A wireless real-time monitoring ammonia spray gun that is easy to maintain

Abstract

This utility model belongs to the technical field of desulfurization and denitrification equipment, specifically relating to a wireless real-time monitoring ammonia spray gun that is easy to maintain. The ammonia spray gun includes a spray gun tube, one end of which is an atomizing nozzle, and the other end is an ammonia inlet. A flange is installed on the outside of the spray gun tube, and a quick-connect male connector is installed on the side of the flange near the ammonia inlet. A matching quick-connect female connector is installed on the outside of the spray gun tube. The ammonia inlet is connected to an ammonia water pipe, and an ammonia control valve is installed on the ammonia water pipe. A differential pressure switch is installed on the ammonia water pipe between the ammonia inlet and the ammonia control valve, and this differential pressure switch is electrically connected in series with a wireless alarm via a power cord. A compressed air pipe is installed on the side of the spray gun tube near the ammonia inlet. This ammonia spray gun innovatively adds a quick-connect device and a real-time detection device, effectively realizing rapid maintenance of ammonia spray gun blockage faults and real-time detection of operating status.

Description

Technical Field

[0001] This utility model belongs to the technical field of desulfurization and denitrification equipment, specifically relating to a wireless real-time monitoring ammonia spray gun that is easy to maintain. Background Technology

[0002] Ammonia water mainly acts as an absorbent in the desulfurization and denitrification process, removing sulfur dioxide (SO2) and nitrogen oxides (NOx) from flue gas through chemical reactions. x Its specific functions are as follows: (1) Desulfurization: Ammonia water (NH3·H2O) reacts chemically with sulfur dioxide in flue gas to produce ammonium sulfite, ammonium sulfate and other salts, thereby separating SO2 from the flue gas. The generated ammonium salts can be further processed into fertilizers and other by-products, realizing resource recovery.

[0003] The reaction formula is roughly as follows: 2NH3·H2O+SO2→(NH4)2SO3+H2O; (NH4)2SO3+SO2+H2O→2NH4HSO3.

[0004] (2) Denitrification: In the denitrification process (such as selective non-catalytic reduction (SNCR), ammonia water is used as a reducing agent to react with nitrogen oxides (mainly NO and NO2) at high temperature (usually 850-1100℃) and reduce them to harmless nitrogen gas (N2) and water (H2O).

[0005] The reaction formula is roughly as follows: 4NH3+4NO+O2→4N2+6H2O; 8NH3+6NO2→7N2+12H2O.

[0006] It is evident that ammonia water, as an absorbent, exhibits high reactivity, high desulfurization and denitrification efficiency, and its products are easy to handle, making it one of the commonly used alkaline agents in industrial flue gas purification. The ammonia water spray gun, as a key environmental protection device in the desulfurization and denitrification system, functions by atomizing ammonia water and spraying it into the exhaust gas, thereby reducing the nitrogen oxide content in the exhaust gas, ensuring that the denitrification of the exhaust gas meets the stringent environmental protection requirements.

[0007] However, due to the unavoidable presence of impurities in ammonia water, the atomizing head of the spray gun is prone to clogging during actual use. Once clogging occurs, it directly affects the denitrification or desulfurization effect. If not detected and addressed in time, it could potentially lead to exceeding environmental standards and causing serious environmental problems.

[0008] Currently, the main measures taken to address the problem of ammonia spray gun blockage are: first, assigning personnel to regularly visit the site and inspect the spray gun connection devices; second, when data anomalies occur, checking and repairing all spray guns on the upper part of the desulfurization or denitrification tower one by one. However, the existing spray gun connection method has obvious drawbacks. The fixing screws used require special tools for disassembly and inspection. During inspection, the fixing screws must be loosened and the spray gun pulled out to check the spraying situation, making the operation process cumbersome and complicated. When data anomalies require troubleshooting, since each desulfurization or denitrification tower is usually equipped with four sets of ammonia spray guns connected in parallel, each one must be checked, which undoubtedly consumes a lot of time. In addition, the desulfurization and denitrification systems are often far from the duty room, making on-site inspections not only time-consuming and labor-intensive, but also prone to causing environmental accidents if inspections are missed or delayed.

