Flue gas conditioning system for improving efficiency of electrostatic dust collector by using urea hydrolysis waste liquid

Abstract

The invention discloses a flue gas conditioning system for improving the efficiency of an electrostatic precipitator by using urea hydrolysis waste liquid, the system comprises a low-temperature superheater, one end of the low-temperature superheater is connected with a flue gas baffle, the other end of the low-temperature superheater is respectively connected with a pyrolyzing furnace and a flow control valve, and one end of the flow control valve extends into the inner wall of the pyrolyzing furnace and is connected with a rotary atomizing nozzle; the other end is connected with a urea hydrolysis waste liquid storage tank through a waste liquid conveying pump; the pneumatic executing mechanism is connected with the flue gas baffle and used for driving the flue gas baffle to be opened or closed; one end of the ammonia nozzle is connected with the bottom of the pyrolyzing furnace, and the other end is matched with the electrostatic dust collector. The flow of urea hydrolysis waste liquid is accurately controlled through the flow control valve, then the urea hydrolysis waste liquid is atomized through the rotary atomizing nozzle and then sprayed into the pyrolyzing furnace, the accurate tempering mode can reasonably adjust the amount of waste liquid entering the pyrolyzing furnace according to the actual flue gas condition and the operation requirement of the electrostatic dust collector, it is ensured that the tempering effect is optimal, and the quality of the urea hydrolysis waste liquid is improved. A foundation is laid for improving the efficiency of the electrostatic precipitator.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas dust removal in power plants, and in particular relates to a flue gas conditioning system which utilizes urea hydrolysis waste liquid to improve the efficiency of an electrostatic precipitator. Background Art

[0002] In industrial production, especially in areas like thermal power generation that involve large amounts of flue gas emissions, electrostatic precipitators (ESPs) are widely used as highly efficient flue gas purification equipment to remove particulate matter from flue gas, thereby reducing environmental pollution. However, the efficiency of ESPs is affected by a variety of factors, among which flue gas temperature, humidity, and the resistivity of the particulate matter play a key role.

[0003] During actual operation, the resistivity of particles in flue gas often falls within a range that is detrimental to the efficient operation of electrostatic precipitators. When the resistivity is too high, the charge is not easily released on the particle surface, which can easily form a back corona on the collecting electrode, resulting in reduced dust removal efficiency. Conversely, when the resistivity is too low, particles easily reenter the airflow after reaching the collecting electrode, similarly affecting dust removal effectiveness. Furthermore, excessively high or low flue gas temperatures and unsuitable humidity can also adversely affect the performance of electrostatic precipitators, making it difficult to achieve ideal dust removal efficiency.

[0004] To improve the efficiency of electrostatic precipitators, flue gas conditioning technology has emerged. Flue gas conditioning primarily involves adding specific substances to the flue gas to alter its physical and chemical properties, thereby optimizing parameters such as the resistivity and humidity of the particulate matter and improving the dust removal performance of the electrostatic precipitator. Currently, common flue gas conditioning methods include spraying water and injecting chemicals into the flue gas. However, these methods have some shortcomings. For example, while water spraying can increase flue gas humidity and reduce the resistivity of particulate matter, it consumes a large amount of water resources and may cause corrosion to subsequent flue gas treatment equipment. Injecting chemicals can also lead to high chemical costs and secondary environmental pollution.

[0005] Urea hydrolysis wastewater, generated during the urea hydrolysis process, contains certain concentrations of ammonia and other components. In industrial production, this wastewater typically requires specialized treatment to prevent environmental pollution, which undoubtedly increases processing costs for the company. If this wastewater could be properly utilized as a flue gas conditioning agent, it would not only solve the wastewater treatment problem and reduce corporate costs, but also achieve resource reuse, with significant economic and environmental benefits. However, currently, there are no mature technologies or systems that can effectively utilize this wastewater for flue gas conditioning to improve the efficiency of electrostatic precipitators. Summary of the Invention

