A hazardous waste incineration flue gas denitration spraying device

Abstract

The utility model discloses a kind of dangerous waste incineration flue gas denitration spray device, it is related to flue gas denitration spray technology field, including base, the top of the base is fixedly installed with denitration spray device main body, the top of the denitration spray device main body is fixedly connected with exhaust duct, the base and denitration spray device main body are provided with air inlet monitoring mechanism, the base and denitration spray device main body are provided with spray liquid conveying mechanism.The utility model is through the design of air inlet monitoring mechanism whole, when monitoring flue gas flow in pipe inner chamber, it will be rotated by driven blade to push rotating shaft, by the design of photoelectric sensor, the rotating speed of rotating shaft can be monitored, the flow rate of flue gas inside monitoring pipe is directly proportional to the rotating speed of rotating shaft, then according to the size of rotating speed, to control the output speed of spray liquid conveying mechanism output spray liquid, and then the output of spray liquid can be reduced when flue gas amount is less, improve the utilization of spray liquid.

Description

Technical Field

[0001] This utility model relates to the field of flue gas denitrification spraying technology, specifically to a hazardous waste incineration flue gas denitrification spraying device. Background Technology

[0002] Hazardous waste incineration flue gas refers to the mixed gas produced during the high-temperature incineration of hazardous waste. It mainly contains harmful substances such as dust, acidic gases, heavy metals, organic pollutants, and nitrogen oxides. If this flue gas is emitted directly without effective treatment, it will cause serious harm to the atmospheric environment and human health. Therefore, it must be purified through a purification system to achieve emission standards. Flue gas denitrification spraying devices are environmental protection equipment used for industrial flue gas treatment. They mainly work by using a spray absorbent liquid to chemically react with nitrogen oxides in the flue gas, converting them into harmless nitrogen and water, thereby reducing atmospheric pollutant emissions. This device typically consists of a spray tower, nozzle system, absorbent liquid circulation system, and control system. It is widely used in coal-fired power plants, steel plants, chemical plants, and other industrial fields, and is an important component of flue gas denitrification technology. Its working principle is based on wet denitrification technology, featuring high treatment efficiency and strong adaptability, effectively meeting environmental emission standards.

[0003] Traditional denitrification spraying devices do not have the function of automatically controlling the output speed of the spraying liquid. The spraying liquid will be output at a constant speed. In actual production, the rate of flue gas generation will fluctuate. If the flue gas rate is low, it will lead to the problem of wasting spraying liquid. Utility Model Content

[0004] The purpose of this invention is to provide a hazardous waste incineration flue gas denitrification spray device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A hazardous waste incineration flue gas denitrification spray device includes a base, a denitrification spray device body is fixedly installed on the top of the base, an exhaust pipe is fixedly connected to the top of the denitrification spray device body, an air intake monitoring mechanism is provided on the base and the denitrification spray device body, and a spray liquid conveying mechanism is provided on the base and the denitrification spray device body.

[0007] The air intake monitoring mechanism includes a monitoring pipe, which is fixedly connected to the air intake end of the denitrification spray device body. An internal frame is fixedly installed on the inner wall of the monitoring pipe. A rotating shaft is rotatably connected to the top of the monitoring pipe. A driven blade located in the inner cavity of the internal frame is fixedly installed on the outer wall of the rotating shaft. A kit located above the monitoring pipe is fixedly sleeved on the outer wall of the rotating shaft. A photoelectric sensor and a controller are fixedly installed on the top of the monitoring pipe.

[0008] Preferably, the air intake monitoring mechanism further includes a support leg, which is fixedly installed on the top of the base. A filter chamber is fixedly installed on the top of the support leg. An air intake port is fixedly connected to the left side of the filter chamber, and the monitoring pipe is fixedly connected to the right side of the filter chamber.

[0009] Preferably, an inclined plate is fixedly installed on the inner wall of the filter chamber, a groove is provided at the top of the inclined plate, an air filter plate is detachably connected to the inner cavity of the groove, a through groove is provided at the top of the filter chamber, and a cover plate is detachably connected to the top of the filter chamber.

[0010] Preferably, the spray liquid delivery mechanism includes a pump, which is fixedly installed on the top of the base. The output end of the pump is fixedly connected to a delivery pipe, and the end of the delivery pipe away from the pump is fixedly connected to a control pipe.