[0009] Further analysis revealed the following specific problems during the use and inspection of the ammonia spray gun: (1) Current detection methods have limitations, lack monitoring, and lack a real-time monitoring system, making it impossible to achieve real-time and accurate monitoring. In actual work, equipment failures cannot be detected in time. Usually, the failure can only be judged based on the changes in ammonia pressure and flow when the back-end discharge data is abnormal. This lagging and passive detection method is difficult to meet the needs of efficient operation and maintenance and will delay the repair time.

[0010] (2) The maintenance is inefficient and the fault location efficiency is low, making it impossible to pinpoint the specific fault point quickly and accurately in one go. Due to the structural characteristics of multiple spray guns operating in parallel, when a fault is detected in a spray gun, each spray gun needs to be checked one by one, and the entire process of disassembly and installation is required. This takes a long time each time, which greatly increases the time cost of fault diagnosis, increases downtime and labor costs, and affects the subsequent environmental data control.

[0011] (3) The disassembly and assembly operation is inconvenient and cannot be carried out by hand. The existing ammonia spray gun needs to be disassembled regularly to check the spraying effect, but due to its structural design, it must be disassembled with the help of special tools, which undoubtedly increases the difficulty of the inspection work and prolongs the working time.

[0012] The above three issues have significantly impacted the stability of environmental data and the workload of staff in these positions.

[0013] To minimize the negative impact of these problems, the only current measure is to increase the frequency of inspections. On the one hand, control room personnel need to closely monitor changes in ammonia water pressure and flow rate to determine if any blockages are present; on the other hand, on-site personnel also need to frequently visit the site to inspect the spray guns. However, the existing inspection methods still cannot monitor the ammonia water spray guns in real time. Once environmental data becomes abnormal, tracing the cause of the malfunction is often too time-consuming, easily leading to exceeding environmental standards and causing numerous adverse factors for environmental compliance efforts and the daily work of on-site personnel. Utility Model Content

[0014] The purpose of this invention is to provide a wireless real-time monitoring ammonia spray gun that is easy to maintain, addressing the aforementioned shortcomings. This wireless real-time monitoring ammonia spray gun, through the innovative addition of a quick-connect device and a real-time detection device, effectively achieves rapid maintenance of ammonia spray gun blockage and real-time monitoring of its operating status.

[0015] Specifically, a quick-connect device is installed at the spray gun linkage to enable rapid disassembly and installation of the spray gun, ensuring quick handling in case of malfunctions; a detection device and a wireless alarm device are configured at the ammonia inlet to enable real-time detection of ammonia spray gun blockage, thereby achieving accurate detection and rapid alarm for abnormal ammonia flow.

[0016] The technical solution of this utility model is as follows: A wireless real-time monitoring ammonia spray gun with easy maintenance includes a spray gun tube, one end of which is an atomizing nozzle, and the other end is an ammonia inlet. A flange is installed on the outside of the spray gun tube, and a quick-connect male connector is installed on the side of the flange near the ammonia inlet. A matching quick-connect female connector is installed on the outside of the spray gun tube. This design allows for quick disassembly and inspection when the ammonia spray gun malfunctions; and for rapid reinstallation after troubleshooting, greatly improving maintenance efficiency.

[0017] The ammonia inlet is connected to an ammonia pipe, and an ammonia control valve is installed on the ammonia pipe; a differential pressure switch is installed on the ammonia pipe between the ammonia inlet and the ammonia control valve, and the differential pressure switch is connected in series with the wireless alarm via a power cord.

[0018] When ammonia water flows normally, there is a pressure difference in the ammonia water pipe. The differential pressure switch detects the pressure difference and is in the open state. Therefore, the wireless alarm connected to it is not activated and the wireless alarm will not sound. However, when ammonia water does not flow, there is no pressure difference in the ammonia water pipe. At this time, the differential pressure switch is activated and is in the closed state, activating the wireless alarm and sounding an alarm.

[0019] A compressed air pipe is installed on the side of the spray gun tube near the ammonia inlet. Compressed air introduced through the compressed air pipe is used to assist in the ammonia atomization.

