Solution storage system with intelligent ammonia gas recovery device and control method thereof

Abstract

The invention relates to the technical field of solution storage systems of green intelligent recovery devices, and discloses a solution storage system with an intelligent ammonia gas recovery device and a control method thereof.The solution storage system comprises a solution storage tank installed on the ground of a workshop, a first recovery device, a second recovery device and an intelligent control system; the invention relates to a solution storage system with an intelligent ammonia gas recovery device and a control method thereof. The control method comprises the following steps: S1, carrying out an overall process; s2, data collection; s3, discharging and recycling are intelligently controlled; and S4, valve intelligent control feedback and learning functions. According to the invention, automatic absorption of ammonia gas is realized, the problem that the environment is influenced by excessive emission is completely avoided, the situation that ammonia gas leaks and lags behind treatment is avoided by intelligently adjusting components such as a valve and a pump, the environment index of a field workshop is improved, the working environment of field operation or maintenance personnel is improved, and the environmental protection standard is met; and the ammonia water automatically generated by the system is zero-discharged to the outside.

Description

Technical Field

[0001] This invention relates to the field of solution storage system technology for green intelligent recycling devices, specifically to a solution storage system with an intelligent ammonia recovery device and its control method. Background Technology

[0002] When ammonia water is unloaded from the cement kiln denitrification system to the solution storage tank, if the storage system is not properly sealed or no sealing device is installed, or if the monitoring and regulation methods used for the sealing and recovery device are lagging behind, the ammonia emissions near the workshop will exceed the standard, resulting in poor working conditions in the workshop, a pungent odor in the workplace, and failure to meet environmental protection requirements.

[0003] Current conventional solutions involve using ordinary sealing devices to absorb and then release the ammonia. When ammonia concentration exceeds the standard in the workshop, the entire system is then sprayed with water to dilute and absorb the ammonia. This process is time-consuming, and the excess ammonia has already leaked into the factory area, causing pollution. Some systems use manually controlled water seal devices, requiring periodic manual activation of the recovery pump by inspectors, which increases the risk of ammonia concentration exceeding the standard. Therefore, to effectively absorb and recycle ammonia while reducing environmental pollution, and to promote technological advancement and enhance core technological competitiveness in the industry, this application proposes a new implementation scheme that differs from existing solutions storage systems and applications with intelligent ammonia recovery devices. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] Addressing the shortcomings of existing technologies, this invention provides a complete solution from both hardware and software perspectives: intelligent prediction and automatic ammonia recovery. This solution avoids environmental impact and prevents delayed ammonia leakage and treatment. It discloses a solution storage system with an intelligent ammonia recovery device and its control method. The main objectives are to solve problems such as inadequate sealing or lack of sealing devices in existing storage systems, the lag in monitoring and control equipment used in existing sealing devices, and the adverse working conditions and failure to meet environmental protection requirements caused by excessive ammonia emissions near the workshop.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A solution storage system with an intelligent ammonia recovery device and its control method include a solution storage tank installed on the floor of a workshop, a first recovery device, a second recovery device, and an intelligent control system. The top of the first recovery device is connected to a first solution delivery pipe via a flange. The solution storage tank and the first recovery device are connected to a first gas delivery pipe and a solution recovery pipe via flanges. The first recovery device and the second recovery device are connected to a second solution delivery pipe and a second gas delivery pipe via flanges. The top of the second recovery device is connected to a clean water inlet pipe via a flange. The top of the second recovery device is connected to a third gas delivery pipe via a flange. The first recovery device, the solution recovery pipe, the second recovery device, the second solution delivery pipe, the second gas delivery pipe, and the third gas delivery pipe are all connected to the intelligent control system.

[0009] Furthermore, a first ammonia concentration meter is fixedly connected to the top of the first recovery device, a second ammonia concentration meter is fixedly connected to the top of the second recovery device, a first ammonia concentration meter is provided on the outer surface of the second gas delivery pipe, and a second ammonia concentration meter is provided on the outer surface of the third gas delivery pipe.