[0006] The purpose of the present invention is to provide a flue gas conditioning system that utilizes urea hydrolysis waste liquid to improve the efficiency of the electrostatic precipitator, so as to solve the technical defect that the existing technology has not yet had a mature technology and system that can effectively utilize urea hydrolysis waste liquid to condition the flue gas to improve the efficiency of the electrostatic precipitator.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, a flue gas conditioning system for improving the efficiency of an electrostatic precipitator by utilizing urea hydrolysis waste liquid is provided, comprising: A low-temperature superheater, one end of which is connected to a flue gas damper, and the other end is respectively connected to a pyrolysis furnace and a flow control valve. One end of the flow control valve extends into the inner wall of the pyrolysis furnace and is connected to a rotary atomizing nozzle, and the other end is connected to a urea hydrolysis waste liquid storage tank via a waste liquid delivery pump; a pneumatic actuator connected to the smoke damper and used to drive the smoke damper to open or close; An ammonia nozzle is connected to the bottom of the pyrolysis furnace at one end and to the electrostatic precipitator at the other end.

[0008] Furthermore, the rotary atomizing nozzle comprises: The tube body has a cyclone connected to the bottom, and a plurality of diversion pipes are arranged on the circumference of the cyclone, and the ends of the diversion pipes extend into the tube body; The atomizer is installed at the bottom of the cyclone.

[0009] Furthermore, the atomizer has a conical structure.

[0010] Furthermore, the rotary atomizing nozzle is a structure with one end open and the other end closed; Among them, the open end of the rotary atomizing nozzle is located inside the pyrolysis furnace, and the blocked end of the rotary atomizing nozzle extends to the outside of the pyrolysis furnace and is connected to the flow regulating valve. One end of the flow regulating valve is connected to the flow control valve, and the other end is connected to the waste liquid delivery pump.

[0011] Furthermore, the open end of the rotary atomizing nozzle and the blocked end of the rotary atomizing nozzle are connected via a spray gun.

[0012] Furthermore, the ammonia nozzle is connected to the pyrolysis furnace through a pipeline.

[0013] Furthermore, a plurality of ammonia nozzles are provided, and the plurality of ammonia nozzles are sequentially spaced apart along the longitudinal direction of the pipeline.

[0014] Furthermore, it also includes: The controller is electrically connected to the low-temperature superheater, the pyrolysis furnace, the flow control valve, the rotary atomizing nozzle, the waste liquid delivery pump, the urea hydrolysis waste liquid storage tank, the pneumatic actuator and the atomizer.

[0015] Furthermore, the controller is a PLC controller.

[0016] In a second aspect, a smoke treatment device is provided, comprising a device body, to which is connected the smoke conditioning system for improving the efficiency of the electrostatic precipitator by utilizing urea hydrolysis waste liquid as described above.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The flow rate of urea hydrolysis waste liquid is precisely controlled by a flow control valve, and then atomized by a rotary atomizing nozzle and sprayed into the pyrolysis furnace. This precise conditioning method can reasonably adjust the amount of waste liquid entering the pyrolysis furnace according to the actual flue gas conditions and the operating requirements of the electrostatic precipitator, ensuring the best conditioning effect and laying the foundation for improving the efficiency of the electrostatic precipitator.

[0018] 2. Multiple diversion pipes are evenly distributed around the cyclone, allowing the liquid to evenly enter the cyclone and participate in the rotary atomization process. This uniform distribution ensures the spatial uniformity of the atomized droplets, avoids excessive or insufficient droplets in local areas, ensures the consistency and stability of the flue gas conditioning effect, and thus helps improve the overall dust removal efficiency of the electrostatic precipitator.

[0019] 3. When the liquid flows out of the conical atomizer, its special shape can guide the liquid into the surrounding space in a more dispersed manner. Under the action of the conical structure, the liquid is subjected to forces and speed changes in different directions, making it easier for the droplets to be dispersed into finer particles during the formation process.

[0020] 4. The structural design of sealing one end of the rotary atomizing nozzle, combined with its connection method with the flow control valve, can effectively prevent the high-temperature gas or liquid in the pyrolysis furnace from flowing back into the waste liquid delivery pump, flow control valve and other equipment.

