A method for the continuous production of catalytically enhanced ammonia water

Abstract

The application belongs to the technical field of ammonia water production, and discloses a catalytic enhanced ammonia water continuous production method, which comprises the following steps: purifying concentrated water by using a reverse osmosis membrane group water purification system to continuously prepare and output fresh water; continuously adding fresh water and liquid ammonia into an ammonia water generator according to a preset matching relationship, gasifying the liquid ammonia into ammonia gas in a liquid ammonia gasification chamber of the ammonia water generator, forming a multi-stage catalytic enhanced absorption reaction bed in a catalytic enhanced reaction chamber of the ammonia water generator, and absorbing the ammonia gas in stages to generate an ammonia water mixture, and then cooling the ammonia water mixture in an ammonia water cooling chamber; passing the cooled ammonia water mixture into a buffer tank for pressure stabilization and buffering, using the buffer tank to return unqualified ammonia water to the catalytic enhanced reaction chamber through a circulating pipeline for re-reaction, and using the buffer tank to store qualified ammonia water through an output pipeline; detecting the ammonia water input concentration in real time, adjusting ammonia water preparation parameters and switching output paths based on intelligent collaborative control logic, realizing continuous ammonia water production and precise concentration control, improving production efficiency, and reducing material loss.

Description

Technical Field

[0001] This invention relates to the field of ammonia production technology, specifically to a catalytically enhanced continuous ammonia production method. Background Technology

[0002] Ammonia water, as an important chemical raw material, is widely used in chemical synthesis, environmental protection, pharmaceutical intermediates, agricultural fertilization, and many other fields. With the increasing demand for ammonia water from various industries, higher requirements are being placed on the continuity, stability, efficiency, and energy consumption control of ammonia water production. Currently, industrial ammonia water production mainly uses liquid ammonia and water as raw materials, prepared through direct absorption or simple mixing and reaction. However, existing production technologies still have many shortcomings in practical applications, making it difficult to meet the needs of large-scale continuous production and precise control of product concentration. Specifically:

[0003] In existing ammonia production processes, water purification, liquid ammonia reaction, and ammonia storage are independent processes, lacking a coordinated and continuous control mechanism. Water purification primarily relies on traditional filtration methods, which cannot achieve continuous purification of concentrated water or a continuous output of desalinated water. Interruptions in the desalinated water supply often disrupt the reaction. Furthermore, there is a lack of effective real-time concentration monitoring and circulation control after the ammonia reaction. When the concentration of the ammonia produced fails to meet the preset standard, the entire production process must be paused, and the substandard ammonia returned to the reaction system for reprocessing or discharged. This frequent interruption of production not only reduces efficiency but also increases energy consumption and material losses, making continuous and large-scale ammonia production difficult. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a catalytically enhanced continuous ammonia production method to solve the technical problems mentioned in the prior art.

[0005] S1. Raw material pretreatment: Use a reverse osmosis membrane system to purify concentrated water for continuous production and output of fresh water;

[0006] S2. Ammonia Catalytic Synthesis: Fresh water and liquid ammonia are continuously added to an ammonia generator according to a pre-prepared ratio. The ammonia generator contains, from top to bottom, a liquid ammonia vaporization chamber, a catalytic enhancement reaction chamber, and an ammonia cooling chamber, connected in series. Liquid ammonia flows into the liquid ammonia vaporization chamber and, after absorbing heat, is converted into ammonia gas. Fresh water flows into the catalytic enhancement reaction chamber, forming a multi-stage, parallel ammonia catalytic enhancement absorption reaction bed along the flow direction of the ammonia gas. After the ammonia gas is completely absorbed by the fresh water, an ammonia-water mixture is generated and flows into the ammonia cooling chamber. The ammonia cooling chamber is equipped with a heat exchange network used to cool the ammonia-water mixture to a preset temperature range.

[0007] S3. Automatic graded storage: The ammonia-water mixture cooled to a preset temperature range is fed into a buffer tank through a connecting pipeline and a primary pump set. The output end of the buffer tank is connected in parallel to the circulation reaction pipeline and the ammonia water output pipeline. The circulation reaction pipeline is connected to the catalytic enhancement reaction chamber through a secondary pump set. The ammonia water output pipeline is connected to multiple ammonia water storage tanks in sequence through a valve assembly via a tertiary pump set to achieve graded storage.

[0008] S4. Ammonia Concentration Control: The ammonia input concentration is detected in real time by an ammonia concentration detector located at the input end of the buffer tank and uploaded to the control terminal. The control terminal has a built-in intelligent collaborative control logic, which is configured to: compare and analyze the real-time detected ammonia input concentration with the preset preparation concentration, and control the control valve group at the output end of the buffer tank to switch its output path based on the analysis results, thereby selectively connecting the circulating reaction pipeline or the ammonia output pipeline to achieve continuous ammonia production and precise concentration control; wherein:

[0009] When the real-time detected ammonia input concentration matches the preset preparation concentration, select to connect the ammonia output pipeline;

[0010] When the real-time detected ammonia input concentration is inconsistent with the preset preparation concentration, a parameter adjustment symbol is generated based on the concentration difference between the two, and the circulating reaction pipeline is selected for connection. At the same time, one or more of the following control logics are executed in the reverse adjustment direction of the parameter adjustment symbol:

[0011] ① Adjust the freshwater flow rate output by the reverse osmosis membrane water purification system or the liquid ammonia input flow rate in the ammonia generator according to the preset adjustment step length continuously or at intervals, so as to change the pre-prepared ratio of freshwater and liquid ammonia in the ammonia generator.