[0010] Based on the aforementioned scheme, the first recovery device and the second recovery device are respectively equipped with dilution pipes, and the dilution pipes are respectively connected to one end of the first gas conveying pipe and the second gas conveying pipe. The first recovery device and the second recovery device are each equipped with a liquid level pipe and a liquid level control valve, and the liquid level control valve is respectively connected to one end of the second solution conveying pipe and the third gas conveying pipe.

[0011] As a further embodiment of the present invention, the intelligent control system includes an ammonia concentration prediction module, a valve intelligent control module, and a delivery pump recovery control module.

[0012] Furthermore, the outer surface of the solution recovery tube is provided with a first electric valve and a delivery pump. The first electric valve is located at the front end of the delivery pump, and the outer surface of the second solution delivery tube is provided with a second electric valve.

[0013] Based on the aforementioned scheme, the intelligent control system is electrically connected to the first electric valve, the second electric valve, and the delivery pump, respectively.

[0014] As a further embodiment of the present invention, the communication method of the intelligent control system is any one of the following: Profibus fieldbus protocol, 5G remote communication protocol, or CAN protocol.

[0015] Furthermore, a solution storage system with an intelligent ammonia recovery device and its control method include the following steps:

[0016] S1: Overall process: When ammonia water is unloaded into the solution storage tank through the first solution delivery pipe, the high-concentration ammonia gas that evaporates simultaneously enters the first recovery device through the first gas delivery pipe. It is mixed with the absorbent water in the first recovery device and absorbed. Afterwards, some unabsorbed ammonia gas still enters the second recovery device through the second gas delivery pipe. It is absorbed again in the second recovery device. By controlling the liquid level of the recovery device and detecting the ammonia water concentration in the recovery device, the concentration of the incoming ammonia gas is predicted. Finally, the gas is discharged into the atmosphere through the third gas delivery pipe to ensure compliance with gas emission standards.

[0017] S2: Data collection: The first ammonia concentration meter, the second ammonia concentration meter, the first recovery device, the solution recovery pipe, and the second recovery device transmit data to the intelligent control system. The opening and closing information of the first and second electric valves, the operation signal of the delivery pump, etc. are transmitted to the intelligent control system.

[0018] S3: Intelligent Control of Emissions and Recovery: Assuming the initial clean water level in the first recovery unit is 50% (to be determined), and the initial clean water level in the second recovery unit is 50% (to be determined), after high-concentration ammonia enters the first recovery unit, if the ammonia concentration detected in the first recovery unit is greater than 15% or the ammonia concentration detected by the first ammonia concentration meter is greater than 20 ppm, the ammonia-containing gas enters the second recovery unit for further absorption. When the ammonia concentration in the second recovery unit is greater than 12% or the ammonia concentration detected by the second ammonia concentration meter is greater than 15 ppm, the control system automatically increases the liquid level in the second recovery unit to 80%-100% for dilution. If the ammonia concentration detected in the first recovery unit is ≥12% and the concentration increases, the ammonia concentration monitored by the first ammonia concentration meter will be maintained simultaneously. If the liquid level remains unchanged or increases, the intelligent control system automatically opens the second electric valve to transfer the liquid from the second recovery device to the first recovery device for level control. The control system automatically increases the liquid level in the first recovery device to 80%-100% for dilution. When the ammonia concentration in the first recovery device is greater than 18%, the control system automatically opens the first electric valve and starts the transfer pump (starting time to be determined T1) to transfer the liquid from the first recovery device to the solution storage tank. When the liquid level in the first recovery device reaches 10%, the transfer pump stops running, and the control system automatically replenishes clean water to the second recovery device, controlling it at 50%. This process is repeated to ensure that the final ammonia concentration discharged into the atmosphere meets the national emission standards by controlling the liquid level and detecting the concentration.

