. The design adopts a conical symmetrical design of the air intake column and the wind deflector frame. After the exhaust gas enters through the air intake pipe, it is evenly diffused through the air outlet. After being pre-wetted by the return water network, it comes into counter-current contact with the liquid curtain and is then treated by secondary spraying through the diversion column. With this design, the multi-stage dispersion prolongs the gas-liquid contact time, improves the dust removal efficiency, and thus greatly improves the desulfurization efficiency.

[0018] 3. The temperature of the liquid at different levels is collected in real time through the bottom guide water pipe. The electronic switch valve automatically adjusts the return flow according to the temperature difference. Combined with the heat exchange between the water tank and the return water column, temperature balance is achieved. With this design, the temperature fluctuation of the liquid is greatly reduced, avoiding the failure of the agent caused by local overheating. This improves the stability of the reaction efficiency and effectively solves the problem of reduced agent activity caused by temperature stratification in traditional systems. Attached Figure Description

[0019] Figure 1 A perspective view of an ultra-low emission device for desulfurization, denitrification, and dust removal in a heating chain boiler provided by the present invention;

[0020] Figure 2 Rear view of a desulfurization, denitrification, dust removal, and ultra-low emission device for a heating chain grate boiler provided by the present invention;

[0021] Figure 3 A schematic diagram of the internal structure of the filter tank of an ultra-low emission device for desulfurization, denitrification, and dust removal in a heating chain boiler provided by the present invention;

[0022] Figure 4 A schematic diagram of the dispersed component structure of a desulfurization, denitrification, dust removal, and ultra-low emission device for a heating chain boiler provided by the present invention;

[0023] Figure 5 A schematic diagram of the spraying component structure of an ultra-low emission device for desulfurization, denitrification, and dust removal in a heating chain boiler provided by the present invention;

[0024] Figure 6 A schematic diagram of the water control component structure of an ultra-low emission device for desulfurization, denitrification, and dust removal in a heating chain boiler provided by the present invention;

[0025] Figure 7 A schematic diagram of the gas mixing component structure of an ultra-low emission device for desulfurization, denitrification, and dust removal in a heating chain boiler provided by the present invention;

[0026] Figure 8 A schematic diagram of the diversion component structure of an ultra-low emission device for desulfurization, denitrification, and dust removal in a heating chain boiler provided by the present invention;

[0027] Figure 9 This invention provides a schematic diagram of the return water column structure of a desulfurization, denitrification, dust removal, and ultra-low emission device for a heating chain boiler.

[0028] 1. Filter tank;

[0029] 2. Spraying assembly; 21. Return column; 22. Inner ring; 23. Water pump one; 24. Output tank; 25. Liquid distribution pipe; 26. Water outlet; 27. Guide pipe; 28. Dispersion frame; 29. ​​Positioning frame;

[0030] 3. Dispersion components; 31. Air inlet pipe; 32. Air intake column; 33. Air outlet; 34. Water return mesh; 35. Wind baffle frame; 36. Air outlet pipe;

[0031] 4. Diversion assembly; 41. Diversion column; 42. Sprinkler ring; 43. Water intake frame; 44. Return water column; 45. Water tank; 46. Water pump II;

[0032] 5. Gas mixing assembly; 51. Ozone tube; 52. Gas distribution pipe; 53. Gas delivery pipe;

[0033] 6. Water control components; 61. Bottom water guide pipe; 62. Electronic switch valve; 63. Mounting bracket;

[0034] 7. Shelf; 8. Door panel. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figure 1 and Figure 4 As shown, this embodiment provides a technical solution: an ultra-low emission device for desulfurization, denitrification and dust removal of a heating chain boiler, including a filter tank 1, a receiving frame 7 fixedly connected to the bottom end of the return column 21, and a switch door 8 installed on the outside of the filter tank 1.

