A pH on-line monitoring device for ammonia water preparation process

Abstract

The utility model relates to ammonia water preparation technical field, concretely is a kind of ammonia water preparation process pH on -line monitoring device, including bottom plate, the bottom plate top is fixedly connected with cooling tank, the bottom plate top is fixedly connected with collection jar, cooling tank is installed with the mixing assembly of making ammonia water by mixing ammonia gas and water, cooling assembly is installed on cooling tank and carries out cooling to ammonia water, detection assembly is installed on collection jar and detects ammonia water pH value. By first pH electrode, third pH electrode and second pH electrode, the pH value of different stages in ammonia water preparation process can be monitored in real time and accurately, after detection data feedback to data processing module, solenoid valve can be regulated in real time, the mixing ratio of ammonia gas and water is accurately adjusted, and production efficiency and economic benefit are ensured.

Description

Technical Field

[0001] This utility model relates to the field of ammonia preparation technology, specifically to an online pH monitoring device for the ammonia preparation process. Background Technology

[0002] In the chemical production field, mixing ammonia gas with water is the mainstream method for preparing ammonia solution. In this process, pH value, as a key process parameter, not only directly determines the chemical properties and reactivity of the ammonia solution, but is also closely related to its effectiveness in applications such as agricultural fertilization, industrial desulfurization and denitrification, and pharmaceutical synthesis. Furthermore, pH value allows for precise calculation of ammonia solution concentration, enabling dynamic control of the ammonia-to-water mixing ratio to ensure the production of ammonia solution products that meet diverse application requirements.

[0003] However, the current industry standard for ammonia pH testing is the traditional method of manual, periodic sampling, using pH test strips or laboratory pH meters for offline analysis. However, manual testing is costly in terms of manpower and time, and the frequency is low, making it difficult to meet the real-time monitoring needs of continuous production. When fluctuations occur in the ammonia-to-water mixing ratio or abnormalities occur in the reaction system, manual testing often suffers from time lag, failing to detect and adjust the situation promptly. If the ammonia pH deviates from the target range between two manual tests, it not only leads to unstable product quality and an increased rate of defective products, but also poses safety risks such as equipment corrosion and abnormal reactions due to uncontrolled ammonia concentration, severely impacting production efficiency and economic benefits. To achieve real-time and accurate monitoring of the pH value during ammonia preparation and timely adjustment of the ammonia-to-water mixing ratio to ensure production efficiency and economic benefits, we propose an online pH monitoring device for the ammonia preparation process. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an online pH monitoring device for the ammonia water preparation process. This device can monitor the pH value in real time and accurately during the ammonia water preparation process, allowing for timely adjustment of the mixing ratio of ammonia and water to ensure production efficiency and economic benefits.

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

[0006] An online pH monitoring device for ammonia water preparation process includes a base plate, a cooling tank fixedly connected to the top of the base plate, a collection tank fixedly connected to the top of the base plate, a mixing component for mixing ammonia gas and water to produce ammonia water installed on the cooling tank, a cooling component for cooling the ammonia water installed on the cooling tank, and a detection component for detecting the pH value of the ammonia water installed on the collection tank.

[0007] The detection assembly includes a delivery pipe, which is fixedly connected to the top of the collection tank. A first pH electrode is provided on the delivery pipe, and a third pH electrode is provided at the bottom of the collection tank.

[0008] Preferably, the cooling assembly includes several sets of cooling covers, which are fixedly sleeved on the outside of the cooling tank. Several sets of cooling plates are arranged in the cooling covers. A spiral cooling pipe is installed on the cooling tank. The end of the spiral cooling pipe near the collection tank is fixedly connected to the delivery pipe. A stirring mechanism for stirring the coolant in the cooling tank is installed on the cooling tank. A cooling mechanism for maintaining the ammonia water at a low temperature is installed on the collection tank.

[0009] Preferably, the stirring mechanism includes a motor, which is fixedly installed on the top of the cooling tank. The output end of the motor is fixedly connected to a stirring rod, and several sets of stirring paddles are fixedly connected to the stirring rod.

[0010] Preferably, the cooling mechanism includes a protective cover, which is fixedly fitted outside the collection tank. A spiral cooling pipe is provided on the protective cover. A liquid extraction pipe is fixedly connected to the bottom of the cooling tank. A return pipe is fixedly connected to the side wall of the cooling tank. A liquid pump is fixedly installed on the top of the base plate. The liquid extraction end of the liquid pump is fixedly connected to the liquid extraction pipe. The liquid discharge end of the liquid pump is fixedly connected to the spiral cooling pipe. The end of the spiral cooling pipe away from the liquid pump is fixedly connected to the return pipe.

