A urea hydrolyzer solution sampling device

Abstract

This utility model discloses a urea hydrolyzer solution sampling device, belonging to the field of urea sampling technology. It includes a urea hydrolyzer and a sampling bottle. A connecting sleeve is provided above the sampling bottle, and the connecting sleeve has an internal cavity with a sliding baffle inside. A driving component is installed on the top surface of the connecting sleeve, driving the baffle to move vertically. A conical hole is opened on the bottom surface of the cavity, and a valve core is installed on the bottom surface of the baffle, which can seal the conical hole. Flanges are installed at both ends of the connecting sleeve, one of which is connected to a urea hydrolyzer via a urea hydrolysate sampling tube, which is connected to a pair of valves. A connecting frame is installed on the top surface of the sampling bottle, and a sealing film is installed inside the connecting frame. The bottom surface of the conical hole is connected to the sampling tube. A purge tube is also installed on the side of the connecting sleeve, with one end connected to the sampling tube and the other end connected to a one-way valve. An ammonia absorber is also provided outside the sampling bottle, connected to the sampling bottle.

Description

Technical Field

[0001] This utility model relates to the field of urea sampling technology, specifically a urea hydrolyzer solution sampling device. Background Technology

[0002] In industries such as thermal power generation and chemical processing, urea hydrolyzers are key devices that decompose urea solution by heating to produce ammonia, providing a reducing agent for denitrification systems. To ensure urea hydrolysis efficiency and denitrification effects, it is necessary to periodically sample and analyze the urea hydrolysate within the hydrolyzer, detecting key indicators such as urea concentration and ammonia content in the solution, thereby adjusting the hydrolyzer's operating parameters. Currently, the commonly used urea hydrolysate sampling method in the industry is based on conventional pipeline sampling logic. The sampling tube is usually connected to the drain pipe on the surface of the hydrolyzer, and the operation is carried out using a sampling bottle with a breather valve and a high-temperature resistant hose. However, this sampling method has significant drawbacks in practical applications and cannot meet the requirements for safe and accurate sampling.

[0003] When sampling urea hydrolysate, dissolved ammonia gas is released during the sampling process. Although existing sampling devices are equipped with a breathing valve, this valve can only balance the air pressure inside and outside the sampling bottle and cannot prevent ammonia gas from leaking through gaps such as hose joints and bottle cap threads. Ammonia gas is highly irritating and leaks can damage the respiratory tract and eyes of operators. Therefore, special gas masks must be worn during sampling, which not only increases the complexity of the operation but also poses a risk of poisoning due to improper protection, failing to meet the requirements for safe production. Secondly, when the urea hydrolyzer is running, the hydrolysate temperature is usually maintained at 120-150℃. The temperature rises synchronously when the sampling tube comes into direct contact with the solution. During the sampling process, operators need to manually adjust the valve, exposing high-temperature components directly, which can easily lead to burns due to accidental contact. Finally, to avoid damage to the testing instrument from high-concentration hydrolysate, the existing sampling method requires adding 500mL of reagent water to the sampling bottle beforehand and then collecting 100mL of hydrolysate to mix and dilute before forming the sample solution. The dilution process has two major problems: First, the dilution ratio is fixed and cannot be flexibly adjusted according to the actual concentration of the hydrolysate, which may lead to over-dilution of low-concentration components and affect the detection limit. Second, local uneven concentration is easily generated when the hydrolysate is mixed with the reagent water, and incomplete rinsing of the sampling pipeline may leave residues of the previous sample, further interfering with the detection results. As a result, the analytical data cannot truly reflect the actual state of the solution in the hydrolyzer, affecting the accuracy of subsequent operating parameter adjustments. Utility Model Content