[0037] The filter tank 1 serves as the main reaction vessel for the entire desulfurization, denitrification, and dust removal device, accommodating various reaction components and gas flow channels. It provides a space for desulfurization, denitrification, and dust removal reactions. The reflux column 21 connects the spraying component 2 to the bottom of the filter tank 1, enabling liquid circulation and reflux. It guides the reacted liquid back to the bottom of the filter tank 1 for further treatment or discharge, promoting liquid recycling, improving the utilization rate of desulfurization and denitrification agents, and reducing waste. The housing frame 7 provides stable support and installation foundation for the spraying components 2, such as the water pump 23, ensuring the stability of the equipment during operation, improving the reliability and safety of the equipment, and extending the service life of the equipment. The switch door 8 facilitates the operation of personnel to inspect, maintain, and clean the inside of the filter tank 1, while keeping it closed during normal operation to prevent gas leakage.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 ,and Figure 9As shown, spraying assembly 2 is located at the bottom of the filter tank 1. Spraying assembly 2 includes a return column 21 fixedly connected to the bottom of the filter tank 1. An inner ring 22 is fixedly connected to the top of the return column 21. A water pump 23 is fixedly connected to the outside of the return column 21. The outside of the water pump 23 is mounted on the top of the housing frame 7. An output tank 24 is fixedly connected to the output end of the water pump 23. A liquid distribution pipe 25 is fixedly connected to the end of the output tank 24 away from the water pump 23. An outlet head 26 is fixedly connected to the inside of the liquid distribution pipe 25. A guide pipe 27 is fixedly connected to the end of the outlet head 26 away from the liquid distribution pipe 25. A dispersion frame 28 is fixedly connected to the bottom of the guide pipe 27. A positioning frame 29 is fixedly connected to the outside of the liquid distribution pipe 25. The end of the positioning frame 29 away from the liquid distribution pipe 25 is fixedly connected to the filter tank 1.The reflux column 21, serving as a key connection and reflux structure for the spraying assembly 2, is fixed at the bottom of the filter tank 1, connecting upwards to components such as the inner ring 22. Simultaneously, a water pump 23 is mounted on its outer side, forming a liquid circulation loop to ensure continuous desulfurization and denitrification reactions, achieving liquid recycling, improving reaction efficiency, reducing reagent waste, and lowering operating costs. The inner ring 22, located at the top of the reflux column 21, works in conjunction with components such as the wind baffle 35 to guide airflow, ensuring orderly flow of exhaust gas within the filter tank 1, full contact with the sprayed desulfurization and denitrification agents, optimizing airflow distribution, improving reaction uniformity, enhancing desulfurization and denitrification effects, and reducing pollutant emissions. The water pump 23 is installed within the container... At the top of frame 7, power is provided for liquid transport. Liquid is drawn from the bottom of return column 21 and transported via output tank 24, liquid diversion pipe 25, and other components to the spraying position inside filter tank 1. This stabilizes the liquid supply, improves spray uniformity, enhances reaction effect, and ensures continuous equipment operation. Output tank 24 is connected to the output end of water pump 23, temporarily storing the transported liquid and providing a stable liquid source for liquid diversion pipe 25. This balances liquid pressure, ensures normal operation of spraying components 2, stabilizes spray pressure, improves spray effect, reduces the impact of pressure fluctuations on equipment, and extends equipment lifespan. Liquid diversion pipe 25 diverts the liquid from output tank 24. Multiple water outlets 26 ensure uniform liquid distribution, expand the spray coverage area, guarantee sufficient contact between waste gas and desulfurization / denitrification agent, improve liquid dispersion, enhance reaction effect, reduce pollutant emissions, and increase equipment processing capacity. The water outlets 26, acting as liquid spray outlets, spray the liquid in a mist or fine stream form, increasing the contact area between the liquid and waste gas, promoting the desulfurization and denitrification reaction, increasing the reaction rate, improving treatment effect, reducing emission concentration, and enhancing the environmental performance of the equipment. The guide pipe 27 connects the water outlets 26 and the dispersion frame 28, guiding the sprayed liquid towards the dispersion frame 28 to further optimize liquid distribution, ensure sufficient waste gas treatment, enhance liquid distribution uniformity, and improve... To improve reaction efficiency, reduce equipment resistance, and ensure smooth airflow, the dispersion frame 28 is fixed on the outlet pipe 36, receives the liquid transported by the guide pipe 27, and evenly disperses it into the filter tank 1 to form a liquid curtain or mist droplets. This allows for thorough mixing and reaction with the exhaust gas, improving the contact effect between the liquid and the exhaust gas, enhancing desulfurization and denitrification efficiency, reducing emissions, and improving the overall performance of the equipment. One end of the positioning frame 29 is fixed to the outside of the liquid distribution pipe 25, and the other end is connected to the filter tank 1. This ensures that the liquid distribution pipe 25 is stably installed inside the filter tank 1, preventing displacement due to gas flow or liquid impact, ensuring stable operation of the spraying components 2, improving equipment reliability, extending service life, and reducing maintenance workload.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 ,and Figure 9As shown, the dispersion component 3 is placed inside the filter tank 1. The dispersion component 3 includes an air inlet pipe 31 fixedly connected inside the filter tank 1. One end of the air inlet pipe 31 is fixedly connected to an air intake column 32. An air outlet 33 is opened at the bottom end of the air intake column 32. A water return mesh 34 is fixedly connected to the top end of the air intake column 32. A windbreak frame 35 is fixedly connected to the top end of the inner ring 22. An air outlet pipe 36 is fixedly connected to the top end of the windbreak frame 35. The water return mesh 34 and the windbreak frame 35 are symmetrically designed and both are conical. The bottom end of the air intake column 32 is fixedly connected to the inner ring 22. The dispersion frame 28... The outer side is fixedly connected to the outlet pipe 36, which penetrates the filter tank 1 and extends outward. The outer side of the return water mesh 34 is fixedly connected to the inner wall of the inner ring 22. The inlet pipe 31 serves as the channel for exhaust gas to enter the filter tank 1, introducing the exhaust gas containing pollutants such as sulfur dioxide, nitrogen oxides, and dust discharged from the boiler into the filter tank 1 for treatment. This achieves centralized treatment of the exhaust gas, reducing the pollution caused by direct emissions of pollutants. It is the starting point of the entire desulfurization, denitrification, and dust removal process. The induced draft column 32 guides the flow direction of the exhaust gas inside the filter tank 1, ensuring that the exhaust gas is evenly distributed and passes through the filter tank. Each treatment component, such as the sprayed desulfurization and denitrification agent and the return water network 34, ensures that the waste gas and the treatment agent fully contact and react, thereby improving the desulfurization and denitrification efficiency. The air outlet 33, as the air outlet at the bottom of the draft column 32, evenly disperses the waste gas to the bottom of the filter tank 1, promoting thorough mixing of the waste gas and the liquid sprayed at the bottom, improving the uniformity of waste gas treatment, and avoiding the problem of insufficient treatment in some areas. The return water network 34 provides preliminary cooling and humidification for the waste gas. The return water network 34 disperses the mist, allowing the pollutants in the waste gas to fully contact with the water vapor, ensuring thorough mixing of the water vapor and the waste gas, and enhancing the desulfurization and denitrification reaction. The inner ring 22 works in conjunction with the wind baffle 35 to guide the airflow and ensure that the exhaust gas flows in an orderly manner within the filter tank 1, fully contacting the sprayed desulfurization and denitrification agent. The wind baffle 35 works in conjunction with the return water network 34 to guide the exhaust gas upward, forming a uniform airflow distribution. At the same time, it prevents the exhaust gas from directly impacting the spraying component 2 above. The exhaust pipe 36 draws the treated exhaust gas out from inside the filter tank 1 and discharges it into the atmosphere. It also serves as the installation base for components such as the dispersion frame 28, achieving orderly discharge of exhaust gas, meeting environmental protection requirements, facilitating monitoring and management, and ensuring that the treated exhaust gas meets emission standards.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 ,and Figure 9As shown, a diversion component 4 is fixedly connected inside the dispersion component 3. The diversion component 4 includes a diversion column 41 fixedly connected inside the air outlet pipe 36. A water spray ring 42 is fixedly connected inside the diversion column 41. A water guide frame 43 is fixedly connected to the top of the diversion column 41. A return water column 44 is fixedly connected inside the water guide frame 43. A water tank 45 is fixedly connected to the top of the filter tank 1. A second water pump 46 is fixedly connected to the top of the filter tank 1. The output end of the second water pump 46 is fixedly connected to the water spray ring 42. The input end of the second water pump 46 is fixedly connected to the water tank 45. The bottom end of the return water column 44 is fixedly connected to the top of the water tank 45.