[0011] Preferably, the mixing component includes a connecting cover, which is fixedly connected to a spiral cooling pipe. A water supply pipe is fixedly connected to the left end of the connecting cover, and an air supply pipe is fixedly inserted through the top of the connecting cover. Solenoid valves are installed on both the air supply pipe and the water supply pipe. A distribution mechanism is installed on the connecting cover to ensure that ammonia and water are in full contact.

[0012] Preferably, the distribution mechanism includes a dispersion hood, which is fixedly connected to the inner wall of the connecting hood. The air supply pipe is fixedly connected to the dispersion hood. The dispersion hood has several sets of dispersion holes. Two sets of connecting discs are fixedly connected to the inner wall of the connecting hood. A rotating rod is rotatably installed between the two sets of connecting discs. Several sets of fan blades are fixedly connected to the rotating rod.

[0013] Preferably, a sliding plate is slidably connected to the inner wall of the collection tank, a sliding tube is fixedly inserted through the sliding plate, the sliding tube slidably inserts into the conveying pipe, and a buoyancy ring is fixedly connected to the bottom of the sliding plate.

[0014] Preferably, the top of the collection tank is fixedly connected to an exhaust pipe, the top of the bottom plate is fixedly connected to a water storage tank, the end of the exhaust pipe away from the collection tank is fixedly connected to the water storage tank, the exhaust pipe is provided with a number of exhaust holes, and a second pH electrode is provided on the water storage tank.

[0015] Beneficial effects

[0016] This invention provides an online pH monitoring device for ammonia preparation. Compared with the prior art, it has the following advantages:

[0017] This online pH monitoring device for ammonia preparation uses a first, third, and second pH electrode to monitor the pH value at different stages of ammonia preparation in real time and with precision. Compared to traditional manual periodic sampling and testing, it avoids the problems of time lag and low testing frequency, and can promptly detect fluctuations in the ammonia-to-water mixing ratio or abnormalities in the reaction system. After the detection data is fed back to the data processing module, the solenoid valve can be adjusted in real time to precisely adjust the ammonia-to-water mixing ratio, ensuring production efficiency and economic benefits. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the main body of this utility model;

[0019] Figure 2 This is a top view of the main structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the cooling component structure of this utility model;

[0022] Figure 5 This is an exploded view of the cross-sectional structure of the hybrid component of this utility model;

[0023] Figure 6 This is a schematic diagram of the connection structure between the conveying pipe and the sliding pipe of this utility model.

[0024] In the diagram: 1. Base plate; 2. Cooling tank; 3. Collection tank; 4. Protective cover; 5. Liquid pump; 6. Liquid extraction pipe; 7. Gas supply pipe; 8. Water supply pipe; 9. Solenoid valve; 10. Connecting cover; 11. Motor; 12. Spiral cooling pipe; 13. Delivery pipe; 14. Exhaust pipe; 15. First pH electrode; 16. Water storage tank; 17. Second pH electrode; 18. Exhaust port; 19. Stirring rod; 20. Stirring paddle; 21. Third pH electrode; 22. Spiral cooling pipe; 23. Buoyancy ring; 24. Sliding plate; 25. Sliding tube; 26. Return pipe; 27. Connecting plate; 28. Fan blade; 29. ​​Rotating rod; 30. Dispersion cover; 31. Dispersion hole; 32. Refrigeration cover. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 This utility model provides a technical solution: an online pH monitoring device for ammonia water preparation process, including a base plate 1, a cooling tank 2 fixedly connected to the top of the base plate 1, a collection tank 3 fixedly connected to the top of the base plate 1, a mixing component for mixing ammonia gas and water to make ammonia water installed on the cooling tank 2, a cooling component for cooling the ammonia water installed on the cooling tank 2, and a detection component for detecting the pH value of the ammonia water installed on the collection tank 3.

[0027] The detection assembly includes a delivery pipe 13, which is fixedly connected to the top of the collection tank 3. A first pH electrode 15 is provided on the delivery pipe 13, and a third pH electrode 21 is provided at the bottom of the collection tank 3.