[0011] Preferably, a strip pipe is fixedly connected to the end of the control pipe, and a branch pipe is fixedly connected to the side of the strip pipe away from the control pipe. The branch pipe is fixedly connected to the liquid inlet end of the main body of the denitrification spray device.

[0012] Preferably, a partition is fixedly installed on the inner wall of the control pipe, a through hole is opened at the bottom of the partition, an electric cylinder is fixedly installed at the top of the control pipe, the telescopic end of the electric cylinder extends into the inner cavity of the control pipe and is fixedly connected to a connecting plate, and a gate is fixedly installed on the side of the connecting plate.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] Through the overall design of the air intake monitoring mechanism, when monitoring the flow of flue gas in the inner cavity of the pipeline, the driven blades will drive the rotating shaft to rotate. Through the design of photoelectric sensors, the rotation speed of the rotating shaft can be monitored. The flow rate of flue gas inside the pipeline is directly proportional to the rotation speed of the rotating shaft. Then, based on the rotation speed, the output speed of the spray liquid delivery mechanism is controlled. In this way, when the amount of flue gas is small, the output of spray liquid can be reduced, the utilization rate of spray liquid can be improved, and the waste of resources can be reduced. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the air intake monitoring mechanism of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the monitoring pipeline of this utility model;

[0018] Figure 4This is a cross-sectional structural diagram of the filter chamber of this utility model;

[0019] Figure 5 This is a cross-sectional structural diagram of the control pipeline of this utility model.

[0020] In the diagram: 1. Base; 11. Main body of denitrification spray device; 12. Exhaust pipe; 2. Air intake monitoring mechanism; 21. Support leg; 22. Filter chamber; 221. Inclined plate; 222. Groove; 223. Air filter plate; 224. Through groove; 225. Cover plate; 23. Air inlet; 24. Monitoring pipe; 241. Internal frame; 242. Rotating shaft; 243. Driven blade; 244. Kit; 245. Photoelectric sensor; 246. Controller; 3. Spray liquid conveying mechanism; 31. Pump; 32. Conveying pipe; 33. Control pipe; 331. Partition plate; 332. Through hole; 333. Electric cylinder; 334. Connecting plate; 335. Gate plate; 34. Strip pipe; 35. Branch pipe. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to embodiments:

[0022] like Figures 1-5 As shown, this utility model provides a hazardous waste incineration flue gas denitrification spray device, including a base 1, a denitrification spray device body 11 fixedly installed on the top of the base 1, an exhaust pipe 12 fixedly connected to the top of the denitrification spray device body 11, an air intake monitoring mechanism 2 provided on the base 1 and the denitrification spray device body 11, and a spray liquid conveying mechanism 3 provided on the base 1 and the denitrification spray device body 11.

[0023] The air intake monitoring mechanism 2 includes a monitoring pipe 24, which is fixedly connected to the air intake end of the denitrification spray device body 11. An internal frame 241 is fixedly installed on the inner wall of the monitoring pipe 24. A rotating shaft 242 is rotatably connected to the top of the monitoring pipe 24. A driven blade 243 located in the inner cavity of the internal frame 241 is fixedly installed on the outer wall of the rotating shaft 242. A fitting 244 located above the monitoring pipe 24 is fixedly sleeved on the outer wall of the rotating shaft 242. A photoelectric sensor 245 and a controller 246 are fixedly installed on the top of the monitoring pipe 24. Flue gas enters the monitoring pipe 24... When the gas flows through the cavity, the driven blades 243 drive the rotating shaft 242 to rotate. A reflective patch is attached to the bottom of the kit 244, and the photoelectric sensor 245 captures the reflective signal. A pulse is generated for each rotation. The rotation speed is calculated by statistically analyzing the pulse frequency. The photoelectric sensor 245 feeds back the monitored data to the controller 246. Since the flow rate of the flue gas inside the monitoring pipe 24 is proportional to the rotation speed of the rotating shaft 242, the controller 246 controls the output speed of the spray liquid conveying mechanism 3 according to the rotation speed, which can reduce the waste of spray liquid.

