Safety treatment system for ammonia leakage

Abstract

The utility model discloses an ammonia leakage safety treatment system, which comprises an ammonia storage cabinet, an ammonia storage container, an ammonia leakage detection device, an ammonia leakage detection device and an ammonia leakage detection device, the spraying module comprises a liquid storage tank and a spraying head which are communicated with each other, and absorption liquid is stored in the liquid storage tank; wherein the absorption liquid comprises sodium bicarbonate; the monitoring module comprises an ammonia concentration sensor and a pH value sensor which are respectively arranged in the ammonia storage cabinet; the control module is respectively connected with the spraying module and the monitoring module; the control module is used for receiving information, collected by the ammonia concentration sensor, of ammonia leaked from the ammonia storage cabinet and controlling the spraying head to spray absorption liquid; and the controller is used for receiving the pH value information of the absorption liquid after ammonia gas absorption collected by the pH value sensor, and controlling the spray header to stop spraying the absorption liquid. The ammonia leakage treatment device solves the problems of waste of ammonia absorption liquid, low treatment efficiency and high treatment cost in the existing ammonia leakage treatment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ammonia leakage treatment, specifically relates to a kind of ammonia leakage safety treatment system. BACKGROUND

[0002] Liquid ammonia is widely used as chemical raw materials and hydrogen storage medium. Liquid ammonia is a gas with strong irritating odor, flammable, explosive and toxic. Small-scale indoor use usually uses liquid ammonia cylinder. During storage and use, ammonia leakage may cause serious safety accidents, including poisoning, suffocation, even fire and explosion accidents, environmental pollution and equipment corrosion, etc.

[0003] The existing ammonia gas leakage safety alarm system usually uses ammonia gas sensor, spraying system and alarm device for monitoring and leakage control. When ammonia leakage is detected, the system automatically sprays clean water to absorb leaked ammonia gas by controlling the spraying device. However, this system has the following problems:

[0004] Spraying system cannot stop automatically: the existing spraying system will continue to spray water mist after starting, and cannot automatically stop spraying according to the change of ammonia leakage situation, still needs manual intervention or according to the fixed time set by the system to end, resulting in excessive consumption of absorbing liquid (usually water), increasing operating cost;

[0005] The water spraying absorption speed is slow and the absorption efficiency is low, and the absorbing liquid after spraying is usually directly discharged, which has low economic benefit and may cause secondary pollution to the environment. INVENTION CONTENTS

[0006] In view of the above problems, the purpose of the utility model is to provide an ammonia leakage safety treatment system to solve the problem of waste of ammonia gas absorbing liquid, low treatment efficiency and high treatment cost in existing ammonia leakage treatment.

[0007] The utility model provides a kind of ammonia leakage safety treatment system, system includes:

[0008] Ammonia storage cabinet, cabinet body is placed with ammonia storage container;

[0009] Spraying module, including mutually communicating liquid storage tank and spraying head, absorbing liquid is stored in the liquid storage tank;Wherein, the absorbing liquid includes sodium bicarbonate;

[0010] Monitoring module, including ammonia concentration sensor and pH sensor respectively arranged in the ammonia storage cabinet;

[0011] A control module is connected with the spraying module and the monitoring module respectively; the control module is used for receiving the ammonia gas information of the leaked ammonia in the ammonia storage cabinet collected by the ammonia concentration sensor, controlling the spraying head to spray the absorbent liquid; and the control module is used for receiving the pH value information of the absorbent liquid after absorbing the ammonia gas collected by the pH value sensor, and controlling the spraying head to stop spraying the absorbent liquid.

[0012] As one of the preferred solutions, the monitoring module further comprises a temperature sensor; the control module is further connected with the temperature sensor, and is used for receiving the temperature information in the ammonia storage cabinet collected by the temperature sensor.

[0013] As one of the preferred solutions, the system further comprises:

[0014] An alarm module; the control module is further connected with the alarm module, and is used for controlling the alarm module to send an alarm information according to at least one of the ammonia gas information, the pH value information and the temperature information.