[0041] The diversion column 41 is installed inside the outlet duct 36 to further divert and guide the exhaust gas. As the exhaust gas exits, it is sprayed with liquid a second time through the outlet duct 36 to further remove pollutants and improve desulfurization and denitrification efficiency. The spray ring 42 forms a ring-shaped spray structure around the diversion column 41, evenly spraying the liquid delivered by the second pump 46 onto the exhaust gas to further remove pollutants. The water guide frame 43 connects the spray ring 42 to the return water column 44, guiding the liquid sprayed by the spray ring 42 to the return water column 44, achieving liquid recycling, reducing water waste, lowering operating costs, and improving water resource utilization. The return water column 44 collects the liquid guided by the water intake frame 43 and transports it to the return water tank 45, realizing the recycling of the liquid, reducing the amount of fresh water replenishment, and improving the recycling rate of water resources. The water tank 45 stores the liquid used for spraying, provides a water source for the second water pump 46, and at the same time serves as a liquid collection container for the return water column 44, realizing the circulation of the liquid, stabilizing the water supply, and improving the utilization efficiency of water resources. The second water pump 46 provides liquid power to the spray ring 42, extracts the liquid in the water tank 45 and sprays it onto the exhaust gas through the spray ring 42, realizing further purification of the exhaust gas and ensuring the continuity and stability of spraying.