[0020] Furthermore, the atomizing nozzle and the spray gun pipe body between the atomizing nozzle and the flange are placed inside the desulfurization / denitrification tower.

[0021] Furthermore, the quick-connect female connector, ammonia inlet, and ammonia pipe are located outside the desulfurization / denitrification tower.

[0022] Furthermore, the flange is located on the outside of the pipe body at the ammonia inlet in the middle of the spray gun pipe.

[0023] Furthermore, a threaded end is welded to the side of the flange near the ammonia inlet, through which a quick-connect male connector is connected.

[0024] Furthermore, a threaded end is welded onto the spray gun tube body near the quick-connect male connector, through which the quick-connect female connector is connected.

[0025] Furthermore, the wireless alarm is remotely located via a mobile app. Each ammonia spray gun and its corresponding wireless alarm are assigned the same location number, which is then set on the mobile app connected to the alarm. This allows operators to remotely monitor the blockage status of each ammonia spray gun in real time and directly and accurately locate the blocked gun. The on-site inspection method is optimized, changing the traditional method of disassembling each ammonia spray gun for inspection. With this invention, the ammonia spray gun only needs to have its ammonia control valve closed, and the inspection can be completed using the wireless alarm's indication and the improved quick-connect male / female connector method.

[0026] The beneficial effects of this utility model are as follows: From a structural perspective, the wireless real-time monitoring ammonia spray gun described in this utility model, which is easy to maintain, has a simple design. A differential pressure switch is installed on the ammonia pipe connected to the ammonia inlet. The opening and closing of the differential pressure switch is controlled by the pressure difference, which in turn controls the wireless alarm to sound an alarm based on the blockage status of the ammonia spray gun nozzle, thereby achieving real-time detection of nozzle blockage.

[0027] During on-site inspections, the accuracy of the differential pressure switch and wireless alarm can be verified by closing the ammonia water valve, thus determining whether the spray nozzles are clogged. This method eliminates the cumbersome process of having to open the equipment to inspect the spray nozzles, improving detection efficiency and enabling precise location of the ammonia water spray gun upon alarm activation. By assigning a location number to the ammonia water spray gun via a mobile app connected to the wireless alarm, remote and precise location is achieved, avoiding the time-consuming process of checking each nozzle individually. This further shortens inspection and maintenance time and effectively prevents data exceeding limits due to excessive inspection and processing time.

[0028] In terms of functionality, the easy-to-maintain wireless real-time monitoring ammonia spray gun boasts a significant advantage with its quick-connect feature. Based on precise positioning, on-site personnel can directly disassemble the equipment for troubleshooting using the quick-connect device. After troubleshooting, installation is performed using the quick-connect device. This process significantly reduces disassembly and installation time during maintenance, saving valuable time for rapid equipment repair, enabling the equipment to return to operation as quickly as possible, effectively reducing downtime, ensuring stable environmental data, and preventing data exceedances.

[0029] In summary, the application of this easy-to-maintain wireless real-time monitoring ammonia spray gun in desulfurization and denitrification systems enables real-time detection and precise positioning of the ammonia spray gun, significantly reducing the time required for equipment fault inspection and maintenance, and ensuring stable and reliable environmental data. Furthermore, this device can serve as a foundational piece of equipment for intelligent inspection, helping to reduce the frequency of on-site equipment inspections and laying a solid foundation for enterprises to optimize the allocation of human resources. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the installation of the easy-to-maintain wireless real-time monitoring ammonia spray gun described in this utility model in a desulfurization tower.

[0031] Figure 2 This is a schematic diagram of the structure of the wireless real-time monitoring ammonia spray gun that is easy to maintain, as described in this utility model.

[0032] Figure 3 This is a schematic diagram of the flange in the wireless real-time monitoring ammonia spray gun that is easy to maintain, as described in this utility model.

[0033] Among them, 1 is the desulfurization tower, 2 is the ammonia water spray gun, 3 is the flange, 201 is the spray gun pipe, 202 is the atomizing nozzle, 203 is the ammonia water inlet, 204 is the quick-connect male connector, 205 is the quick-connect female connector, 206 is the ammonia water pipe, 207 is the ammonia water control valve, 208 is the differential pressure switch, 209 is the power cord, 210 is the wireless alarm, 211 is the compressed air pipe, and 212 is the compressed air control valve. Detailed Implementation

[0034] The technical solution of this utility model will now be described in detail with reference to the accompanying drawings.