[0015] As one of the preferred solutions, the system further comprises:

[0016] A ventilation module is arranged on the top wall of the ammonia storage cabinet, and is used for circulating the air in the ammonia storage cabinet.

[0017] The control module is further connected with the ventilation module, and is used for controlling the ventilation module to stop working according to the ammonia gas information.

[0018] As one of the preferred solutions, the spraying module further comprises a magnetic control valve and a liquid pump arranged on a pipeline connected with the liquid tank and the spraying head; the magnetic control valve and the liquid pump are connected with the control module respectively.

[0019] As one of the preferred solutions, the ammonia storage cabinet is wrapped with double-layer explosion-proof plates, and a window is arranged on the side wall of the ammonia storage cabinet.

[0020] As one of the preferred solutions, a liquid tank is arranged at the bottom of the ammonia storage cabinet.

[0021] As one of the preferred solutions, the ammonia storage container is a liquid ammonia steel bottle, the liquid ammonia steel bottle is bound to a fixed support, and a valve is arranged at the top of the liquid ammonia steel bottle.

[0022] As one of the preferred solutions, the system further comprises a color-changing indicating tape, the color-changing indicating tape is attached to a potential leakage point of the liquid ammonia steel bottle, and a transparent protective layer is wrapped around the color-changing indicating tape.

[0023] As one of the preferred solutions, the system further comprises a pressure sensor arranged on the liquid ammonia cylinder, and the control module is further connected with the pressure sensor to receive pressure information of the liquid ammonia cylinder collected by the pressure sensor.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] The present application provides an ammonia leakage safety treatment system, which comprises: an ammonia storage cabinet, an ammonia storage container is placed in the cabinet; a spraying module, comprising a liquid storage tank and a spraying head connected with each other, the liquid storage tank stores an absorption liquid; wherein the absorption liquid comprises sodium bicarbonate; a monitoring module, comprising an ammonia concentration sensor and a pH sensor arranged in the ammonia storage cabinet respectively; a control module connected with the spraying module and the monitoring module respectively; the control module is used for receiving ammonia gas information leaked in the ammonia storage cabinet collected by the ammonia concentration sensor, controlling the spraying head to spray the absorption liquid; and receiving pH information of the absorption liquid after absorbing the ammonia gas collected by the pH sensor, controlling the spraying head to stop spraying the absorption liquid.

[0026] Therefore, the present application realizes automatic detection and response of ammonia leakage through linkage processing of the pH sensor, the ammonia concentration sensor and the control module, which is different from the traditional manual stop spraying, and the present system automatically triggers and stops spraying, avoids excessive spraying, saves the absorption liquid, reduces waste, reduces manual intervention, and improves response speed. Sodium bicarbonate can absorb ammonia gas more efficiently, reduces the processing time of leakage accidents, and the product generated in the absorption process (such as ammonium bicarbonate) can be recycled as fertilizer, which not only improves the efficiency of ammonia gas absorption and reduces the waste of absorption liquid, but also realizes resource utilization of waste, reduces the impact on the environment, and has high economic value. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the present application will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 An appearance contour drawing of the ammonia storage cabinet according to an embodiment of the present application is provided.

[0029] Figure 2 An overall structural assembly drawing of the ammonia leakage safety treatment system according to an embodiment of the present application is provided.

[0030] Figure 3The overall structural combination drawing of the ammonia leakage safety treatment system is provided for another embodiment of the utility model.

[0031] Figure 4 The principle flow chart of the ammonia leakage safety treatment system is provided for an embodiment of the utility model.

[0032] Mark explanation:

[0033] 1, control module; 2, buzzer; 3, window; 4, gas interface; 5, ammonia concentration sensor; 6, temperature sensor; 7, pH sensor; 8, ventilation module; 9, spray head; 10, liquid tank; 11, magnetic control valve; 12, fixed support; 13, liquid tank; 14, color change indicator tape; 15, pressure sensor. Specific implementation