[0019] S4: Valve intelligent control feedback and learning function. After multiple runs and tests, it accumulates operating parameters and data for system learning and then makes predictions. Based on the ammonia concentration and level in the first and second recovery devices and the monitoring data of the first ammonia concentration meter, it analyzes and forms curves. Integrating artificial AI algorithms, it can make predictions and inferences, and predict the concentration of ammonia in the first gas delivery pipe (high concentration), so as to handle and respond in advance.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, the present invention provides a solution storage system with an intelligent ammonia recovery device and its control method, which has the following beneficial effects:

[0022] 1. This intelligent ammonia recovery device achieves automatic absorption of ammonia, completely avoiding the environmental impact of excessive emissions. The system uses intelligent adjustment valves and pumps to prevent ammonia leakage and delayed treatment, improving on-site workshop environmental indicators and the working environment for on-site operators and maintenance personnel, while meeting environmental standards. When the concentration of the recovery device meets the set value, the intelligent control system automatically controls the valves and pumps to transport the solution to the storage tank, achieving zero external discharge of the automatically generated ammonia water.

[0023] 2. The intelligent control system in this invention can analyze the collected data to form trend curves, enabling predictive reasoning and guiding operation. It has self-learning capabilities, and when parameters change, it can test and learn based on the new characteristic parameters that appear, expand its database, and optimize in real time. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a solution storage system with an intelligent ammonia recovery device and its control method proposed in this invention;

[0025] Figure 2 This is a schematic cross-sectional view of the main valve head of a solution storage system with an intelligent ammonia recovery device and its control method proposed in this invention.

[0026] Figure 3 This is a schematic diagram of the system control logic structure of a solution storage system with an intelligent ammonia recovery device and its control method proposed in this invention;

[0027] Figure 4 This is a cross-sectional view of the first recovery device of the solution storage system with an intelligent ammonia recovery device and its control method proposed in this invention.

[0028] Figure 5 This is a schematic diagram of the signal flow structure of a solution storage system with an intelligent ammonia recovery device and its control method proposed in this invention.

[0029] In the diagram: 1. Solution storage tank; 2. First solution delivery pipe; 3. First gas delivery pipe; 4. First recovery device; 401. First ammonia concentration meter; 5. Solution recovery pipe; 501. First electric valve; 502. Delivery pump; 6. Second recovery device; 601. Second ammonia concentration meter; 7. Second solution delivery pipe; 701. Second electric valve; 8. Second gas delivery pipe; 801. First ammonia concentration meter; 9. Clean water inlet pipe; 10. Third gas delivery pipe; 1001. Second ammonia concentration meter; 11. Intelligent control system; 12. Dilution pipe; 13. Liquid level pipe; 14. Liquid level control valve. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Reference Figures 1-5 A solution storage system with an intelligent ammonia recovery device includes a solution storage tank 1 installed on the floor of a workshop, a first recovery device 4, a second recovery device 6, and an intelligent control system 11. The top of the first recovery device 4 is connected to a first solution delivery pipe 2 via a flange. The solution storage tank 1 and the first recovery device 4 are connected to a first gas delivery pipe 3 and a solution recovery pipe 5 via flanges. The first recovery device 4 and the second recovery device 6 are connected to a second solution delivery pipe 7 and a second gas delivery pipe 8 via flanges. The top of the second recovery device 6 is connected to a clean water inlet pipe 9 via a flange. The top of the second recovery device 6 is connected to a third gas delivery pipe 10 via a flange. The first recovery device 4, the solution recovery pipe 5, the second recovery device 6, the second solution delivery pipe 7, the second gas delivery pipe 8, and the third gas delivery pipe 10 are all connected to the intelligent control system 11 and exchange and transmit data.