[0035] Example 1 The aforementioned easy-to-maintain wireless real-time monitoring ammonia spray gun includes a spray gun tube 201, one end of which is an atomizing nozzle 202, and the other end of which is an ammonia inlet 203; a flange 3 is installed on the outside of the spray gun tube 201, and the flange 3 is located in the middle of the spray gun tube 201, on the outside of the ammonia inlet 203.

[0036] A quick-connect male connector 204 is installed on the side of the flange 3 near the ammonia inlet 203. Specifically, a threaded end is welded to the side of the flange 3 near the ammonia inlet 203, through which the quick-connect male connector 204 is connected.

[0037] A quick-connect female connector 205, which matches the quick-connect male connector 204, is installed on the outside of the spray gun tube 201. Specifically, a thread is welded to the spray gun tube 201 near the quick-connect male connector 204, through which the quick-connect female connector 205 is connected.

[0038] The atomizing nozzle 202 and the spray gun pipe 201 between the atomizing nozzle 202 and the flange 3 are placed inside the desulfurization / denitrification tower.

[0039] The ammonia inlet 203 is connected to an ammonia pipe 206, and an ammonia control valve 207 is installed on the ammonia pipe 206. A differential pressure switch 208 is installed on the ammonia pipe 206 between the ammonia inlet 203 and the ammonia control valve 207. The differential pressure switch 208 is electrically connected in series with the wireless alarm 210 via a power line 209. The quick-connect female connector 205, the ammonia inlet 203, and the ammonia pipe 206 are located outside the desulfurization / denitrification tower.

[0040] The wireless alarm 210 is remotely located via a mobile app. Each ammonia spray gun 2 and its corresponding wireless alarm 210 are assigned the same location number, which is then set on the mobile app connected to the wireless alarm 210. This allows operators to remotely monitor the blockage status of each ammonia spray gun 2 in real time and to directly and accurately locate the blocked ammonia spray gun 2.

[0041] A compressed air pipe 211 is installed on the side of the spray gun pipe 201 near the ammonia inlet 203. Compressed air introduced through the compressed air pipe 211 is used to assist in the ammonia atomization. A compressed air control valve 212 is installed on the compressed air pipe 211.

[0042] When ammonia water flows normally, there is a pressure difference in ammonia water pipe 206. When the pressure difference is detected by the differential pressure switch 208, it is in the open state. Therefore, the wireless alarm 210 connected to it is not connected, and the wireless alarm 210 will not sound an alarm.

[0043] When ammonia water is not flowing, i.e., when the atomizing nozzle 202 is blocked, there is no pressure difference in the ammonia water pipe 206. At this time, the differential pressure switch 208 is triggered to be in the closed state, forming a closed circuit and activating the wireless alarm 210. The wireless alarm 210 transmits a signal to the mobile phone of the on-site personnel. The mobile phone applet will display the specific location number of the ammonia water spray gun 2 that was alarmed. When the on-site personnel arrive at the scene, they can quickly remove the ammonia water spray gun 2 through the quick-connect female connector 205, check the condition of the atomizing nozzle 202, and after handling the situation according to the actual situation, restore operation by inserting the quick-connect male connector 204 through the inner diameter.

[0044] Therefore, the ammonia spray gun described in this invention reduces the frequency of inspections while achieving real-time detection and precise positioning of the spray gun. Upon arrival at the site, inspection personnel no longer need to check each nozzle individually to pinpoint the fault, significantly saving inspection time. During troubleshooting, the quick-connect device facilitates disassembly and installation, effectively shortening repair time.

[0045] In addition, the routine inspection method has been optimized, changing from the original disassembly inspection to controlling the opening and closing of valves with ammonia water, and using the indicator lights of the wireless alarm to confirm whether the spray gun and auxiliary equipment are normal, further reducing inspection time.