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] As Figures 1-4 shown, Figure 1 the appearance contour drawing of the ammonia storage cabinet of the present application is shown; Figure 2 and Figure 3 the overall structural combination drawings of two different ammonia leakage safety treatment systems of the present application are shown respectively; Figure 4 The overall structural combination drawing of the ammonia leakage safety treatment system of the present application is shown. An ammonia leakage safety treatment system, the system comprises: an ammonia storage cabinet, an ammonia storage container is placed in the cabinet body; a spraying module, comprising a liquid tank 10 and a spray head 9 in communication with each other, the liquid tank 10 stores an absorption liquid; wherein the absorption liquid comprises sodium bicarbonate; a monitoring module, comprising an ammonia concentration sensor 5 and a pH sensor 7 arranged in the ammonia storage cabinet respectively; a control module 1 connected with the spraying module and the monitoring module respectively; the control module 1 is used for receiving the ammonia gas information leaked in the ammonia storage cabinet collected by the ammonia concentration sensor 5, controlling the spray head 9 to spray the absorption liquid; and for receiving the pH information of the absorption liquid after absorbing the ammonia gas collected by the pH sensor 7, controlling the spray head 9 to stop spraying the absorption liquid.

[0036] In the embodiment, the ammonia storage cabinet is a square sealed space with a structure of 500*900*2000 (mm), and a liquid ammonia container such as a steel cylinder or a storage tank is stored in the space. The liquid storage tank 10 stores the absorption liquid and is connected to the spray head 9 through a spray pipeline. The spray head 9 is located above the ammonia storage container in the cabinet and has a certain distance from the ammonia storage container. For example, the spray head 9 is arranged in the middle area of the upper part of the cabinet, and the spray head 9 can use a common high-pressure atomizing nozzle to increase the contact area between the absorption liquid and the leaked ammonia gas from the ammonia storage container and improve the absorption efficiency. The spray module is used to spray the absorption liquid, which is different from the traditional water spraying method. Sodium bicarbonate as the absorption liquid can react with ammonia gas to form recyclable fertilizer and improve resource utilization.

[0037] The ammonia concentration sensor 5 is used to detect the ammonia leakage in the ammonia storage chamber in real time. The pH sensor 7 is used to monitor the neutralization of the absorption liquid to prevent excessive spraying. The control module 1 is connected to the monitoring module and the spraying module, and the spraying is automatically started and stopped according to the changes of the ammonia concentration and the pH value.

[0038] In the embodiment, the ammonia concentration sensor 5 is arranged on the top of the cabinet and located above the spray head 9 to avoid the absorption liquid sprayed by the spray head 9 from splashing onto the ammonia concentration sensor 5. The pH sensor 7 is arranged at the bottom of the cabinet and located below the ammonia storage container, so it can be immersed in the solution after the absorption liquid absorbs the leaked ammonia gas. In some embodiments, the pH sensor 7 is located in the liquid tank 13 containing the above-mentioned solution.

[0039] Specifically, in the scenario of ammonia leakage, the ammonia concentration sensor 5 has high sensitivity and fast response capability and can detect very low concentration of ammonia gas in the air. The ammonia concentration sensor 5 transmits the real-time collected ammonia information to the control module 1. When ammonia gas leaks, the ammonia concentration in the ammonia information reaches the set threshold value, that is, when the control module 1 receives the ammonia information as the ammonia threshold information, it is determined that the ammonia has leaked and needs to be treated, and the spraying is automatically started.

[0040] For example, the ammonia threshold value in the ammonia threshold information can be set to 30 mg / m³.

[0041] Specifically, in the scenario of automatic spraying, when sodium bicarbonate is used to absorb ammonia gas, whether the sprayed sodium bicarbonate is excessive can be determined by monitoring the pH value, and automatic stopping of spraying can be realized. The present embodiment uses the pH value information of the absorption liquid after absorbing ammonia gas collected by the acid-base sensor 7, monitors the pH value change of the spraying area through the acid-base sensor 7, and transmits the pH value information to the control module 1. The control module 1 identifies whether the sodium bicarbonate is excessive according to the pH value information. When the pH value in the pH value information reaches the set threshold value, that is, when the control module 1 receives the pH value information as the pH value threshold information, it is determined that the spraying is excessive, and the spraying is automatically stopped.