[0032] Reference Figure 1 and Figure 2The top of the first recovery device 4 is fixed with a first ammonia concentration meter 401 by bolts, the top of the second recovery device 6 is fixed with a second ammonia concentration meter 601 by bolts, the outer surface of the second gas conveying pipe 8 is provided with a first ammonia concentration meter 801, the outer surface of the third gas conveying pipe 10 is provided with a second ammonia concentration meter 1001, the interior of the first recovery device 4 and the second recovery device 6 are respectively provided with dilution pipes 12, and the dilution pipes 12 are respectively connected to one end of the first gas conveying pipe 3 and the second gas conveying pipe 8, and the interior of the first recovery device 4 and the second recovery device 6 are both provided with a liquid level pipe 13 and a liquid level control valve 14, and the liquid level control valve 14 is respectively connected to one end of the second solution conveying pipe 7 and the third gas conveying pipe 10.

[0033] Reference Figure 3 The intelligent control system 11 monitors parameters and makes predictions to control the liquid level and concentration of the first recovery device 4 and the second recovery device 6, controls the first electric valve 501 and the transfer pump 502 in the solution recovery pipe 5 and the second electric valve 701 in the second solution transfer pipe 7, and monitors the first ammonia concentration meter 801 and the second ammonia concentration meter 1001, etc., to ensure that the ammonia concentration in the gas finally discharged into the atmosphere meets the standard. At the same time, it intelligently recovers the ammonia water in the first recovery device 4 and the second recovery device 6 without the risk of external discharge. The intelligent control system 11 includes an ammonia concentration prediction module, a valve intelligent control module, and a transfer pump recovery control module.

[0034] Reference Figure 1 and Figure 2 The outer surface of the solution recovery pipe 5 is provided with a first electric valve 501 and a transfer pump 502. The first electric valve 501 is located at the front end of the transfer pump 502. The outer surface of the second solution transfer pipe 7 is provided with a second electric valve 701. In addition, pneumatic valves or hydraulic opening and closing devices can also be used. The intelligent control system 11 is electrically connected to the first electric valve 501, the second electric valve 701 and the transfer pump 502 respectively, and receives data such as liquid level and concentration from various liquids in the system for intelligent learning and analysis.

[0035] The communication method between the first gas delivery pipe 3, the first recovery device 4, the solution recovery pipe 5, the second recovery device 6, the second solution delivery pipe 7, the second gas delivery pipe 8, the third gas delivery pipe 10 and the intelligent control system 11 is any one of the following: fieldbus Profibus protocol, 5G remote communication protocol or CAN protocol.

[0036] A solution storage system with an intelligent ammonia recovery device and its control method include the following steps:

[0037] S1: Overall process: When ammonia water is unloaded into solution storage tank 1 through the first solution delivery pipe 2, the high concentration of ammonia gas that evaporates simultaneously enters the first recovery device 4 through the first gas delivery pipe 3. It is mixed with the absorbent water in the first recovery device 4 and absorbed. Afterwards, some unabsorbed ammonia gas still enters the second recovery device 6 through the second gas delivery pipe 8. It is absorbed again in the second recovery device 6. By controlling the liquid level of the recovery device and detecting the ammonia water concentration in the recovery device, the concentration of the incoming ammonia gas is predicted. Finally, the gas is discharged into the atmosphere through the third gas delivery pipe 10 to ensure compliance with gas emission standards.

[0038] S2: Data collection. The first ammonia concentration meter 801, the second ammonia concentration meter 1001, the first recovery device 4, the solution recovery tube 5, and the second recovery device 6 transmit data to the intelligent control system 11. The opening and closing information of the first electric valve 501 and the second electric valve 701, the operation signal of the delivery pump 502, etc. are transmitted to the intelligent control system 11.