[0004] The purpose of this invention is to provide a urea hydrolyzer solution sampling device to solve the problems mentioned in the background art.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0006] A urea hydrolyzer solution sampling device includes a urea hydrolyzer and a sampling bottle. A connecting sleeve is provided above the sampling bottle. The connecting sleeve has an internal cavity with a sliding baffle inside. A driving component is installed on the top surface of the connecting sleeve, driving the baffle to move vertically. A conical hole is formed on the bottom surface of the cavity. A valve core is installed on the bottom surface of the baffle, sealing the conical hole. Flanges are installed at both ends of the connecting sleeve. A urea hydrolysate sampling tube is connected between one flange and the urea hydrolyzer, and the urea hydrolysate sampling tube is connected to a pair of valves. A connecting frame is installed on the top surface of the sampling bottle, with a sealing film installed inside the connecting frame. The connecting sleeve is installed on the top surface of the connecting frame. The bottom surface of the conical hole is connected to the sampling tube. The bottom end of the sampling tube penetrates the sealing film and extends into the sampling bottle. A purge tube is also installed on the side of the connecting sleeve, with one end connected to the sampling tube. The other end of the sweeping tube is connected to a one-way valve. An ammonia absorber is also installed on the outside of the sampling bottle. The ammonia absorber is connected to the sampling bottle. The drive unit, in conjunction with the baffle and valve core, can precisely control the opening and closing of the conical orifice, enabling flexible start and stop of the sampling process and preventing the hydrolysate from flowing out arbitrarily. The flanges at both ends of the connecting sleeve, in conjunction with the urea hydrolysate sampling tube, ensure the sealing of the connection between the sampling tube and the urea hydrolyzer, reducing the risk of hydrolysate leakage. The sealing film inside the connecting frame, in conjunction with the sampling tube, maintains the sealing of the sampling bottle after the sampling tube has passed through, preventing external impurities from entering or internal gas from leaking. The purging tube, in conjunction with the one-way valve, allows depressurized ammonia to be introduced into the sampling tube to purge the pipeline, preventing residual previous sampling liquid from interfering with subsequent testing. The ammonia absorber, sealing film, and sampling bottle work together to absorb the ammonia released during the sampling process, preventing ammonia leakage from harming the operator's health, thus achieving safe and accurate sampling.

[0007] Furthermore, the driving component includes a fixed sleeve mounted on the top surface of the connecting sleeve. The fixed sleeve has a sliding cavity inside, which is connected to the cavity. The baffle slides within the sliding cavity. A handwheel is rotatably connected to the top surface of the fixed sleeve, and a threaded rod is rotatably connected to the top surface of the sliding cavity. The handwheel and the threaded rod are coaxially connected, and the baffle and the threaded rod are threadedly engaged. The sliding cavity of the fixed sleeve provides a stable sliding track for the baffle, ensuring that the baffle will not deviate when moving vertically. The handwheel and the threaded rod are coaxially connected, and the threaded rod is threadedly engaged with the baffle. By rotating the handwheel, the operator can drive the baffle to move precisely through the threaded rod, thereby controlling the sealing degree of the valve core to the tapered orifice and achieving precise adjustment of the sampling flow rate. This avoids the problem of inaccurate sampling due to difficulty in controlling the flow rate by manually adjusting the valve.

[0008] Furthermore, the baffle and the sliding cavity are fitted together, and a sealing strip is installed on the side of the baffle. The baffle can seal the cavity, and the fit between the baffle and the sliding cavity reduces the gap between the baffle and the sliding cavity, preventing the hydrolysate in the cavity of the connecting sleeve from seeping into the sliding cavity through the gap. The sealing strip installed on the side of the baffle further enhances the sealing effect and avoids hydrolysate leakage. At the same time, the baffle can seal the cavity, and when sampling is completed or needs to be paused, it can prevent the hydrolysate from continuing to flow into the cavity, preventing hydrolysate waste or leakage, and ensuring the controllability and sealing of the sampling process.

[0009] Furthermore, the valve core is made of rubber, and the valve core and the conical orifice are interference-fitted. The valve core is made of rubber, which has good elasticity and sealing properties, and can fit tightly with the conical orifice. At the same time, the interference fit between the valve core and the conical orifice further enhances the sealing effect between the two, preventing the hydrolysate from leaking from the fit between the valve core and the conical orifice. This ensures that the hydrolysate can flow into the sampling tube through the open conical orifice during the sampling process, thereby improving the sealing reliability of the sampling device.