[0021] 5. The connection function of the spray gun enables the nozzle to withstand the impact of smoke, avoid nozzle displacement or damage, and ensure the normal operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 Schematic diagram of a flue gas conditioning system for improving the efficiency of an electrostatic precipitator by utilizing urea hydrolysis waste liquid provided by the present invention; Figure 2A schematic diagram of a rotary atomizing nozzle in a flue gas conditioning system for improving the efficiency of an electrostatic precipitator by utilizing urea hydrolysis waste liquid provided by the present invention; Among them: 1. Boiler; 2. Low-temperature superheater; 3. Flue gas damper; 4. Pyrolysis furnace; 5. Pyrolysis furnace inlet; 6. Spray gun; 7. Flow control valve; 8. Waste liquid transfer pump; 9. Urea hydrolysis waste liquid storage tank; 10. Electrostatic precipitator; 11. Chimney; 12. Flow control valve; 13. Pyrolysis furnace outlet; 14. Ammonia nozzle; 15. Rotary atomizing nozzle; 15-1. Diverter pipe; 15-2. Cyclone; 15-3. Atomizer; 16. Pneumatic actuator. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0027] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "horizontal," "inner," etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is typically placed when in use. These terms are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0030] In industrial production, especially in areas like thermal power generation that involve large amounts of flue gas emissions, electrostatic precipitators (ESPs) are widely used as highly efficient flue gas purification equipment to remove particulate matter from flue gas, thereby reducing environmental pollution. However, the efficiency of ESPs is affected by a variety of factors, among which flue gas temperature, humidity, and the resistivity of the particulate matter play a key role.

[0031] During actual operation, the resistivity of particles in flue gas often falls within a range that is detrimental to the efficient operation of electrostatic precipitators. When the resistivity is too high, the charge is not easily released on the particle surface, which can easily form a back corona on the collecting electrode, resulting in reduced dust removal efficiency. Conversely, when the resistivity is too low, particles easily reenter the airflow after reaching the collecting electrode, similarly affecting dust removal effectiveness. Furthermore, excessively high or low flue gas temperatures and unsuitable humidity can also adversely affect the performance of electrostatic precipitators, making it difficult to achieve ideal dust removal efficiency.

[0032] To improve the efficiency of electrostatic precipitators, flue gas conditioning technology has emerged. Flue gas conditioning primarily involves adding specific substances to the flue gas to alter its physical and chemical properties, thereby optimizing parameters such as the resistivity and humidity of the particulate matter and improving the dust removal performance of the electrostatic precipitator. Currently, common flue gas conditioning methods include spraying water and injecting chemicals into the flue gas. However, these methods have some shortcomings. For example, while water spraying can increase flue gas humidity and reduce the resistivity of particulate matter, it consumes a large amount of water resources and may cause corrosion to subsequent flue gas treatment equipment. Injecting chemicals can also lead to high chemical costs and secondary environmental pollution.

[0033] Urea hydrolysis wastewater, generated during the urea hydrolysis process, contains certain concentrations of ammonia and other components. In industrial production, this wastewater typically requires specialized treatment to prevent environmental pollution, which undoubtedly increases processing costs for the company. If this wastewater could be properly utilized as a flue gas conditioning agent, it would not only solve the wastewater treatment problem and reduce corporate costs, but also achieve resource reuse, with significant economic and environmental benefits. However, currently, there are no mature technologies or systems that can effectively utilize this wastewater for flue gas conditioning to improve the efficiency of electrostatic precipitators.

[0034] To address the technical deficiencies mentioned in the background art, this embodiment provides a flue gas conditioning system that utilizes urea hydrolysis wastewater to improve the efficiency of an electrostatic precipitator. The present invention is further described in detail below with reference to the accompanying drawings: In a first aspect, an embodiment of the present invention provides a flue gas conditioning system for improving the efficiency of an electrostatic precipitator by utilizing urea hydrolysis wastewater, such as Figure 1-Figure 2 As shown, the system includes a low-temperature superheater 2, one end of which is connected to a flue gas damper 3, and the other ends are connected to a pyrolysis furnace 4 and a flow control valve 12. One end of the flow control valve 12 extends into the inner wall of the pyrolysis furnace 4 and is connected to a rotary atomizing nozzle 15. The other end is connected to a urea hydrolysis waste liquid storage tank 9 via a waste liquid delivery pump 8. A pneumatic actuator 16 is connected to the flue gas damper 3 for driving the flue gas damper 3 to open or close. An ammonia nozzle 14 is connected to the bottom of the pyrolysis furnace 4 at one end and cooperates with an electrostatic precipitator 10 at the other end. Through the connection between the above components, the urea hydrolysis waste liquid, which originally required special treatment and increased enterprise costs, is rationally utilized and converted into an effective material for flue gas conditioning. This achieves resource recycling of waste, reduces the enterprise's waste liquid treatment costs, and reduces the environmental pollution risks caused by waste liquid discharge, conforming to the concept of sustainable development. Compared with the traditional method of injecting chemical agents for flue gas conditioning, this system utilizes urea hydrolysis waste liquid, avoiding the secondary pollution problems that may be caused by the introduction of new chemical agents, and is more environmentally friendly. Secondly, the flow rate of the urea hydrolysis waste liquid is accurately controlled by the flow control valve 12, and then it is atomized by the rotary atomizing nozzle 15 and sprayed into the pyrolysis furnace 4. This precise tempering method can reasonably adjust the amount of waste liquid entering the pyrolysis furnace 4 according to the actual flue gas conditions and the operating requirements of the electrostatic precipitator 10, ensuring the best tempering effect and laying the foundation for improving the efficiency of the electrostatic precipitator 10.