[0039] S3: Intelligent Control of Emission and Recycling: Assuming the initial clean water level in the first recycling device 4 is 50% (to be determined) and the initial clean water level in the second recycling device 6 is 50% (to be determined), after high-concentration ammonia enters the first recycling device 4, if the ammonia concentration detected in the first recycling device 4 is greater than 15% or the ammonia concentration detected by the first ammonia concentration meter 801 is greater than 20 ppm, the ammonia-containing gas enters the second recycling device 6 and continues to be absorbed. When the ammonia concentration in the second recycling device 6 is greater than 12% or the ammonia concentration detected by the second ammonia concentration meter 1001 is greater than 15 ppm, the control system automatically increases the liquid level in the second recycling device 6 to 80%-100% for dilution. If the ammonia concentration detected in the first recycling device 4 is ≥12% and the concentration increases, the ammonia concentration monitored by the first ammonia concentration meter 801 will remain unchanged. Alternatively, if the liquid level rises, the intelligent control system 11 will automatically open the second electric valve 701 to transfer the liquid from the second recovery device 6 to the first recovery device 4 for level control. The control system will automatically increase the liquid level of the first recovery device 4 to 80%-100% for dilution. When the ammonia concentration in the first recovery device 4 is greater than 18%, the control system will automatically open the first electric valve 501 and start the transfer pump 502 (starting time to be determined T1) to transfer the liquid from the first recovery device 4 to the solution storage tank 1. When the liquid level in the first recovery device 4 reaches 10%, the transfer pump 502 will stop running, and the control system will automatically add clean water to the second recovery device 6 to maintain it at 50%. This process is repeated to ensure that the final ammonia concentration discharged into the atmosphere meets the national emission standards by controlling the liquid level and detecting the concentration.

[0040] S4: Valve intelligent control feedback and learning function. After multiple runs and tests, it accumulates operating parameters and data for system learning and then makes predictions. Based on the ammonia concentration and level in the first recovery device 4 and the second recovery device 6, as well as the monitoring data of the first ammonia concentration meter 801, it analyzes and forms curves. Integrating artificial AI algorithms, it can make predictions and inferences, and predict the concentration of ammonia in the first gas delivery pipe 3 (high concentration), so as to take measures and respond in advance.

[0041] In this embodiment, the initial liquid level of the first recovery device 4 and the second recovery device 6 is tentatively set to 50%. In actual operation, it can be modified and set. Alternatively, the initial liquid level of the first recovery device 4 can be increased to 70%, and the initial liquid level of the second recovery device 6 can be increased to 60%, etc., to accumulate initial data. This will help to find the optimal operating point as soon as possible in the early stages of practice.

[0042] In addition, the central control operator can also set different values ​​on the intelligent control system 11 (such as adjusting the set values ​​of the first ammonia concentration meter 801 and the second ammonia concentration meter 1001) to meet the stricter emission requirements in the later stage. Compared with other solutions such as ordinary dilution after ammonia exceeds the standard (adjustment lag), it has an additional intelligent and predictive adjustment method.

[0043] The working principle of this embodiment is as follows: When ammonia water is unloaded into solution storage tank 1 through the first solution delivery pipe 2, the high-concentration ammonia gas that evaporates simultaneously enters the first recovery device 4 through the first gas delivery pipe 3. It is mixed with the absorbent water in the first recovery device 4 and absorbed. Afterwards, some unabsorbed ammonia gas still enters the second recovery device 6 through the second gas delivery pipe 8 and is absorbed again in the second recovery device 6. By controlling the liquid level of the recovery device and detecting the ammonia water concentration in the recovery device, the concentration of the incoming ammonia gas is predicted. Finally, the gas is discharged into the atmosphere through the third gas delivery pipe 10 to ensure compliance with gas emission standards.

[0044] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0045] In the description herein, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely 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 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solution storage system with ammonia intelligent recovery device, comprising a solution storage tank (1) installed on the ground of a workshop plant, a first recovery device (4), a second recovery device (6) and an intelligent control system (11), characterized in that, The top of the first recovery device (4) is connected with a first solution delivery pipe (2) through a flange, the first recovery device (4) and the solution storage tank (1) are connected with a first gas delivery pipe (3) and a solution recovery pipe (5) through a flange, the first recovery device (4) and the second recovery device (6) are connected with a second solution delivery pipe (7) and a second gas delivery pipe (8) through a flange, the top of the second recovery device (6) is connected with a clean water inlet pipe (9) through a flange, the top of the second recovery device (6) is connected with a third gas delivery pipe (10) through a flange, and the first recovery device (4), the solution recovery pipe (5), the second recovery device (6), the second solution delivery pipe (7), the second gas delivery pipe (8) and the third gas delivery pipe (10) are connected with an intelligent control system (11).