[0024] Furthermore, such as Figure 2 As shown, the air intake monitoring mechanism 2 also includes a support leg 21, which is fixedly installed on the top of the base 1. A filter chamber 22 is fixedly installed on the top of the support leg 21. An air intake port 23 is fixedly connected to the left side of the filter chamber 22, and a monitoring pipe 24 is fixedly connected to the right side of the filter chamber 22. The flue gas generation pipe should be connected to the end of the air intake port 23. The flue gas will enter the inner cavity of the denitrification spray device body 11 through the air intake port 23, the filter chamber 22, and the monitoring pipe 24, and then move upward and be discharged from the exhaust pipe 12. The support leg 21 is used to support the filter chamber 22 as a whole.

[0025] Furthermore, such as Figure 4 As shown, an inclined plate 221 is fixedly installed on the inner wall of the filter chamber 22. A groove 222 is provided on the top of the inclined plate 221. An air filter plate 223 is detachably connected to the inner cavity of the groove 222. A through groove 224 is provided on the top of the filter chamber 22. A cover plate 225 is detachably connected to the top of the filter chamber 22. When the flue gas flows through the inner cavity of the filter chamber 22, the air filter plate 223 can filter the flue gas and remove larger impurities inside the flue gas to ensure the smooth flow of the subsequent pipeline. The air filter plate 223 is installed in the inner cavity of the groove 222 with screws. The cover plate 225 is installed on the top of the filter chamber 22 with screws. The cover plate 225 is used to seal the top of the through groove 224. During maintenance, the user can remove the cover plate 225 and then disassemble and clean the air filter plate 223.

[0026] Furthermore, such as Figure 1 As shown, the spray liquid conveying mechanism 3 includes a pump 31, which is fixedly installed on the top of the base 1. The output end of the pump 31 is fixedly connected to a conveying pipe 32. The end of the conveying pipe 32 away from the pump 31 is fixedly connected to a control pipe 33. The end of the control pipe 33 is fixedly connected to a strip pipe 34. The side of the strip pipe 34 away from the control pipe 33 is fixedly connected to a branch pipe 35. The branch pipe 35 is fixedly connected to the inlet end of the denitrification spray device body 11. The spray liquid storage tank should be connected to the inlet end of the pump 31. By controlling the operation of the pump 31, the spray liquid can be drawn and then conveyed through the conveying pipe 32, the control pipe 33, the strip pipe 34, and the branch pipe 35 to the pipe inside the denitrification spray device body 11 and sprayed out, which comes into contact with the flue gas passing inside the denitrification spray device body 11 to achieve the denitrification function. The waste liquid can overflow from the pipe near the bottom outer side of the denitrification spray device body 11.

[0027] Furthermore, such as Figure 5As shown, a baffle 331 is fixedly installed on the inner wall of the control pipe 33. A through hole 332 is opened at the bottom of the baffle 331. An electric cylinder 333 is fixedly installed at the top of the control pipe 33. The telescopic end of the electric cylinder 333 extends into the inner cavity of the control pipe 33 and is fixedly connected to a connecting plate 334. A gate plate 335 is fixedly installed on the side of the connecting plate 334. The controller 246 controls the output speed of the spray liquid from the spray liquid conveying mechanism 3 according to the rotational speed. Specifically, when the rotational speed decreases, the electric cylinder 333 extends, causing the gate plate 335 to move downwards, increasing its overlap with the through hole 332 and limiting the flow rate of the spray liquid. When the rotational speed increases, the electric cylinder 333 extends and retracts, restoring the flow rate of the spray liquid. This design achieves the function of saving spray liquid. It is worth noting that... The photoelectric sensor 245, controller 246, and electric cylinder 333 in this solution are commercially available devices that can be purchased by those skilled in the art. No structural modifications have been made to these devices in this paper. Therefore, those skilled in the art are familiar with their working principles based on their professional knowledge and can apply them proficiently. Thus, this paper will not elaborate further on these aspects. Furthermore, this solution aims to protect the physical structure, but does not protect the circuitry and software control. The mention of the processing circuit in this paper is merely a supplementary explanation of the feasibility and authenticity of this utility model. This utility model does not seek protection for the algorithm and circuitry technology. It is worth emphasizing that although this solution does not elaborate on the electronic control program, those skilled in the art can be familiar with and apply it based on their professional knowledge.

[0028] The working principle of this hazardous waste incineration flue gas denitrification spray device will be explained in detail below.