[0010] Furthermore, the ammonia absorption component includes an ammonia absorption bottle containing clean water. The ammonia absorption component also includes a pair of exhaust pipes connected by a vent valve. The free end of one exhaust pipe penetrates the sealing film and extends into the sampling bottle, while the free end of the other exhaust pipe is located inside the ammonia absorption bottle and submerged in clean water. The clean water in the ammonia absorption bottle can react with the ammonia, absorbing it. The pair of exhaust pipes connect the sampling bottle and the ammonia absorption bottle respectively, providing a channel for ammonia flow, allowing ammonia released from the sampling bottle to enter the clean water in the ammonia absorption bottle through the exhaust pipes. The vent valve connecting the exhaust pipes controls the ammonia flow path; it can be closed to block ammonia flow or opened to adjust the ammonia flow rate when needed. Through the cooperation of these components, ammonia leakage during sampling can be effectively prevented, avoiding health hazards to operators from inhaling ammonia and meeting the requirements for safe production operations.

[0011] Furthermore, both the sampling bottle and the ammonia absorption bottle are made of transparent material, allowing operators to directly observe the amount of hydrolysate sampled inside the bottle. This facilitates control of the sampling volume and prevents excessive or insufficient sampling from affecting subsequent testing. The transparent material of the ammonia absorption bottle allows observation of the ammonia absorption process by the water inside, making it easier to judge the ammonia absorption effect and replace the water in a timely manner to ensure absorption efficiency and effective treatment of ammonia.

[0012] Furthermore, an L-shaped support is provided on the outside of the sampling bottle. The sampling bottle is placed on the top surface of the horizontal plate of the L-shaped support. A limiting sleeve is installed on the side of the vertical plate of the L-shaped support. The sampling bottle passes through the limiting sleeve. The horizontal plate of the L-shaped support provides a stable support surface for the sampling bottle, preventing the sampling bottle from tipping over during sampling. The limiting sleeve on the side of the vertical plate cooperates with the sampling bottle to limit the sampling bottle, preventing the sampling bottle from moving horizontally on the horizontal plate, ensuring that the sampling tube is always kept in the correct position inside the sampling bottle, preventing the sampling tube from detaching or being damaged due to the movement of the sampling bottle, and ensuring the stability of the sampling process.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the cooperation of the ammonia absorption element and the sampling bottle, the ammonia gas released in the sampling bottle enters the clean water in the ammonia absorption bottle through the exhaust pipe and is absorbed. At the same time, the sealing film in the connecting frame enhances the sealing of the sampling bottle, effectively preventing ammonia gas from leaking from the gaps, avoiding the health hazards of operators inhaling ammonia gas, eliminating the need to rely on special gas masks, reducing the complexity of operation, and meeting the requirements for safe production operations.

[0015] Second, the drive unit in the device can remotely control the movement of the baffle and valve core to open and close the conical orifice. Operators do not need to directly contact the high-temperature sampling tube and hydrolysate. At the same time, a pair of valves on the urea hydrolysate sampling tube can help control the flow of hydrolysate, avoiding burns caused by accidental contact with high-temperature components and improving operational safety.

[0016] Thirdly, on the one hand, the purge tube, in conjunction with the one-way valve, can purge the sampling tube to remove any residual previous samples from the pipeline, thus avoiding cross-contamination; on the other hand, the drive unit can precisely control the opening and closing of the conical orifice, adjusting the sampling flow rate and sampling volume. Operators can flexibly control the sampling volume according to the actual hydrolysate concentration, and then observe the sampling volume using a transparent sampling bottle, thereby directly sampling within the system without the need for dilution, ensuring that the sample is representative. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the urea hydrolyzer solution sampling device disclosed in an embodiment of the present utility model;

[0018] Figure 2 This is a first side view of the urea hydrolyzer solution sampling device disclosed in an embodiment of the present invention.

[0019] Figure 3 This is a second side view of the urea hydrolyzer solution sampling device disclosed in an embodiment of the present invention.

[0020] Figure 4 This is a cross-sectional structural schematic diagram of the urea hydrolyzer solution sampling device disclosed in an embodiment of this utility model;

[0021] Figure 5 for Figure 4 A magnified schematic diagram of structure A in the middle.

