An on-line device for detecting moisture content of urea solution

Abstract

The utility model discloses a kind of urea water moisture content online detection device, by explosion-proof box, explosion-proof air conditioner and near infrared spectrum analyzer are formed;The explosion-proof box side is connected with explosion-proof air conditioner, the other side is provided with wire hole, explosion-proof box lower part is provided with observation port, upper portion is provided with connecting buckle, the upper side of the inside of explosion-proof box is provided with electrical mounting plate, the near infrared spectrum analyzer is set on electrical mounting plate, the detector of near infrared spectrum analyzer is towards observation port.Analysis detection point is in sample conveying belt top, and continuous motion measurement mode is used, timely and fast detection, without pretreatment, without other reagent consumption, without pollution, automatic online real-time detection, without manual participation and intervention.

Description

Technical Field

[0001] This utility model relates to the field of urea production, and in particular to an online detection device for urea moisture content. Background Technology

[0002] Currently, the Karl Fischer volumetric method is used in domestic laboratories to analyze the moisture content of urea products. When the analytical instrument is ready, it takes 1 hour from sampling to obtaining the result. If the instrument is not ready, additional analysis requires calibration of the instrument before sample measurement, which takes more than 2 hours. The analysis time is too long and cannot meet the real-time control needs of urea production.

[0003] By applying online rapid moisture analysis technology to the online production process, the process can be optimized and controlled based on the online moisture analysis data, achieving precise control and ensuring product quality.

[0004] The company utilizes online rapid moisture analysis technology for urea, applying it to the analysis of its production process. A measurement is completed within one minute, with a deviation of ≤0.03%. The data is consistent with laboratory analysis data. Continuous monitoring of moisture content in the urea production conveyor belts allows for timely adjustments to operating conditions based on the analysis results. This is particularly effective in high-temperature and high-humidity weather, enabling precise control and ensuring stable product quality. Summary of the Invention

[0005] To address the aforementioned problems, this utility model provides an online urea moisture content detection device, comprising an explosion-proof enclosure, an explosion-proof air conditioner, and a near-infrared spectrometer. One side of the explosion-proof enclosure is connected to the explosion-proof air conditioner, and the other side has a wire hole. An observation port is provided at the bottom of the explosion-proof enclosure, and a connecting buckle is provided at the top. An electrical mounting plate is provided on the upper side inside the explosion-proof enclosure, and the near-infrared spectrometer is mounted on the electrical mounting plate with its detector facing the observation port.

[0006] Furthermore, the observation port of the explosion-proof enclosure is surrounded by purging air nozzles, with a gap between the purging air nozzles and the observation port. An air inlet is located on one side of the gap, and an air inlet is located at one end of the purging air nozzle. The purging air nozzles are arranged in a ring shape and connected to the explosion-proof enclosure by bolts, but with a gap between them. The air inlet faces the observation port. Airflow enters the purging air nozzle from the air inlet, passes through the channel inside the purging air nozzle, and exits from the air inlet. Due to the obstruction of the gap, the airflow is directed towards the observation port.

[0007] Furthermore, the explosion-proof box is connected to a bracket via bolts, and the bracket is positioned above the urea conveyor belt. This allows for continuous measurement of samples on the urea conveyor belt.

[0008] The above-mentioned technical solution of this utility model has the following beneficial technical effects: the analysis and detection point is located at the top of the sample conveyor belt, and a continuous motion measurement method is adopted, enabling timely and rapid detection without pretreatment, other reagent consumption, or pollution; data can be tested within 1 minute. If faster results are required, the system can be adjusted as needed, achieving true online real-time detection. The urea moisture content online automatic analysis and detection system monitors the entire process automatically in real time, without requiring manual intervention; online trend data can be transmitted to the DCS system in the main control room via communication protocols, facilitating real-time monitoring and enabling timely and accurate detection of product quality. Attached Figure Description

[0009] Figure 1 This is the front view of the online urea moisture content detection device;

[0010] Figure 2 This is a bottom view of the online urea moisture content detection device;

[0011] Figure 3 This is a schematic diagram of the scavenging nozzle structure of the online urea moisture content detection device;

[0012] Figure 4 This is a top view of the scavenging nozzle of the online urea moisture content detection device;

[0013] Figure 5 This is a schematic diagram of the online urea moisture content detection device installed on the urea conveyor belt.

[0014] Figure label:

[0015] 1: Explosion-proof box; 2: Explosion-proof air conditioner; 3: Near-infrared spectrometer; 4: Wiring hole; 5: Observation port; 6: Connecting buckle; 7: Electrical mounting plate; 8: Bracket; 9: Urea conveyor belt; 10: Scavenging nozzle; 11: Air blowing port; 12: Air inlet. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0017] like Figure 1 and Figure 2As shown, an online urea moisture content detection device is provided, which consists of an explosion-proof box 1, an explosion-proof air conditioner 2, and a near-infrared spectrometer 3. One side of the explosion-proof box 1 is connected to the explosion-proof air conditioner 2, and the other side is provided with a wire hole 4. The lower part of the explosion-proof box 1 is provided with an observation port 5, and the upper part is provided with a connecting buckle 6. An electrical mounting plate 7 is provided on the upper side inside the explosion-proof box 1. The near-infrared spectrometer 3 is mounted on the electrical mounting plate 7, and the detector of the near-infrared spectrometer 3 faces the observation port 5.

[0018] like Figure 3 and Figure 4 As shown, the observation port of the explosion-proof enclosure is surrounded by purging air nozzles 10. A gap exists between the purging air nozzles 10 and the observation port. An air inlet 11 is located on one side of the gap, and an air inlet 12 is located at one end of the purging air nozzles 10. The purging air nozzles 10 are arranged in a ring shape and connected to the explosion-proof enclosure by bolts, but with a gap between them. The air inlet 11 faces the observation port. Airflow enters the purging air nozzles 10 through the air inlet 12, passes through the channel inside the purging air nozzles 10, and exits through the air inlet 11. Due to the obstruction of the gap, the airflow is directed towards the observation port. This is used to keep the observation port clean.

[0019] like Figure 5 As shown, the explosion-proof box is connected to the bracket 8 by bolts, and the bracket 8 is positioned above the urea conveyor belt 9. Samples on the urea conveyor belt can be continuously measured.

[0020] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An online urea moisture content detection device, characterized in that, It consists of an explosion-proof enclosure, an explosion-proof air conditioner, and a near-infrared spectrometer. One side of the explosion-proof enclosure is connected to the explosion-proof air conditioner, and the other side is provided with a wire hole. The lower part of the explosion-proof enclosure is provided with an observation port, and the upper part is provided with a connecting buckle. An electrical mounting plate is provided on the upper side inside the explosion-proof enclosure, and the near-infrared spectrometer is mounted on the electrical mounting plate with the detector of the near-infrared spectrometer facing the observation port.

2. The online urea moisture content detection device according to claim 1, characterized in that, The explosion-proof box has scavenging nozzles around its observation port. There is a gap between the scavenging nozzles and the observation port. An air inlet is provided on one side of the gap of the scavenging nozzles, and an air inlet is provided at one end of the scavenging nozzles.

3. The online urea moisture content detection device according to claim 1, characterized in that, The explosion-proof box is connected to the bracket by bolts, and the bracket is set above the urea conveyor belt.

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