[0035] In addition, after the urea hydrolysis waste liquid is treated in the pyrolysis furnace 4, the substances produced can change the physical and chemical properties of the flue gas, such as adjusting the humidity of the flue gas, reducing the resistivity of the particulate matter, etc., making the flue gas conditions more conducive to the operation of the electrostatic precipitator 10, thereby significantly improving the dust removal efficiency of the electrostatic precipitator 10, effectively reducing the emission of particulate matter in the flue gas, and meeting increasingly stringent environmental protection requirements.

[0036] The pneumatic actuator 16 is connected to the flue gas damper 3 and can flexibly drive the flue gas damper 3 to open or close according to actual production needs and system operating conditions, thereby adjusting the flue gas flow entering the low-temperature superheater 2 and the subsequent pyrolysis furnace 4, ensuring that the system can operate stably and efficiently under different operating conditions.

[0037] One end of the ammonia nozzle 14 is connected to the bottom of the pyrolysis furnace 4, and the other end cooperates with the electrostatic precipitator 10, so that the flue gas treated by the pyrolysis furnace 4 can smoothly enter the electrostatic precipitator 10 for dust removal operation. The various components work together to form a complete and efficient flue gas conditioning and dust removal system, thereby improving the operating efficiency and reliability of the entire system.

[0038] Specifically, the rotary atomizing nozzle 15 comprises a tube body, with a cyclone 15-2 connected to its bottom. Multiple diverter tubes 15-1 are arranged around the circumference of the cyclone 15-2, with the ends of the diverter tubes 15-1 extending into the tube body. An atomizer 15-3 is mounted at the bottom of the cyclone 15-2. Once urea hydrolysis wastewater enters the tube body, it passes through the diverter tubes 15-1 and into the cyclone 15-2. The cyclone 15-2 induces a strong rotational motion in the liquid, which disperses it into extremely fine droplets. Compared with ordinary atomizing nozzles, the rotary atomization method generated by the cyclone 15-2 can make the droplet size smaller and more uniform, greatly increasing the contact area between the droplets and the flue gas, which is conducive to the full mixing and reaction of the effective components in the urea hydrolysis waste liquid with the flue gas, thereby better playing the role of flue gas conditioning; secondly, multiple diversion pipes 15-1 are evenly distributed on the cyclone 15-2, so that the liquid can evenly enter the cyclone 15-2 and participate in the rotary atomization process. This uniform distribution method ensures the uniformity of the atomized droplets in space, avoiding excessive or insufficient droplets in local areas. The situation ensures the consistency and stability of the flue gas conditioning effect, which is beneficial to improving the overall dust removal efficiency of the electrostatic precipitator; in addition, the diversion pipe 15-1 allows the liquid to be preliminarily dispersed before entering the cyclone 15-2, reducing the possibility of the liquid forming a local high-concentration area inside the pipe body and reducing the risk of blockage due to excessive liquid concentration. At the same time, the centrifugal force generated by the rotary atomization also helps to throw impurities in the liquid to the pipe wall, preventing them from entering the core area of ​​the atomizer and causing blockage, ensuring the long-term stable operation of the nozzle and reducing the maintenance cost and downtime of the equipment.

[0039] The atomizer 15-3 is installed at the bottom of the cyclone 15-2, and can fully utilize the rotational kinetic energy generated by the cyclone 15-2. After the liquid rotates through the cyclone 15-2, the atomizer 15-3 can further refine the droplets, and more efficiently convert the kinetic energy of the liquid into the surface energy of the droplets, thereby realizing effective energy utilization, reducing energy loss, and improving the efficiency of the entire atomization process.