[0022] In the diagram: 1. Sampling bottle; 2. Ammonia absorption bottle; 3. Connecting sleeve; 4. Flange; 5. Fixing sleeve; 6. Handwheel; 7. Purge pipe; 8. Check valve; 9. L-shaped support bracket; 10. Limiting sleeve; 11. Exhaust pipe; 12. Vent valve; 13. Baffle; 14. Threaded rod; 15. Valve core; 16. Tapered hole; 17. Sampling tube; 18. Sealing film; 19. Connecting frame. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-5This utility model provides a technical solution: a urea hydrolyzer solution sampling device, including a urea hydrolyzer and a sampling bottle 1. A connecting sleeve 3 is provided above the sampling bottle 1. The connecting sleeve 3 has a cavity inside, and a baffle 13 slides inside the cavity. A driving component is installed on the top surface of the connecting sleeve 3, which drives the baffle 13 to move vertically. A conical hole 16 is opened on the bottom surface of the cavity. A valve core 15 is installed on the bottom surface of the baffle 13, and the valve core 15 can seal the conical hole 16. Flanges 4 are installed at both ends of the connecting sleeve 3, and a urea hydrolyzer sampler is connected between one of the flanges 4 and the urea hydrolyzer. The sampling bottle 1 has a urea hydrolysate sampling tube connected to a pair of valves. A connecting frame 19 is installed on the top surface of the sampling bottle 1, and a sealing film 18 is installed inside the connecting frame 19. A connecting sleeve 3 is installed on the top surface of the connecting frame 19. A sampling tube 17 is connected to the bottom surface of the conical hole 16. The bottom end of the sampling tube 17 passes through the sealing film 18 and extends into the interior of the sampling bottle 1. A purge tube 7 is also installed on the side of the connecting sleeve 3. One end of the purge tube 7 is connected to the sampling tube 17, and the other end of the purge tube 7 is connected to a one-way valve 8. An ammonia absorption element is also provided on the outside of the sampling bottle 1, and the ammonia absorption element is connected to the sampling bottle 1. (The last sentence appears to be incomplete and possibly refers to a different product.) Close the pair of valves on the urea hydrolysate sampling tube. Connect one flange 4 to the urea hydrolysate sampling tube connected to the urea hydrolyzer via flanges 4 at both ends of the connecting sleeve 3, and connect the other flange 4 to a collection tank or other collection dish, ensuring a tight connection. Then, operate the drive mechanism on the top surface of the connecting sleeve 3. The drive mechanism moves the baffle 13 vertically upwards, causing the valve core 15 on the bottom surface of the baffle 13 to move upwards, disengaging from the seal on the conical orifice 16. Then, open the pair of valves on the urea hydrolysate sampling tube. The urea hydrolysate in the urea hydrolyzer flows into the cavity of the connecting sleeve 3 through the sampling tube. The sample then enters the sampling tube 17 through the conical hole 16 and flows into the sampling bottle 1 to complete the sampling. After sampling, the valve on the urea hydrolysate sampling tube is closed, and the driving component is operated to move the baffle 13 and the valve core 15 downward, so that the valve core 15 re-seals the conical hole 16. If it is necessary to clean the sampling tube 17, the depressurized ammonia gas can be introduced through the one-way valve 8 at the other end of the purge tube 7. The ammonia gas enters the sampling tube 17 through the purge tube 7 to purge the hydrolysate remaining in the pipeline. During this process, the ammonia gas released in the sampling bottle 1 is absorbed and treated by the ammonia gas absorber connected to the sampling bottle 1.

[0025] As one embodiment of this utility model, the driving component further includes a fixed sleeve 5 mounted on the top surface of the connecting sleeve 3. The fixed sleeve 5 has a sliding cavity inside, and the cavity and the sliding cavity are connected. The baffle 13 slides in the sliding cavity. A handwheel 6 is rotatably connected to the top surface of the fixed sleeve 5, and a threaded rod 14 is rotatably connected to the top surface of the sliding cavity. The handwheel 6 and the threaded rod 14 are coaxially connected, and the baffle 13 and the threaded rod 14 are threadedly engaged. When it is necessary to drive the baffle 13 to move, the operator first grasps the top surface of the fixed sleeve 5. Handwheel 6 can be rotated clockwise or counterclockwise. Since handwheel 6 is coaxially connected to the threaded rod 14 that is rotatably connected to the top surface of the slide cavity, the rotation of handwheel 6 will drive the threaded rod 14 to rotate synchronously. Since the baffle 13 is threadedly engaged with the threaded rod 14 and the baffle 13 slides in the slide cavity of the fixed sleeve 5, the rotation of the threaded rod 14 will be converted into the vertical movement of the baffle 13 along the slide cavity, thereby realizing the position adjustment of the baffle 13 and the bottom valve core 15, and achieving the purpose of controlling the opening and closing of the tapered hole 16 and the degree of opening and closing.