[0042] It can be understood that the control module 1 receives the real-time collected ammonia gas information and pH value information, compares the set ammonia gas threshold information and pH value threshold information, adjusts the control signal to the spraying head 9 accordingly, and realizes automatic spraying and automatic stopping of spraying. The control principle and strategy are very mature and well-known technology, so the present embodiment will not be described in detail.

[0043] For example, when the absorption liquid used is sodium bicarbonate, sodium bicarbonate is a weak alkaline substance with a pH value of usually 8-9, but after reacting with ammonia, ammonium carbonate is generated, and the pH value of the solution gradually decreases. When the ammonia gas is completely absorbed, the final solution remains neutral or slightly alkaline, with a pH value of 7-8. If the sprayed sodium bicarbonate is excessive, the remaining sodium bicarbonate after the reaction will cause the alkalinity of the solution to increase, and the pH value of the solution will approach the pH value of sodium bicarbonate. Therefore, if the pH value of the absorption liquid after absorbing the leaked ammonia gas continues to rise and exceeds 8 for a long time, it means that the sodium bicarbonate is excessive.

[0044] The pH value threshold in the pH value threshold information can be set to a value between 7 and 8. If the pH value of the solution (the solution after the absorption liquid absorbs ammonia gas) is the pH value threshold and is relatively stable, it means that the leaked ammonia gas has been basically or completely neutralized by the absorption liquid. If the pH value of the solution exceeds the pH value threshold and does not decrease, it means that the sodium bicarbonate is excessive. At this time, the concentration of sodium bicarbonate in the solution exceeds the amount required to neutralize the ammonia gas, and the control module 1 automatically stops the spraying.

[0045] Considering that in the actual leakage scenario, if the spraying is stopped after reaching the neutralization equilibrium point, the leakage source may continue to release ammonia gas during the plugging process or during the process of going to plug, causing the environmental ammonia concentration to rise slightly. In order to ensure that the ammonia leakage is completely safe for subsequent plugging operations, the pH value threshold can be appropriately increased (set to a higher pH value) and the spraying time can be appropriately extended. Therefore, the appropriate over-spraying ensures that after the spraying is stopped, the sodium bicarbonate solution still has enough neutralization capacity before the worker plugs, can continue to neutralize these residual gases, and prevents the accumulation of residual ammonia gas. Therefore, it is preferred that the pH value threshold be set to slightly higher than neutral, such as a pH value of 7.5.

[0046] Therefore, through the linkage processing of the acid-base sensor 7, the ammonia concentration sensor 5 and the control module 1, the automatic detection and response of ammonia leakage are realized, which is different from the traditional manual stop spraying. The system automatically triggers the spraying and alarm, avoids excessive spraying, saves the absorption liquid, reduces waste, reduces manual intervention, and improves the response speed. Sodium bicarbonate is used to absorb ammonia gas, which can more efficiently absorb ammonia gas, reduce the handling time of leakage accidents, and the product generated in the absorption process (such as ammonium bicarbonate) can be recycled as fertilizer, which not only improves the efficiency of ammonia gas absorption and reduces the waste of absorption liquid, but also realizes the resource utilization of waste, reduces the impact on the environment, and has high economic value.

[0047] The system can be applied to chemical plants, cold storage industry, agricultural facilities, medical industry, liquid ammonia transportation stations, storage warehouses, laboratories and other use scenarios.

[0048] In some embodiments, the control module 1 can automatically stop spraying according to the received ammonia gas information and the acid-base information. After the leakage occurs, when the neutralization of the leaked ammonia gas is completed, the ammonia concentration will decrease again to close to 0. The ammonia gas information collected by the ammonia concentration sensor 5 changes, and if the ammonia concentration collected by the ammonia concentration sensor 5 decreases to a safe range (such as <1mg / m 3 ), it can be considered that the leaked ammonia gas has been completely diluted or absorbed. Therefore, by jointly monitoring the ammonia leakage situation by the ammonia concentration sensor 5 and the acid-base sensor 7, it can be more accurately judged whether the ammonia gas has been completely absorbed, so as to realize the automatic control of stopping the spraying of the absorption liquid

[0049] Preferably, when the control module 1 receives the ammonia gas information transmitted by the ammonia concentration sensor 5 as 1mg / m 3 , and the acid-base information transmitted by the acid-base sensor 7 as 7.5, the control module 1 stops spraying the absorption liquid. After confirming that the ammonia concentration and the pH value both reach a safe level, subsequent plugging operations can be performed to realize efficient and safe leakage treatment.