[0029] like Figures 1-5As shown, during use, the flue gas generating pipe should be connected to the end of the inlet pipe 23. The flue gas will enter the inner cavity of the denitrification spray device body 11 through the inlet pipe 23, filter chamber 22, and monitoring pipe 24, then move upwards and be discharged from the exhaust pipe 12. The spray liquid storage tank should be connected to the inlet end of the pump 31. By controlling the operation of the pump 31, the spray liquid can be drawn and then transported through the conveying pipe 32, control pipe 33, strip pipe 34, and branch pipe 35 to the pipes inside the denitrification spray device body 11 and sprayed out, contacting the flue gas passing inside the denitrification spray device body 11 to achieve the denitrification function. The waste liquid can be discharged from the denitrification spray device body 11. The flue gas overflows from the pipe near the bottom outer side of body 11. When the flue gas flows in the inner cavity of monitoring pipe 24, it will drive the rotating shaft 242 to rotate through the driven blade 243. The bottom of the kit 244 is attached with a reflective patch. The photoelectric sensor 245 captures the reflective signal and generates a pulse for each rotation. The rotation speed is calculated by statistically analyzing the pulse frequency. The photoelectric sensor 245 will feed back the monitored data to the controller 246. When the rotation speed decreases, the control cylinder 333 extends, causing the gate 335 to move down and the overlap rate with the through hole 332 to increase, thus limiting the flow rate of the spray liquid. When the rotation speed increases, the control cylinder 333 extends and retracts to restore the flow rate of the spray liquid, thereby achieving the function of saving spray liquid.

[0030] It should be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A hazardous waste incineration flue gas denitrification spray device, characterized in that: Includes a base, on the top of which a denitrification spray device body is fixedly installed, and on the top of which an exhaust pipe is fixedly connected, and an air intake monitoring mechanism is provided on the base and the denitrification spray device body, and a spray liquid conveying mechanism is provided on the base and the denitrification spray device body. The air intake monitoring mechanism includes a monitoring pipe, which is fixedly connected to the air intake end of the denitrification spray device body. An internal frame is fixedly installed on the inner wall of the monitoring pipe. A rotating shaft is rotatably connected to the top of the monitoring pipe. A driven blade located in the inner cavity of the internal frame is fixedly installed on the outer wall of the rotating shaft. A kit located above the monitoring pipe is fixedly sleeved on the outer wall of the rotating shaft. A photoelectric sensor and a controller are fixedly installed on the top of the monitoring pipe.

2. The hazardous waste incineration flue gas denitrification spray device according to claim 1, characterized in that: The air intake monitoring mechanism also includes a support leg, which is fixedly installed on the top of the base. A filter chamber is fixedly installed on the top of the support leg. An air intake port is fixedly connected to the left side of the filter chamber, and the monitoring pipe is fixedly connected to the right side of the filter chamber.

3. The hazardous waste incineration flue gas denitrification spray device according to claim 2, characterized in that: An inclined plate is fixedly installed on the inner wall of the filter chamber. A groove is provided on the top of the inclined plate. An air filter plate is detachably connected to the inner cavity of the groove. A through groove is provided on the top of the filter chamber. A cover plate is detachably connected to the top of the filter chamber.

4. The hazardous waste incineration flue gas denitrification spray device according to claim 1, characterized in that: The spray liquid delivery mechanism includes a pump, which is fixedly installed on the top of the base. The output end of the pump is fixedly connected to a delivery pipe, and the end of the delivery pipe away from the pump is fixedly connected to a control pipe.

5. The hazardous waste incineration flue gas denitrification spray device according to claim 4, characterized in that: A strip pipe is fixedly connected to the end of the control pipe, and a branch pipe is fixedly connected to the side of the strip pipe away from the control pipe. The branch pipe is fixedly connected to the liquid inlet end of the main body of the denitrification spray device.

6. The hazardous waste incineration flue gas denitrification spray device according to claim 5, characterized in that: A partition is fixedly installed on the inner wall of the control pipe. A through hole is opened at the bottom of the partition. An electric cylinder is fixedly installed at the top of the control pipe. The telescopic end of the electric cylinder extends into the inner cavity of the control pipe and is fixedly connected to a connecting plate. A gate is fixedly installed on the side of the connecting plate.

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