[0028] In use, ammonia gas and water are mixed through a mixing component to prepare ammonia water. When ammonia gas dissolves in water, it releases a large amount of heat, causing the temperature of the ammonia water to rise. The cooling component can cool the ammonia water to keep it within a suitable temperature range, ensuring its stability. The cooled ammonia water passes through a delivery pipe 13 into a collection tank 3. The pH value of the mixed ammonia water can be detected by a first pH electrode 15, and the pH value of the ammonia water in the collection tank 3 can be detected by a third pH electrode 21. The data is fed back to the data processing module, which adjusts the mixing ratio of ammonia gas and water at the mixing component in real time to ensure production efficiency and economic benefits.

[0029] The cooling assembly includes several sets of cooling covers 32, which are fixedly fitted outside the cooling tank 2. Several sets of cooling plates are installed in the cooling covers 32. A spiral cooling pipe 12 is installed on the cooling tank 2. The end of the spiral cooling pipe 12 near the collection tank 3 is fixedly connected to the conveying pipe 13. A stirring mechanism for stirring the coolant in the cooling tank 2 is installed on the cooling tank 2. A cooling mechanism for maintaining the ammonia water at a low temperature is installed on the collection tank 3.

[0030] The coolant is stirred by the stirring mechanism, and with the cooling effect of the cooling shroud 32, the coolant is kept at a low temperature. The high-temperature ammonia water passes through the spiral cooling pipe 12, and the heat is absorbed by the coolant, so that the ammonia water is kept at a suitable temperature range.

[0031] The stirring mechanism includes a motor 11, which is fixedly installed on the top of the cooling tank 2. The output end of the motor 11 is fixedly connected to a stirring rod 19, and several sets of stirring paddles 20 are fixedly connected to the stirring rod 19.

[0032] The motor 11 is started to drive the stirring rod 19 to rotate, which in turn drives the stirring paddle 20 to rotate, thus stirring the coolant.

[0033] The cooling mechanism includes a protective cover 4, which is fixedly fitted outside the collection tank 3. A spiral cooling pipe 22 is installed on the protective cover 4. A liquid extraction pipe 6 is fixedly connected to the bottom of the cooling tank 2. A return pipe 26 is fixedly connected to the side wall of the cooling tank 2. A liquid pump 5 is fixedly installed on the top of the base plate 1. The liquid extraction end of the liquid pump 5 is fixedly connected to the liquid extraction pipe 6. The liquid discharge end of the liquid pump 5 is fixedly connected to the spiral cooling pipe 22. The end of the spiral cooling pipe 22 away from the liquid pump 5 is fixedly connected to the return pipe 26.

[0034] Start the liquid pump 5 to allow the coolant in the cooling tank 2 to enter the spiral cooling pipe 22 through the liquid extraction pipe 6, and then return to the cooling tank 2 through the return pipe 26. The coolant circulating in the spiral cooling pipe 22 lowers the temperature of the ammonia water in the collection tank 3, keeping the ammonia water at a low temperature.

[0035] The mixing assembly includes a connecting cover 10, which is fixedly connected to the spiral cooling pipe 12. A water supply pipe 8 is fixedly connected to the left end of the connecting cover 10. An air supply pipe 7 is fixedly installed on the top of the connecting cover 10. Solenoid valves 9 are installed on both the air supply pipe 7 and the water supply pipe 8. A distribution mechanism is installed on the connecting cover 10 to ensure that ammonia and water are in full contact.

[0036] Water is introduced through water supply pipe 8, and ammonia is introduced through gas supply pipe 7. Under the action of the distribution mechanism, ammonia and water come into full contact, and ammonia dissolves in water to form ammonia water. Based on the pH value detected by the first pH electrode 15 and the third pH electrode 21, the data processing module can adjust the flow rate of water and ammonia by controlling the solenoid valve 9, thereby adjusting the mixing ratio of ammonia and water.

[0037] The distribution mechanism includes a dispersion cover 30, which is fixedly connected to the inner wall of the connecting cover 10. The air supply pipe 7 is fixedly connected to the dispersion cover 30. Several sets of dispersion holes 31 are opened on the dispersion cover 30. Two sets of connecting discs 27 are fixedly connected to the inner wall of the connecting cover 10. A rotating rod 29 is rotatably installed between the two sets of connecting discs 27. Several sets of fan blades 28 are fixedly connected to the rotating rod 29.