[0040] In this embodiment, the atomizer 15-3 has a conical structure. When the liquid flows out, the special shape of the atomizer 15-3 with a conical structure can guide the liquid into the surrounding space in a more dispersed manner. Under the action of the conical structure, the liquid is subjected to forces and speed changes in different directions, making it easier for the droplets to be dispersed into finer particles during the formation process.

[0041] The rotary atomizing nozzle 15 is a structure with one end open and the other end blocked. The open end of the rotary atomizing nozzle 15 is located inside the pyrolysis furnace 4, while the blocked end of the rotary atomizing nozzle 15 extends outside the pyrolysis furnace 4 and is connected to a flow regulating valve 7. The flow regulating valve 7 is connected at one end to a flow control valve 12, and at the other end to a waste liquid delivery pump 8. The open end of the rotary atomizing nozzle 15 and the blocked end of the rotary atomizing nozzle 15 are connected via a spray gun 6. After the urea hydrolysis waste liquid is discharged from the waste liquid delivery pump 8, it can undergo dual flow regulation via the flow control valve 12 and the flow regulating valve 7. The flow control valve 12 provides preliminary control of the waste liquid flow rate, while the flow regulating valve 7 can precisely and in real time fine-tune the waste liquid flow rate entering the rotary atomizing nozzle 15 based on the flue gas conditions in the pyrolysis furnace 4 and the operating requirements of the electrostatic precipitator 10, ensuring that the atomization effect is always optimal and improving flue gas conditioning and dust removal efficiency.

[0042] The structural design of sealing one end of the rotary atomizing nozzle 15, combined with its connection method with the flow regulating valve 7, can effectively prevent the high-temperature gas or liquid in the pyrolysis furnace 4 from flowing back into the waste liquid delivery pump 8 and the flow control valve 12 and other equipment. During the operation of the pyrolysis furnace 4, the internal pressure and temperature change greatly. If there is no effective anti-backflow measure, it may cause damage to the waste liquid delivery pump 8, failure of the flow control valve 12 and other problems, affecting the normal operation of the entire system. This structure can avoid such situations and ensure the stability and reliability of the system.

[0043] The sealed end of the rotary atomizing nozzle 15 extends to the outside of the pyrolysis furnace 4, so that when the flow regulating valve 7, the flow control valve 12 or the rotary atomizing nozzle 15 itself needs to be repaired or replaced, there is no need to open the pyrolysis furnace 4, which reduces the difficulty and risk of the maintenance work.

[0044] In this embodiment, the open end of the rotary atomizing nozzle 15 and the blocked end of the rotary atomizing nozzle 15 are connected by a spray gun 6. The interior of the spray gun 6 is usually designed with a reasonable fluid channel, which can guide the urea hydrolysis waste liquid to flow smoothly from the blocked end to the open end, reduce the resistance loss and turbulence of the fluid during the transmission process, help to improve the transportation efficiency of the waste liquid, and enable the waste liquid to enter the rotary atomization area at a stable flow rate and pressure, thereby ensuring the uniformity and stability of the atomization effect.

[0045] The ammonia nozzle 14 is connected to the pyrolysis furnace 4 through a pipeline, and a plurality of ammonia nozzles 14 are provided, and the plurality of ammonia nozzles 14 are sequentially spaced apart along the longitudinal direction of the pipeline.

[0046] This solution also includes a controller, which is a PLC controller. The controller is electrically connected to the low-temperature superheater 2, the pyrolysis furnace 4, the flow control valve 12, the rotary atomizing nozzle 15, the waste liquid delivery pump 8, the urea hydrolysis waste liquid storage tank 9, the pneumatic actuator 16 and the atomizer 15-3.