[0042] like Figure 1 , Figure 2 ,and Figure 7 As shown, a gas mixing assembly 5 is fixedly connected inside the filter canister 1. The gas mixing assembly 5 includes an ozone tube 51 fixedly connected inside the filter canister 1. One end of the ozone tube 51 is fixedly connected to a gas distribution pipe 52. The bottom outer end of the gas distribution pipe 52 is fixedly connected to a gas guide pipe 53. The outer side of the gas guide pipe 53 is fixedly connected to the inside of the windshield frame 35.

[0043] Ozone tube 51 introduces ozone into the filter tank 1. Utilizing the strong oxidizing properties of ozone, pollutants such as nitrogen oxides in the exhaust gas are oxidized into substances that are easier to treat. The gas distribution pipe 52 evenly distributes the ozone delivered by the ozone tube 51 to each gas guide pipe 53 to ensure that the ozone can be fully mixed and reacted with the exhaust gas. The gas guide pipe 53 guides the ozone distributed by the gas distribution pipe 52 into the windshield frame 35 to fully contact and react with the exhaust gas, thereby achieving effective treatment of pollutants in the exhaust gas.

[0044] like Figure 1 , Figure 6 ,and Figure 9 As shown, a water control component 6 is fixedly connected to the outside of the spraying component 2. The water control component 6 includes a bottom guide water pipe 61 fixedly connected to the outside of the return column 21. An electronic switch valve 62 is fixedly connected to the outside of the bottom guide water pipe 61. A mounting bracket 63 is fixedly connected to the outside of the electronic switch valve 62. The mounting bracket 63 is fixedly connected to the outside of the filter tank 1.