[0050] As a further supplement to the present embodiment, the monitoring module further comprises a temperature sensor 6; the control module 1 is further connected with the temperature sensor 6 for receiving the temperature information in the ammonia storage tank collected by the temperature sensor 6. In the present embodiment, the temperature sensor 6 is arranged at the top of the tank body adjacent to the ammonia concentration sensor 5 for monitoring the temperature in the ammonia storage tank. Liquid ammonia is easy to vaporize at room temperature, and if the environmental temperature rises, it may cause the evaporation of liquid ammonia to accelerate, increase the pressure in the tank, and thus increase the risk of leakage. By monitoring the temperature of the ammonia storage tank through the temperature sensor 6, the system can take preventive measures in advance.

[0051] In some embodiments, a set of spraying modules, such as a water storage tank and water spraying heads 9 and corresponding spraying pipelines, can be added. When the temperature is too high, the control module 1 controls the water in the water storage tank to be sprayed through the water spraying heads 9 to reduce the temperature in the environment.

[0052] Preferably, under the two sets of spraying modules, the water spraying heads 9 and the spraying heads 9 can be arranged adjacently or staggeredly. When the absorption liquid is completely sprayed, the control module 1 can start the water spraying heads 9 to spray the water solution again to avoid corrosion of the surface of the equipment by the residual alkaline liquid.

[0053] As an improvement of the present embodiment, the system further comprises an alarm module; the control module 1 is further connected with the alarm module, and is used for controlling the alarm module to send alarm information according to at least one of the ammonia information, the pH information and the temperature information.

[0054] The alarm module of the present embodiment is connected with the control module 1, and the control module 1 can determine whether to alarm according to the information transmitted by at least one of the ammonia concentration sensor 5, the pH sensor 7 and the temperature sensor 6 connected therewith. Specifically, the control module 1 receives the data collected by different sensors, and sends corresponding alarm information in different abnormal data situations to timely remind relevant personnel to handle. According to the abnormal types, such as abnormal oxygen information, abnormal pH information or abnormal temperature information, the alarm module can send alarms of different forms, such as sound, light and remote push, to inform the abnormal situation to the workers.

[0055] In the present embodiment, the ammonia concentration sensor 5, the pH sensor 7 and the temperature sensor 6 all collect corresponding environmental parameter information (ammonia information, pH information and temperature information) in real time, and transmit the data to the control module 1. The control module 1 judges based on a preset threshold value. The control module 1 analyzes the data in real time. Only when the collected environmental parameter information reaches or exceeds the set environmental threshold value, the information is identified as abnormal information, and the corresponding alarm mechanism is triggered.

[0056] For example, when the ammonia information is ammonia threshold information, the pH information is excessive threshold information, and the temperature information is temperature threshold information, the control module 1 controls the alarm module to alarm based on the above information.

[0057] Exemplarily, the ammonia threshold information is the ammonia threshold value (30 mg / m 3 ) at which the absorption liquid spraying is started. Therefore, when the received ammonia information leaks, the ammonia leakage alarm is triggered.

[0058] The excessive threshold information is a second pH threshold value (> 7.5) that exceeds the pH threshold value (7.5). Therefore, when the sodium bicarbonate is sprayed excessively, the excessive spraying alarm is triggered.

[0059] The temperature threshold information is a high temperature threshold, and a high temperature alarm is triggered if the temperature is abnormally high (e.g., ≥ 40°C).

[0060] Further, the alarm module can include a buzzer 2, an LED alarm lamp, a remote alarm device (SMS / APP notification), and the like.