[0038] After ammonia enters the dispersion hood 30, it is sprayed out from multiple dispersion holes 31, and comes into contact with and mixes with water from multiple directions. At the same time, the fan blades 28 rotate under the action of water flow, which plays a certain role in stirring, making the mixing more uniform and thorough.

[0039] A sliding plate 24 is slidably connected to the inner wall of the collection tank 3. A sliding tube 25 is fixedly inserted through the sliding plate 24. The sliding tube 25 is slidably inserted through the inlet conveying pipe 13. A buoyancy ring 23 is fixedly connected to the bottom of the sliding plate 24.

[0040] After passing through the conveying pipe 13, the ammonia water flows out through the sliding pipe 25. As the amount of ammonia water in the collection tank 3 increases, the sliding plate 24 drives the sliding pipe 25 to gradually rise under the action of the buoyancy ring 23. This can prevent the ammonia water from falling directly from a high place and prevent the ammonia gas from escaping due to the impact. The sliding plate 24 can also block a small amount of ammonia gas from escaping, allowing the ammonia gas to dissolve back into the water.

[0041] The top of the collection tank 3 is fixedly connected to an exhaust pipe 14, and the top of the bottom plate 1 is fixedly connected to a water storage tank 16. The end of the exhaust pipe 14 away from the collection tank 3 is fixedly connected to the water storage tank 16. Several sets of exhaust holes 18 are opened on the exhaust pipe 14, and a second pH electrode 17 is provided on the water storage tank 16.

[0042] As the sliding plate 24 rises, the air in the collection tank 3 is discharged through the exhaust port 18 on the exhaust pipe 14. If there is a small amount of ammonia gas, it can be absorbed by the water in the water storage tank 16 to prevent ammonia gas from leaking out. The pH value of the water in the water storage tank 16 can be monitored in real time by the second pH electrode 17 to determine the ammonia gas leakage situation.

[0043] Working Principle: During the ammonia preparation process, water and ammonia gas enter the connecting shroud 10 through the water supply pipe 8 and the gas supply pipe 7, respectively. The ammonia gas is dispersed through the dispersion holes 31 of the dispersion shroud 30, and the water flow drives the fan blades 28 to rotate and stir, fully mixing within the connecting shroud 10 to form ammonia water. Because ammonia dissolves in water and releases heat, the temperature of the ammonia water rises, and it then flows into the spiral cooling pipe 12 of the cooling tank 2. The motor 11 drives the stirring rod 19 and the stirring paddle 20 to agitate the coolant, and the cooling plates in the cooling shroud 32 simultaneously cool, achieving effective cooling of the ammonia water. When the cooled ammonia water flows through the delivery pipe 13, the first pH electrode 15 performs the initial pH value detection, and then it flows into the collection tank 3. As the amount of ammonia water increases, the buoyancy ring 23 pushes the sliding plate 24 upward, causing the sliding pipe 25 to move upward synchronously, preventing ammonia gas from escaping due to the high drop impact of the ammonia water. The sliding plate 24 also blocks a small amount of escaping ammonia gas, promoting its redissolution. The pH value of the ammonia water in the collection tank 3 is detected by the third pH electrode 21. Simultaneously, the liquid pump 5 starts, causing the coolant in the cooling tank 2 to flow through the suction pipe 6 into the spiral cooling pipe 22 on the outer protective cover 4 of the collection tank 3. After continuously cooling the ammonia water in the collection tank 3, it flows back to the cooling tank 2 through the return pipe 26. The air and a small amount of escaped ammonia gas in the collection tank 3 enter the water storage tank 16 through the exhaust port 18 of the exhaust pipe 14. The ammonia gas is absorbed by the water in the tank. The second pH electrode 17 monitors the pH value of the water in the water storage tank 16 in real time to determine the ammonia gas escape status. Finally, the first pH electrode 15, the third pH electrode 21, and the second pH electrode 17 feed the detection data back to the data processing module.

[0044] The ammonia emission status is determined based on the data detected by the first pH electrode 15, the third pH electrode 21, and the second pH electrode 17. The data processing module then adjusts the solenoid valve 9 in real time to precisely adjust the mixing ratio of ammonia and water, ensuring the high efficiency and economic benefits of ammonia preparation.