[0046] These improvements significantly enhance the efficiency of emergency response after a malfunction, effectively ensuring that environmental data does not exceed standards and preventing environmental accidents. Through real-time inspection of the ammonia spray gun, this invention can promptly identify and address potential problems, preventing further damage caused by equipment failure, thus possessing significant practical value and potential for wider application.

[0047] Application Example 1 The easy-to-maintain wireless real-time monitoring ammonia spray gun has been successfully applied in the No. 1 and No. 2 desulfurization and denitrification systems of a certain factory, covering a total of 8 spraying devices for the two desulfurization towers.

[0048] Real-time monitoring: In case of an anomaly, the battery-powered wireless alarm immediately triggers a remote warning signal to the central control unit's mobile phone, responding within 10 seconds, improving fault detection efficiency by 90%.

[0049] Quick-release design: Adopting a snap-on quick interface, the maintenance and disassembly time is reduced from 10 minutes to 10 seconds, improving efficiency by more than 98%, increasing the operation speed by 60 times, and significantly enhancing the interface sealing.

[0050] Precise positioning: Equipped with an electromagnetic shut-off valve and an independent metering unit, it achieves "single-set fault, one-click isolation", with a fault positioning accuracy of 100%, eliminating the need for troubleshooting steps.

[0051] Economic efficiency: Wireless transmission eliminates wiring costs, and the combination of standard spare parts reduces the cost of hardware and software upgrades by more than 90%, with the cost of a single upgrade being only 1 / 10 of that of a wired upgrade solution. Reliability: Industrial-grade general-purpose components are selected, with mature technology and stable performance.

[0052] Market prospects: (a) Competitive Advantage Compared to similar solutions in the industry, this technology has two main characteristics: Low-cost compatibility: Compatible with desulfurization towers of different specifications, with low retrofit costs and short cycles, making it suitable for large-scale promotion; Maintainability: The modular design supports plug-and-play functionality, allowing ordinary maintenance personnel to quickly get started and reducing the technical barrier to entry; (ii) Promotional value This utility model solves the operation and maintenance problems of traditional equipment through technological innovation. Practical verification shows that it has stable performance, outstanding cost advantages, and broad market application prospects. It can provide an effective reference for the upgrading of environmental protection equipment in the industry.

Claims

1. A wireless real-time monitoring ammonia lance for ease of maintenance, characterized in that, Includes a spray gun tube, one end of which is an atomizing nozzle, and the other end of which is an ammonia inlet; a flange is installed on the outside of the spray gun tube, and a quick-connect male is installed on the side of the flange near the ammonia inlet, and a quick-connect female that matches the quick-connect male is installed on the outside of the spray gun tube. The ammonia inlet is connected to an ammonia pipe, and an ammonia control valve is installed on the ammonia pipe; a differential pressure switch is installed on the ammonia pipe between the ammonia inlet and the ammonia control valve, and the differential pressure switch is connected in series with the wireless alarm via a power cord. A compressed air pipe is installed on the side of the spray gun tube near the ammonia inlet.

2. The easy-to-maintain wireless real-time monitoring ammonia spray gun according to claim 1, characterized in that, The atomizing nozzle and the spray gun pipe between the atomizing nozzle and the flange are placed inside the desulfurization / denitrification tower.

3. The wireless real-time monitoring ammonia lance for ease of maintenance as claimed in claim 1 wherein, The quick-connect female connector, ammonia inlet, and ammonia pipe are located outside the desulfurization / denitrification tower.

4. The wireless real-time monitoring ammonia lance for ease of maintenance as claimed in claim 1 wherein, The flange is located on the outside of the pipe body at the ammonia inlet in the middle of the spray gun pipe.

5. The wireless, real-time, ammonia-auger-maintenance- friendly monitoring system of claim 1, wherein, A threaded end is welded to the side of the flange near the ammonia inlet, through which a quick-connect male connector is connected.

6. The wireless, real-time, ammonia-auger-maintenance- friendly monitoring system of claim 1, wherein, A threaded end is welded to the spray gun tube body near the quick-connect male connector, through which the quick-connect female connector is connected.

7. The wireless, real-time, ammonia-auger-maintenance- friendly monitoring system of claim 1, wherein, The wireless alarm can be remotely located via a mobile app.

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