[0061] Preferably, the alarm module is connected with the ammonia concentration sensor 5, the pH sensor 7, and the temperature sensor 6, and in the case of any one of the ammonia information, the pH information, and the temperature information being abnormal, an alarm is issued through the alarm module.

[0062] In some embodiments, different sensors can be respectively connected with different alarm devices. For example, the buzzer 2 is connected with the ammonia concentration sensor 5, and the control module 1 triggers the buzzer 2 to issue an alarm according to the ammonia threshold information. For another example, the LED alarm lamp is connected with the pH sensor 7, and the control module 1 triggers the LED alarm lamp to flash according to the excess threshold information. For another example, the remote alarm device is connected with the temperature sensor 6, and the control module 1 sends alarm information to the manager's mobile phone or APP through the remote communication module according to the temperature threshold information.

[0063] In some embodiments, the alarm devices can be shared by the sensors. For example, the ammonia information, the pH information, or the temperature information being abnormal all remotely push SMS / APP notifications to the manager. For another example, the ammonia information, the pH information, or the temperature information being abnormal all trigger the LED indicator light to flash, but different light colors can be used to distinguish abnormal conditions, such as the LED indicator light flashing red when ammonia leaks, the LED indicator light flashing yellow when the temperature is too high, and the LED indicator light flashing blue when the spraying is excessive.

[0064] In some embodiments, different sensors can be respectively connected with different multiple alarm devices. For example, when ammonia leaks, the LED indicator light flashes red and the buzzer 2 emits a low sound.

[0065] The control module 1 is also connected with a remote terminal through a remote communication module, and displays the real-time collected ammonia information, pH information, and temperature information on the terminal screen to remotely alarm through text information.

[0066] In further technical solutions, the system further includes: a ventilation module 8 arranged on the top wall of the ammonia storage cabinet for circulating air in the ammonia storage cabinet; and the control module 1 is also connected with the ventilation module 8 for controlling the ventilation module 8 to stop working according to the ammonia information.

[0067] During normal use, ventilation module 8 is typically kept open, continuously operating to ensure air circulation within the cabinet. Ammonia concentration sensor 5 monitors the internal ammonia concentration in real time. When ammonia threshold information is detected, the control system automatically shuts off ventilation module 8 to prevent ammonia from spreading outside the ammonia storage tank. Simultaneously, it sends an ammonia leak alarm to designated personnel and activates a sprinkler system to quickly absorb the leaked ammonia. When the ammonia concentration is below the set ammonia threshold, the ammonia is within a controllable range, and ventilation module 8 is used to prevent ammonia buildup inside the storage tank.

[0068] The ventilation module 8 can be manually turned on or automatically turned on by the control module 1.

[0069] Among them, ventilation module 8 can be an exhaust fan, which is installed on the top wall of the ammonia storage tank to continuously exhaust the air inside the tank and maintain air circulation inside the tank.

[0070] Furthermore, the spray module also includes a magnetic control valve 11 and a liquid pump installed on the pipeline connecting the storage tank 10 and the spray head 9. The magnetic control valve 11 and the liquid pump are respectively connected to the control module 1. A delivery pipeline connects the storage tank 10 and the spray head 9, ensuring that the absorbent liquid is transported from the storage tank 10 located outside the cabinet to the spray head 9 located inside the cabinet. The magnetic control valve 11 is installed on the delivery pipeline to control the flow of the absorbent liquid. The liquid pump is installed on the delivery pipeline to provide the pressure required for spraying, ensuring that the absorbent liquid can be smoothly delivered to the spray head 9. When an ammonia leak is detected, the control module 1 controls the opening of the magnetic control valve 11, starting the liquid pump to allow the absorbent liquid to flow from the delivery pipeline and be sprayed through the spray head 9. When the pH sensor 7 detects that spraying is complete (pH value reaches the set threshold), the control module 1 automatically closes the magnetic control valve 11 and stops the liquid pump to prevent unnecessary consumption of the absorbent liquid.