[0026] As an embodiment of this utility model, the baffle 13 and the sliding cavity are fitted together, and a sealing strip is installed on the side of the baffle 13. The baffle 13 can block the cavity. During the movement of the baffle 13 along the sliding cavity of the fixed sleeve 5, since the baffle 13 and the sliding cavity are fitted together, the gap between them is extremely small, which can initially block the hydrolysate in the cavity of the connecting sleeve 3 from entering the sliding cavity. The sealing strip on the side of the baffle 13 will fit tightly against the inner wall of the sliding cavity, further filling any possible tiny gaps and completely preventing the hydrolysate from seeping into the sliding cavity. When it is necessary to block the cavity, the driving component drives the baffle 13 to move down to fit against the top surface of the cavity of the connecting sleeve 3. At this time, the baffle 13 completely covers the cavity, blocking the flow of the hydrolysate in the cavity, thereby blocking the cavity and achieving the effect of pausing or ending the sampling.

[0027] As an embodiment of this utility model, the valve core 15 is made of rubber, and the valve core 15 and the conical hole 16 are interference-fitted. When the driving member moves the baffle 13 downward, the rubber valve core 15 on the bottom surface of the baffle 13 will gradually approach the conical hole 16 on the bottom surface of the cavity of the connecting sleeve 3. As the baffle 13 continues to move downward, the valve core 15 will be embedded in the conical hole 16. Due to the interference fit between the valve core 15 and the conical hole 16, and the elasticity of the rubber material, the valve core 15 will undergo slight deformation in the conical hole 16, tightly filling the inner wall of the conical hole 16, forming a good sealing structure, and preventing the hydrolysate from passing through the conical hole 16. When the driving member moves the baffle 13 upward, the valve core 15 is dislodged from the conical hole 16, the conical hole 16 opens, and the hydrolysate can pass smoothly.

[0028] As an embodiment of this utility model, the ammonia absorption element further includes an ammonia absorption bottle 2, and the ammonia absorption bottle 2 is filled with clean water. The ammonia absorption element also includes a pair of exhaust pipes 11, and a vent valve 12 is connected between the pair of exhaust pipes 11. The free end of one exhaust pipe 11 passes through the sealing film 18 and extends into the sampling bottle 1, while the free end of the other exhaust pipe 11 is located inside the ammonia absorption bottle 2 and is submerged in clean water. During the purging process, the vent valve 12 between the pair of exhaust pipes 11 is opened; because As the ammonia concentration in sampling bottle 1 gradually increases, a pressure difference is created. The ammonia gas flows out through the vent pipe 11, which penetrates the sealing membrane 18 and extends into the sampling bottle 1. After passing through the connected vent valve 12, it enters the vent pipe 11 at the other end, which is located in the ammonia absorption bottle 2 and is submerged in clean water. When clean water is introduced through the vent pipe 11, the ammonia gas reacts with the water and is absorbed, thus preventing the ammonia gas from leaking into the air. When sampling is completed or ammonia absorption is no longer needed, the vent valve 12 is closed to stop the flow of ammonia gas in the vent pipe 11.

[0029] As an embodiment of this utility model, both the sampling bottle 1 and the ammonia absorption bottle 2 are made of transparent material. During the sampling process, the operator can clearly see the changes in the liquid level of the hydrolysate in the bottle through the transparent sampling bottle 1. When the liquid level reaches the required sampling amount, the operator can promptly control the drive component to close the conical orifice 16 and stop sampling. At the same time, the changes in the clear water released by the exhaust pipe 11 can be observed through the transparent ammonia absorption bottle 2, so that the clear water in the ammonia absorption bottle 2 can be replaced in time to ensure the continuous and effective absorption of ammonia.