[0045] The bottom guide pipe 61 collects the liquid at the bottom of the return column 21 and guides it to the electronic switch valve 62, realizing centralized control of the liquid and facilitating its management and utilization. The electronic switch valve 62 controls the opening and closing of the bottom guide pipe 61, automatically adjusting the discharge or circulation of liquid according to the equipment operation and processing needs. The mounting bracket 63 fixes the electronic switch valve 62 and the bottom guide pipe 61, ensuring their stable installation outside the filter tank 1 and preventing equipment displacement or damage due to vibration or other factors. The water vapor at the bottom comes into direct contact with the exhaust gas, causing the liquid temperature to gradually increase, while the temperature at the top is relatively low due to contact with the external environment. Through the cooperation of the bottom guide pipe 61 and the electronic switch valve 62, temperature regulation can be achieved during liquid return, thereby optimizing the liquid temperature distribution and improving the processing efficiency and stability of the entire system.

[0046] Working principle;

[0047] like Figure 1 - Figure 9 As shown:

[0048] In actual use, firstly, the exhaust gas enters the filter tank 1 through the inlet pipe 31, and then diffuses evenly through the outlet hole 33 at the bottom of the induced draft column 32. This allows the exhaust gas to come into contact with the return water network 34 for pre-wetting, thus creating conditions for the subsequent desulfurization and denitrification reactions. During the pre-wetting process, the return water network 34 sprays liquid evenly, causing the particulate matter in the exhaust gas to initially settle, while simultaneously reducing the exhaust gas temperature and improving the contact effect between the exhaust gas and the desulfurization and denitrification agent. Subsequently, the pre-wetted exhaust gas flows upward and reacts with the desulfurization and denitrification agent sprayed by the spraying component 2. The sulfur dioxide and nitrogen oxides in the exhaust gas react fully with the desulfurization and denitrification agent in the reverse contact liquid curtain, thus achieving the initial removal of pollutants. The water pump 23 in the spray assembly 2 pumps the bottom liquid to the output tank 24, and then distributes it evenly to the outlet head 26 and guide pipe 27 via the liquid distribution pipe 25. Finally, a uniform liquid curtain is formed by the dispersion frame 28, and then recycled through the return column 21 to ensure the full utilization of the desulfurization and denitrification agent. During this process, the exhaust gas continues to rise and mix with the gas mixture. The ozone in component 5 is fully mixed, and its strong oxidizing properties further oxidize pollutants such as nitrogen oxides in the exhaust gas, making them easier for the desulfurization and denitrification agents to absorb and treat. The ozone enters through ozone pipe 51 and is evenly distributed in the exhaust gas under the action of gas distribution pipe 52 and gas guide pipe 53, enhancing the oxidation effect. Subsequently, the pre-treated exhaust gas reaches the diversion component 4 and is guided by the diversion column 41, allowing the exhaust gas to come into contact again with the liquid sprayed by the water spray ring 42 for secondary desulfurization, denitrification, and dust removal. The process further improves the purification level of the exhaust gas. Under the action of the second water pump 46, the water spray ring 42 sprays the liquid in the water tank 45 evenly onto the exhaust gas. The water guide frame 43 and the return water column 44 guide the sprayed liquid back to the water tank 45 to realize the recycling of the liquid. Finally, the water control component 6 collects the liquid at the bottom of the return column 21 through the bottom guide water pipe 61. The electronic switch valve 62 automatically adjusts the discharge or circulation of the liquid according to the liquid temperature to ensure the balance of the liquid temperature and avoid the failure of the agent caused by local overheating.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A desulfurization, denitrification, and dust removal ultra-low emission device for a heating chain grate boiler, comprising a filter tank (1), characterized in that: A gas mixing assembly (5) is fixedly connected inside the filter tank (1); Spraying assembly (2); The spraying assembly (2) is placed at the bottom of the filter tank (1). The spraying assembly (2) includes a return column (21) fixedly connected to the bottom of the filter tank (1). An inner ring (22) is fixedly connected to the top of the return column (21). A water pump (23) is fixedly connected to the outside of the return column (21). An output tank (24) is fixedly connected to the output end of the water pump (23). A liquid distribution pipe (25) is fixedly connected to the end of the output tank (24) away from the water pump (23). An outlet head (26) is fixedly connected to the inside of the liquid distribution pipe (25). A guide pipe (27) is fixedly connected to the end of the outlet head (26) away from the liquid distribution pipe (25). A dispersion frame (28) is fixedly connected to the bottom of the guide pipe (27). Dispersion component (3); The dispersion component (3) is placed inside the filter tank (1). The dispersion component (3) includes an air inlet pipe (31) fixedly connected inside the filter tank (1). One end of the air inlet pipe (31) is fixedly connected to an air duct (32). The bottom end of the air duct (32) is provided with an air outlet (33). The top end of the air duct (32) is fixedly connected to a water return net (34). The top end of the inner ring (22) is fixedly connected to a wind baffle (35). The top end of the wind baffle (35) is fixedly connected to an air outlet pipe (36). The water return net (34) and the wind baffle (35) are symmetrically designed and both are conical. The bottom end of the air duct (32) is fixedly connected to the inner ring (22). The outer side of the air outlet pipe (36) penetrates the filter tank (1) and extends outward. The outer side of the water return net (34) is fixedly connected to the inner wall of the inner ring (22). The dispersing component (3) is internally fixedly connected to a diversion component (4). The diversion component (4) includes a diversion column (41) fixedly connected inside the air outlet pipe (36). A water spray ring (42) is fixedly connected inside the diversion column (41). A water guide frame (43) is fixedly connected to the top of the diversion column (41). A return water column (44) is fixedly connected inside the water guide frame (43). A water tank (45) is fixedly connected to the top of the filter tank (1). A second water pump (46) is fixedly connected to the top of the filter tank (1). The output end of the second water pump (46) is fixedly connected to the water spray ring (42). The input end of the second water pump (46) is fixedly connected to the water tank (45). The bottom end of the return water column (44) is fixedly connected to the top of the water tank (45).