[0071] In another embodiment, the ammonia storage cabinet is encased in a double-layer explosion-proof plate, and a viewing window 3 is provided on the side wall of the ammonia storage cabinet. And / or a liquid tank 13 is provided at the bottom of the ammonia storage cabinet. The ammonia storage cabinet of this embodiment has a double-layer explosion-proof plate, two viewing windows 3 on the front, and two gas cylinder fixing brackets 12 reserved inside. The ammonia storage container is equipped with a liquid ammonia pressure reducing valve, which is connected to a 6mm stainless steel pipe and connected to the side of the cabinet. A gas passage interface 4 is reserved on the side of the cabinet, and the stainless steel pipe passes through the gas passage interface 4 to connect to the corresponding equipment. The bottom of the cabinet has a liquid tank 13 with a height of 300mm. The cabinet is sealed, and all leaked ammonia is dissolved in the absorbent liquid and absorbed by the liquid tank 13, avoiding harm to personnel and the environment.

[0072] For example, a double-layer explosion-proof panel can be constructed using high-strength metals (such as stainless steel or alloy steel) and explosion-proof composite materials (such as ceramic layers or explosion-proof coatings) to enclose the outer perimeter of the ammonia storage tank. A viewing window 3 can be constructed using tempered glass or explosion-proof transparent materials (such as polycarbonate panels) to facilitate management personnel's observation of the actual conditions inside the ammonia storage tank.

[0073] Preferably, the ammonia storage container is a liquid ammonia cylinder, which is tied to the fixed bracket 12, and a valve is provided on the top of the liquid ammonia cylinder.

[0074] It is understood that the liquid ammonia cylinder comprises a cylindrical body that stores liquid ammonia. A valve is installed at the top of the cylindrical body. The valve includes a main valve that controls the filling and release of liquid ammonia, which connects to the required equipment via an outlet pipe passing through a gas inlet 4 on the side of the cabinet. The valve also includes a pressure-reducing valve located on the side of the main valve or near the cylinder opening. When the internal pressure of the cylinder is too high, the pressure-reducing valve automatically releases pressure to prevent the cylinder from bursting. In this design, a fixed support 12 is installed inside the ammonia storage cabinet. The fixed support 12 can be a ring-shaped or legged structure, and the liquid ammonia cylinder is fixed to the fixed support 12 to prevent it from tipping over.

[0075] Please refer to it again. Figure 3 Typically, ammonia storage tanks contain several liquid ammonia cylinders. In the event of a leak, management personnel need to check each leaking cylinder one by one. Therefore, this system is equipped with a color-changing indicator strip 14, which is attached to the potential leak point of the liquid ammonia cylinder. The outer periphery of the color-changing indicator strip 14 is wrapped with a transparent protective layer.

[0076] Leaks in liquid ammonia cylinders are often caused by damage or corrosion to valves, pipes, flanges, or welds. Therefore, potential leak points are usually at valves or connection points (such as pipe joints or welds). A color-changing indicator strip 14 sensitive to ammonia can be attached to the potential leak point. When a leak occurs, ammonia gas escapes through the leak, causing the indicator strip 14 to change color, visually locating the leak and thus identifying the leaking liquid ammonia cylinder.

[0077] The color-changing indicator band 14 is a sheet material of a pH indicator sensitive to ammonia, which can fit tightly against the surface of the ammonia bottle. A transparent protective layer is used to prevent the developing band from becoming ineffective due to moisture, spraying, or oxidation.

[0078] This solution is suitable for minor leaks caused by poor sealing of valves, interfaces, etc. Once a leak occurs, a noticeable color change allows for quick visual identification by management personnel. It is economical and practical for environments with multiple liquid ammonia cylinders stored.

[0079] In an alternative solution, to avoid missing leaks, the system further includes a pressure sensor 15 installed on the liquid ammonia cylinder, and the control module 1 is also connected to the pressure sensor 15 to receive the pressure information of the liquid ammonia cylinder collected by the pressure sensor 15.