[0030] As an embodiment of this utility model, the sampling bottle 1 is further provided with an L-shaped support 9 on its outer side. The sampling bottle 1 is placed on the top surface of the horizontal plate of the L-shaped support 9. A limiting sleeve 10 is installed on the side of the vertical plate of the L-shaped support 9. The sampling bottle 1 passes through the limiting sleeve 10. When installing the sampling bottle 1, the sampling bottle 1 is first passed through the limiting sleeve 10 on the side of the vertical plate of the L-shaped support 9, so that the bottom of the sampling bottle 1 is placed on the top surface of the horizontal plate of the L-shaped support 9. The limiting sleeve 10 will constrain the sampling bottle 1 from the side, restricting the horizontal movement of the sampling bottle 1. The horizontal plate supports the sampling bottle 1 from the bottom and bears the weight of the sampling bottle 1 and the internal hydrolysate. During the entire sampling process, the L-shaped support 9 and the limiting sleeve 10 work together to maintain the stability of the sampling bottle 1 and ensure that the sampling operation proceeds smoothly.

[0031] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

Claims

1. A urea hydrolyzer solution sampling device, characterized in that, The device includes a urea hydrolyzer and a sampling bottle (1). A connecting sleeve (3) is provided above the sampling bottle (1). The connecting sleeve (3) has a cavity inside, and a baffle (13) slides inside the cavity. A driving component is installed on the top surface of the connecting sleeve (3), and the driving component drives the baffle (13) to move vertically. A conical hole (16) is opened on the bottom surface of the cavity. A valve core (15) is installed on the bottom surface of the baffle (13), and the valve core (15) can seal the conical hole (16). Flanges (4) are installed at both ends of the connecting sleeve (3). A urea hydrolysate sampling tube is connected between one of the flanges (4) and the urea hydrolyzer, and the urea hydrolysate sampling tube is connected to a pair of valves. A connecting frame (19) is installed on the top surface of the sampling bottle (1), and a sealing film (18) is installed inside the connecting frame (19). The connecting sleeve (3) is installed on the top surface of the connecting frame (19). The bottom surface of the conical hole (16) is connected to the sampling tube (17). The bottom end of the sampling tube (17) passes through the sealing film (18) and extends into the sampling bottle (1). A purge tube (7) is also installed on the side of the connecting sleeve (3). One end of the purge tube (7) is connected to the sampling tube (17), and the other end of the purge tube (7) is connected to a one-way valve (8). An ammonia absorption element is also provided on the outside of the sampling bottle (1). The ammonia absorption element is connected to the sampling bottle (1).

2. The urea hydrolyzer solution sampling device according to claim 1, characterized in that, The driving component includes a fixed sleeve (5) installed on the top surface of the connecting sleeve (3). The fixed sleeve (5) has a sliding cavity inside, and the cavity and the sliding cavity are connected. The baffle (13) slides in the sliding cavity. A handwheel (6) is rotatably connected to the top surface of the fixed sleeve (5). A threaded rod (14) is rotatably connected to the top surface of the sliding cavity. The handwheel (6) and the threaded rod (14) are coaxially connected. The baffle (13) and the threaded rod (14) are threadedly engaged.

3. The urea hydrolyzer solution sampling device according to claim 2, characterized in that, The baffle (13) fits into the sliding cavity, and a sealing strip is installed on the side of the baffle (13), which can seal the cavity.

4. The urea hydrolyzer solution sampling device according to claim 1, characterized in that, The valve core (15) is made of rubber, and the valve core (15) and the tapered hole (16) are interference fit.

5. A urea hydrolyzer solution sampling device according to claim 1, characterized in that, The ammonia absorption device includes an ammonia absorption bottle (2), and the ammonia absorption bottle (2) is filled with clean water. The ammonia absorption device also includes a pair of exhaust pipes (11), and an air vent valve (12) is connected between the pair of exhaust pipes (11). The free end of one of the exhaust pipes (11) passes through the sealing film (18) and extends into the sampling bottle (1). The free end of the other exhaust pipe (11) is located inside the ammonia absorption bottle (2) and is submerged in clean water.

6. A urea hydrolyzer solution sampling device according to claim 5, characterized in that, Both the sampling bottle (1) and the ammonia absorption bottle (2) are made of transparent material.

7. A urea hydrolyzer solution sampling device according to claim 1, characterized in that, The sampling bottle (1) is provided with an L-shaped support (9) on the outside. The sampling bottle (1) is placed on the top surface of the horizontal plate of the L-shaped support (9). A limiting sleeve (10) is installed on the side of the vertical plate of the L-shaped support (9). The sampling bottle (1) passes through the limiting sleeve (10).

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