[0047] like Figure 1 As shown, the controller controls the pneumatic actuator 16 to open the flue gas damper 3, and the flue gas damper 3 blocks the end of the boiler 1 connected to the electrostatic precipitator, and opens the end of the boiler 1 connected to the low-temperature superheater 2. The flue gas generated by the boiler 1 passes through the low-temperature superheater 2 and the pyrolysis furnace inlet 5 into the pyrolysis furnace 4; at the same time, the urea hydrolysis waste liquid storage tank 9 conveys the urea hydrolysis waste liquid to the pyrolysis furnace 4 through the waste liquid conveying pump 8 and the flow regulating valve 7. After pyrolysis in the pyrolysis furnace 4, the waste liquid flows into the ammonia nozzle 14 through the pipeline; since the ammonia nozzle 14 is installed in the electrostatic precipitator 10, the final flue gas is discharged to the electrostatic precipitator 10 through the ammonia nozzle 14, and then conveyed to the chimney 11 by the electrostatic precipitator 10.

[0048] In a second aspect, a smoke treatment device is provided, comprising a device body, to which is connected the smoke conditioning system for improving the efficiency of the electrostatic precipitator by utilizing urea hydrolysis waste liquid as described above.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit its scope of protection. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art may still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the scope of protection of the pending claims of the invention.

Claims

1. A flue gas conditioning system that utilizes urea hydrolysis wastewater to improve the efficiency of an electrostatic precipitator, characterized in that: include: A low-temperature superheater, one end of which is connected to a flue gas damper, and the other end is respectively connected to a pyrolysis furnace and a flow control valve. One end of the flow control valve extends into the inner wall of the pyrolysis furnace and is connected to a rotary atomizing nozzle, and the other end is connected to a urea hydrolysis waste liquid storage tank via a waste liquid delivery pump; a pneumatic actuator connected to the smoke damper and used to drive the smoke damper to open or close; An ammonia nozzle is connected to the bottom of the pyrolysis furnace at one end and to the electrostatic precipitator at the other end.

2. The flue gas conditioning system for improving the efficiency of electrostatic precipitator by utilizing urea hydrolysis waste liquid according to claim 1, characterized in that: The rotary atomizing nozzle comprises: The tube body has a cyclone connected to the bottom, and a plurality of diversion pipes are arranged on the circumference of the cyclone, and the ends of the diversion pipes extend into the tube body; The atomizer is installed at the bottom of the cyclone.

3. The flue gas conditioning system for improving the efficiency of electrostatic precipitator by utilizing urea hydrolysis waste liquid according to claim 2, characterized in that: The atomizer is a conical structure.

4. The flue gas conditioning system for improving the efficiency of electrostatic precipitator by utilizing urea hydrolysis waste liquid according to claim 1, characterized in that: The rotary atomizing nozzle has a structure with one end open and the other end blocked; Among them, the open end of the rotary atomizing nozzle is located inside the pyrolysis furnace, and the blocked end of the rotary atomizing nozzle extends to the outside of the pyrolysis furnace and is connected to the flow regulating valve. One end of the flow regulating valve is connected to the flow control valve, and the other end is connected to the waste liquid delivery pump.

5. The flue gas conditioning system for improving the efficiency of electrostatic precipitator by utilizing urea hydrolysis waste liquid according to claim 4, characterized in that: The open end of the rotary atomizing nozzle and the blocked end of the rotary atomizing nozzle are connected via a spray gun.

6. The flue gas conditioning system for improving the efficiency of electrostatic precipitator by utilizing urea hydrolysis waste liquid according to claim 1, characterized in that: The ammonia nozzle is connected to the pyrolysis furnace through a pipeline.

7. The flue gas conditioning system for improving the efficiency of electrostatic precipitator by utilizing urea hydrolysis waste liquid according to claim 5, characterized in that: A plurality of ammonia nozzles are provided, and the plurality of ammonia nozzles are sequentially spaced apart along the longitudinal direction of the pipeline.

8. The flue gas conditioning system for improving the efficiency of electrostatic precipitator by utilizing urea hydrolysis waste liquid according to claim 1, characterized in that: Also includes: The controller is electrically connected to the low-temperature superheater, the pyrolysis furnace, the flow control valve, the rotary atomizing nozzle, the waste liquid delivery pump, the urea hydrolysis waste liquid storage tank, the pneumatic actuator and the atomizer.

9. The flue gas conditioning system for improving the efficiency of electrostatic precipitator by utilizing urea hydrolysis waste liquid according to claim 8, characterized in that: The controller is a PLC controller.

10. A smoke treatment device, comprising a device body, characterized in that: The device body is connected to the flue gas conditioning system for improving the efficiency of the electrostatic precipitator by utilizing urea hydrolysis waste liquid as described in any one of claims 1 to 9.

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