[0080] In this embodiment, each pressure sensor 15 is independently installed at the valve port or on the surface of each liquid ammonia cylinder to measure pressure changes inside the cylinder. Under normal conditions, the liquid ammonia inside the cylinder is at a stable pressure. When a cylinder leaks, the internal pressure usually decreases, and the pressure sensor 15 detects this abnormal downward trend. The control module 1 receives the pressure data from the pressure sensor 15 in real time and displays it on a remote terminal screen. If the pressure of a certain liquid ammonia cylinder drops abnormally while the pressure of other cylinders remains normal, the leaking liquid ammonia cylinder can be accurately located without extensive searching, thus improving emergency response efficiency.

[0081] In some embodiments, each liquid ammonia cylinder is typically equipped with a pressure gauge near the top valve assembly to monitor the internal pressure of the cylinder in real time. Therefore, workers can also manually read the pressure readings of each liquid ammonia cylinder and compare the pressure changes of different cylinders to determine which cylinder has leaked.

[0082] As can be seen, pressure data reflects the overall pressure change of the cylinder and cannot precisely pinpoint the leak point. Therefore, it is preferable to combine the color-changing indicator strip 14 and the pressure sensor 15 to further investigate the specific leak location of the ammonia cylinder. Figure 3 As shown, this improves the efficiency of ammonia leak handling.

[0083] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0084] It should also be noted that, in this document, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device.

[0085] The above provides a detailed description of an ammonia leak safety handling system provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, those skilled in the art will recognize that various modifications and variations in the specific implementation methods and application scope may occur based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, but obvious variations or modifications derived therefrom are still within the protection scope of this application.

Claims

1. An ammonia leak safety handling system, characterized in that the system... include: Ammonia storage cabinet, with an ammonia storage container placed inside the cabinet; A spray module includes a storage tank and spray heads that are interconnected, wherein the storage tank stores an absorbent liquid; and the absorbent liquid includes sodium bicarbonate. The monitoring module includes an ammonia concentration sensor and an acid-base level sensor respectively installed in the ammonia storage tank; A control module is connected to both the spray module and the monitoring module. The control module is used to receive information about leaked ammonia gas in the ammonia storage tank collected by the ammonia concentration sensor, and to control the spray head to spray the absorbent liquid. It is also used to receive information about the pH of the absorbent liquid after absorbing the ammonia gas collected by the pH sensor, and to control the spray head to stop spraying the absorbent liquid.

2. The ammonia leak safety handling system according to claim 1, characterized in that, The monitoring module also includes a temperature sensor; the control module is also connected to the temperature sensor and is used to receive the temperature information inside the ammonia storage tank collected by the temperature sensor.

3. The ammonia leak safety handling system according to claim 2, characterized in that, The system also includes an alarm module; the control module is also connected to the alarm module and is used to control the alarm module to issue alarm information based on at least one of the ammonia information, the pH information and the temperature information.

4. The ammonia leak safety handling system according to claim 1, characterized in that, The system also includes: A ventilation module is installed on the top wall of the ammonia storage tank to circulate air inside the ammonia storage tank; The control module is also connected to the ventilation module and is used to control the ventilation module to stop working based on the ammonia information.

5. The ammonia leak safety handling system according to claim 1, characterized in that, The spray module also includes a magnetic valve and a liquid pump installed on the pipeline connecting the liquid storage tank and the spray head, and the magnetic valve and the liquid pump are respectively connected to the control module.

6. The ammonia leak safety handling system according to claim 1, characterized in that, The ammonia storage tank is encased in double-layer explosion-proof panels, and a viewing window is provided on the side wall of the ammonia storage tank.

7. The ammonia leak safety handling system according to claim 1, characterized in that, The bottom of the ammonia storage tank is equipped with a liquid tank.

8. The ammonia leak safety handling system according to claim 1, characterized in that, The ammonia storage container is a liquid ammonia cylinder, which is tied to a fixed support and has a valve on its top.

9. The ammonia leak safety handling system according to claim 8, characterized in that, The system also includes a color-changing indicator strip, which is attached to potential leak points on the liquid ammonia cylinder and is surrounded by a transparent protective layer.

10. The ammonia leak safety handling system according to claim 8, characterized in that, The system also includes a pressure sensor installed on the liquid ammonia cylinder, and the control module is also connected to the pressure sensor to receive the pressure information of the liquid ammonia cylinder collected by the pressure sensor.

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