2. The ultra-low emission device for desulfurization, denitrification, and dust removal of a heating chain grate boiler according to claim 1, characterized in that: A positioning frame (29) is fixedly connected to the outside of the liquid diversion pipe (25). The end of the positioning frame (29) away from the liquid diversion pipe (25) is fixedly connected to the filter tank (1). The outside of the dispersion frame (28) is fixedly connected to the air outlet pipe (36).

3. The ultra-low emission device for desulfurization, denitrification, and dust removal of a heating chain grate boiler according to claim 1, characterized in that: The gas mixing assembly (5) includes an ozone tube (51) fixedly connected inside the filter canister (1). One end of the ozone tube (51) is fixedly connected to a gas distribution pipe (52). The bottom outer end of the gas distribution pipe (52) is fixedly connected to a gas guide pipe (53). The outer side of the gas guide pipe (53) is fixedly connected to the inside of the windshield frame (35).

4. The ultra-low emission device for desulfurization, denitrification, and dust removal of a heating chain grate boiler according to claim 1, characterized in that: A water control component (6) is fixedly connected to the outside of the spraying component (2). The water control component (6) includes a bottom guide water pipe (61) fixedly connected to the outside of the return column (21). An electronic switch valve (62) is fixedly connected to the outside of the bottom guide water pipe (61). A mounting bracket (63) is fixedly connected to the outside of the electronic switch valve (62). The mounting bracket (63) is fixedly connected to the outside of the filter tank (1).

5. The ultra-low emission device for desulfurization, denitrification, and dust removal of a heating chain grate boiler according to claim 1, characterized in that: The bottom end of the return column (21) is fixedly connected to a receiving frame (7), the outside of the filter tank (1) is equipped with a switch door plate (8), and the outside of the water pump (23) is installed on the top of the receiving frame (7).

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