[0045] The specific data processing module and valve control method adopt conventional methods and will not be described here; achieving the above objectives is sufficient.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online pH monitoring device for ammonia water preparation process, comprising a base plate (1), characterized in that: A cooling tank (2) is fixedly connected to the top of the base plate (1), and a collection tank (3) is fixedly connected to the top of the base plate (1). A mixing component for mixing ammonia gas and water to make ammonia water is installed on the cooling tank (2). A cooling component for cooling ammonia water is installed on the cooling tank (2). A detection component for detecting the pH value of ammonia water is installed on the collection tank (3). The detection assembly includes a delivery tube (13), which is fixedly connected to the top of the collection tank (3). A first pH electrode (15) is provided on the delivery tube (13), and a third pH electrode (21) is provided at the bottom of the collection tank (3).

2. The pH online monitoring device for ammonia water preparation process according to claim 1, characterized in that: The cooling assembly includes several sets of cooling covers (32), which are fixedly sleeved on the outside of the cooling tank (2). Several sets of cooling plates are provided in the cooling covers (32). A spiral cooling pipe (12) is installed on the cooling tank (2). One end of the spiral cooling pipe (12) near the collection tank (3) is fixedly connected to the conveying pipe (13). A stirring mechanism for stirring the coolant in the cooling tank (2) is installed on the cooling tank (2). A cooling mechanism for maintaining the ammonia water at a low temperature is installed on the collection tank (3).

3. The pH online monitoring device for ammonia water preparation process according to claim 2, characterized in that: The stirring mechanism includes a motor (11), which is fixedly installed on the top of the cooling tank (2). The output end of the motor (11) is fixedly connected to a stirring rod (19), and several sets of stirring paddles (20) are fixedly connected to the stirring rod (19).

4. The pH online monitoring device for ammonia water preparation process according to claim 2, characterized in that: The cooling mechanism includes a protective cover (4), which is fixedly fitted outside the collection tank (3). A spiral cooling pipe (22) is provided on the protective cover (4). A liquid extraction pipe (6) is fixedly connected to the bottom of the cooling tank (2). A return pipe (26) is fixedly connected to the side wall of the cooling tank (2). A liquid pump (5) is fixedly installed on the top of the base plate (1). The liquid extraction end of the liquid pump (5) is fixedly connected to the liquid extraction pipe (6). The liquid discharge end of the liquid pump (5) is fixedly connected to the spiral cooling pipe (22). The end of the spiral cooling pipe (22) away from the liquid pump (5) is fixedly connected to the return pipe (26).

5. The pH online monitoring device for ammonia water preparation process according to claim 1, characterized in that: The mixing assembly includes a connecting cover (10), which is fixedly connected to a spiral cooling pipe (12). A water supply pipe (8) is fixedly connected to the left end of the connecting cover (10). An air supply pipe (7) is fixedly installed on the top of the connecting cover (10). Solenoid valves (9) are installed on both the air supply pipe (7) and the water supply pipe (8). A distribution mechanism to ensure sufficient contact between ammonia and water is installed on the connecting cover (10).

6. The pH online monitoring device for ammonia water preparation process according to claim 5, characterized in that: The distribution mechanism includes a dispersion cover (30), which is fixedly connected to the inner wall of the connecting cover (10). The air supply pipe (7) is fixedly connected to the dispersion cover (30). The dispersion cover (30) has several sets of dispersion holes (31). The inner wall of the connecting cover (10) is fixedly connected to two sets of connecting discs (27). A rotating rod (29) is rotatably installed between the two sets of connecting discs (27). Several sets of fan blades (28) are fixedly connected to the rotating rod (29).

7. The pH online monitoring device for ammonia water preparation process according to claim 1, characterized in that: The inner wall of the collection tank (3) is slidably connected to a sliding plate (24), a sliding tube (25) is fixedly inserted through the sliding plate (24), the sliding tube (25) is slidably inserted through the inlet conveying pipe (13), and a buoyancy ring (23) is fixedly connected to the bottom of the sliding plate (24).

8. The pH online monitoring device for ammonia water preparation process according to claim 1, characterized in that: The top of the collection tank (3) is fixedly connected to an exhaust pipe (14), and the top of the bottom plate (1) is fixedly connected to a water storage tank (16). The end of the exhaust pipe (14) away from the collection tank (3) is fixedly connected to the water storage tank (16). Several sets of exhaust holes (18) are opened on the exhaust pipe (14), and a second pH electrode (17) is provided on the water storage tank (16).

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