2. The solution storage system with ammonia gas intelligent recovery device according to claim 1, characterized in that, The top of the first recovery device (4) is fixedly connected with a first ammonia water concentration meter (401), the top of the second recovery device (6) is fixedly connected with a second ammonia water concentration meter (601), the outer surface of the second gas delivery pipe (8) is provided with a first ammonia gas concentration instrument (801), and the outer surface of the third gas delivery pipe (10) is provided with a second ammonia gas concentration instrument (1001).

3. The solution storage system with ammonia gas intelligent recovery device according to claim 1, characterized in that, The inside of the first recovery device (4) and the second recovery device (6) is respectively provided with a dilution pipe (12), and the dilution pipe (12) is connected with one end of the first gas delivery pipe (3) and the second gas delivery pipe (8) respectively, the inside of the first recovery device (4) and the second recovery device (6) is respectively provided with a liquid level pipe (13) and a liquid level control valve (14), and the liquid level control valve (14) is connected with one end of the second solution delivery pipe (7) and the third gas delivery pipe (10) respectively.

4. The solution storage system with ammonia gas intelligent recovery device according to claim 1, characterized in that, The intelligent control system (11) comprises an ammonia gas concentration pre-judgment module, a valve intelligent control module and a delivery pump recovery control module.

5. The solution storage system with ammonia gas intelligent recovery device according to claim 1, characterized in that, The outer surface of the solution recovery pipe (5) is provided with a first electric valve (501) and a delivery pump (502), the first electric valve (501) is arranged at the front end of the delivery pump (502), and the outer surface of the second solution delivery pipe (7) is provided with a second electric valve (701).

6. The solution storage system with ammonia gas intelligent recovery device according to claim 5, characterized in that, The intelligent control system (11) is electrically connected with the first electric valve (501), the second electric valve (701) and the delivery pump (502) respectively.

7. The solution storage system with ammonia gas intelligent recovery device and control method thereof according to claim 1, characterized in that, The communication mode of the intelligent control system (11) is any one of Profibus protocol, 5G remote communication protocol or CAN protocol.

8. The solution storage system with ammonia gas intelligent recovery device and control method thereof according to claim 1, characterized in that, The method comprises the following steps: The top of the first recovery device (4) is connected with a first solution delivery pipe (2) through a flange, the first recovery device (4) and the solution storage tank (1) are connected with a first gas delivery pipe (3) and a solution recovery pipe (5) through a flange, the first recovery device (4) and the second recovery device (6) are connected with a second solution delivery pipe (7) and a second gas delivery pipe (8) through a flange, the top of the second recovery device (6) is connected with a clean water inlet pipe (9) through a flange, the top of the second recovery device (6) is connected with a third gas delivery pipe (10) through a flange, and the first recovery device (4), the solution recovery pipe (5), the second recovery device (6), the second solution delivery pipe (7), the second gas delivery pipe (8) and the third gas delivery pipe (10) are connected with an intelligent control system (11). The top of the first recovery device (4) is fixedly connected with a first ammonia water concentration meter (401), the top of the second recovery device (6) is fixedly connected with a second ammonia water concentration meter (601), the outer surface of the second gas delivery pipe (8) is provided with a first ammonia gas concentration instrument (801), and the outer surface of the third gas delivery pipe (10) is provided with a second ammonia gas concentration instrument (1001). The inside of the first recovery device (4) and the second recovery device (6) is respectively provided with a dilution pipe (12), and the dilution pipe (12) is connected with one end of the first gas delivery pipe (3) and the second gas delivery pipe (8) respectively, the inside of the first recovery device (4) and the second recovery device (6) is respectively provided with a liquid level pipe (13) and a liquid level control valve (14), and the liquid level control valve (14) is connected with one end of the second solution delivery pipe (7) and the third gas delivery pipe (10) respectively. The intelligent control system (11) comprises an ammonia gas concentration pre-judgment module, a valve intelligent control module and a delivery pump recovery control module. The outer surface of the solution recovery pipe (5) is provided with a first electric valve (501) and a delivery pump (502), the first electric valve (501) is arranged at the front end of the delivery pump (502), and the outer surface of the second solution delivery pipe (7) is provided with a second electric valve (701). The intelligent control system (11) is electrically connected with the first electric valve (501), the second electric valve (701) and the delivery pump (502) respectively. The communication mode of the intelligent control system (11) is any one of Profibus protocol, 5G remote communication protocol or CAN protocol. The method comprises the following steps: S1: Overall process: When ammonia is unloaded into the solution storage tank (1) through the first solution delivery pipe (2), high-concentration ammonia gas is simultaneously volatilized into the first recovery device (4) through the first gas delivery pipe (3), mixed with the absorbent clean water in the first recovery device (4), and absorbed. After that, part of the unabsorbed ammonia gas enters the second recovery device (6) through the second gas delivery pipe (8), is absorbed again in the second recovery device (6), and is finally discharged into the atmosphere through the third gas delivery pipe (10) to ensure that it meets the gas emission standard by controlling the recovery device liquid level, detecting the ammonia concentration of the recovery device, and predicting the ammonia concentration, etc. S2: Data collection: The first ammonia concentration instrument (801), the second ammonia concentration instrument (1001), the first recovery device (4), the solution recovery pipe (5), and the second recovery device (6) transmit data to the intelligent control system (11). The opening and closing information of the first electric valve (501) and the second electric valve (701), and the running signal of the delivery pump (502) are transmitted to the intelligent control system (11). S3: Intelligent control of emission and recovery: Assuming that the initial clean water level in the first recovery device (4) is 50% (to be determined), and the initial clean water level in the second recovery device (6) is 50% (to be determined), after high-concentration ammonia gas enters the first recovery device (4), the ammonia concentration detected in the first recovery device (4) is greater than 15% or the first ammonia concentration instrument (801) detects that the ammonia concentration is >20ppm. After the gas containing ammonia enters the second recovery device (6), absorption continues. When the ammonia concentration in the second recovery device (6) is >12% or the second ammonia concentration instrument (1001) detects that the ammonia concentration is >15ppm, the control system automatically increases the liquid level of the second recovery device (6) to 80%-100% for dilution. When the ammonia concentration detected in the first recovery device (4) is ≥12% and the concentration rises, the ammonia concentration monitored by the first ammonia concentration instrument (801) remains unchanged or rises. The intelligent control system (11) automatically opens the second electric valve (701) to deliver the liquid in the second recovery device (6) to the first recovery device (4) for liquid level control. The control system automatically increases the liquid level of the first recovery device (4) to 80%-100% for dilution. When the ammonia concentration in the first recovery device (4) is greater than 18%, the control system automatically opens the first electric valve (501) and the delivery pump (502) for an opening time to be determined (T1) to deliver the liquid in the first recovery device (4) to the solution storage tank (1). When the liquid level in the first recovery device (4) reaches 10%, the delivery pump (502) stops running. The control system automatically replenishes clean water in the second recovery device (6) to control it at 50%. This process is repeated to ensure that the ammonia concentration of the gas finally discharged into the atmosphere meets the national emission standard by controlling the liquid level and detecting the concentration. S4: Valve intelligent control feedback and learning function, after several operations and tests, accumulate operation parameters and data for system learning, according to the ammonia water concentration and liquid level in the first recovery device (4) and the second recovery device (6) and the monitoring data of the first ammonia gas concentration instrument (801), etc. Analysis and form curve, set up artificial AI algorithm, can make prediction reasoning, predict the concentration (high concentration) of ammonia gas in the first gas conveying pipe (3), so as to deal with and respond in advance.

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