[0012] ② Adjust the heating temperature in the liquid ammonia vaporization chamber according to the preset adjustment step size continuously or at intervals to change the ammonia generation rate.

[0013] ③ Adjust the number of ammonia catalytic enhancement absorption reaction beds in the catalytic enhancement reaction chamber according to the preset adjustment step length or interval, so as to change the medium output parameters of the ammonia-water mixture;

[0014] ④ The flow rate of the cold source in the heat exchange pipe network inside the ammonia cooling chamber is dynamically adjusted based on the output temperature of the ammonia-water mixture.

[0015] Optionally, the concentrate input to the reverse osmosis membrane system includes at least one or more of tap water, river water, and well water.

[0016] Optionally, the reverse osmosis membrane purification system includes at least two sets of reverse osmosis filtration units. Each set of reverse osmosis filtration units includes multiple stages of reverse osmosis filters connected in series via pipes. Each reverse osmosis filter is filled with several segments of reverse osmosis membrane of a predetermined length. The input end of the primary reverse osmosis filter is connected to the output end of the concentrate delivery equipment via an input pipe and a first electronic valve. The output end of the final reverse osmosis filter is connected to the inlet end of the catalytic enhancement reaction chamber via an output pipe and a second electronic valve. Pressure sensors are installed at the input end of the primary reverse osmosis filter and the output end of the final reverse osmosis filter, respectively. The system includes pressure sensors, flow sensors, and / or water quality sensors. These sensors continuously monitor water data at the input of the primary reverse osmosis filter and the output of the final reverse osmosis filter, and upload this data to a control terminal. The control terminal determines whether the received water data is within the normal range based on preset standard data. If the data exceeds the normal range, the system adjusts the reverse osmosis filter unit to a shutdown maintenance mode and closes the corresponding first and second electronic valves. Simultaneously, it switches the operation of the next reverse osmosis filter unit that was in standby mode.

[0017] Optionally, the input end of the primary reverse osmosis filter is connected in sequence to a precision filter and a centrifugal booster pump, and the input end of the precision filter is equipped with a third electronic valve, which opens and closes synchronously with the first electronic valve and the second electronic valve.

[0018] Optionally, the reverse osmosis filtration unit is provided with a backwashing pipeline, which includes a flushing pipe and a drain pipe. The input end of the flushing pipe is connected to the cleaning fluid supply unit, the output end of the flushing pipe is connected to the output end of the final stage reverse osmosis filter, the input end of the drain pipe is connected to the input end of the primary reverse osmosis filter, and the output end of the drain pipe is connected to the waste liquid collection tank. A fourth electronic valve is installed on both the flushing pipe and the drain pipe.

[0019] When the control terminal adjusts any one of the reverse osmosis filter units to the shutdown maintenance mode and closes the corresponding first and second electronic valves, the corresponding fourth electronic valve is opened and the cleaning fluid supply unit is started. The cleaning fluid supply unit pumps several sets of cleaning solutions into the flushing pipe in a preset cleaning sequence, and then flows in reverse through the multiple stages of the reverse osmosis filter before being discharged from the drain pipe, thereby realizing the automatic backwashing cleaning operation of the reverse osmosis filter. After cleaning is completed, the reverse osmosis filter unit is adjusted to the standby state.

[0020] If the reverse osmosis filtration unit runs for less than a preset time during the current operating cycle, it will be adjusted to a fault state, and an early warning mechanism will be triggered to generate an alarm message.

[0021] Optionally, the liquid ammonia vaporization chamber is provided with several sets of storage tanks. The bottom of the inner wall of the storage tank is connected to the output end of the liquid ammonia input pipe. The top opening side of the storage tank is connected to the catalytic enhancement reaction chamber. A heat source conveying channel is provided on the outer periphery of the storage tank. A heat source with adjustable temperature is introduced into the heat source conveying channel to dynamically adjust the vaporization pressure of the liquid ammonia in the storage tank.

[0022] The actual liquid ammonia level in the storage tank is lower than the preset liquid level line.

[0023] Optionally, the catalytic enhancement reaction chamber has multiple nonlinear flow channels arranged side by side in the horizontal direction, and the two ends of the nonlinear flow channels are respectively connected to the liquid ammonia vaporization chamber and the ammonia water cooling chamber; multiple sets of linear nozzles are arranged at intervals or in a relative array on the side wall of the nonlinear flow channels, and the liquid inlet end of the multiple sets of linear nozzles is connected to the liquid outlet end of the reverse osmosis membrane purification system through a water distribution plate and a water supply pipe.

[0024] When the installation interval of the multiple sets of linear nozzles is sufficient to spray fresh water, an ammonia catalytic enhanced absorption reaction bed is formed in the nonlinear flow channel in the vertical direction with multiple layers of spaced arrangement that completely covers the cross-section of the nonlinear flow channel.

[0025] The water supply pipeline is connected to the circulating reaction pipeline, and a one-way valve is installed at the outlet end of the circulating reaction pipeline to ensure that the ammonia water with an unqualified concentration that is introduced into the circulating reaction pipeline flows back into the water supply pipeline for circulation reaction.

[0026] Optionally, the ammonia cooling chamber is provided with multiple overflow weirs in sequence along the ammonia flow direction, wherein the primary overflow weir is connected to the liquid outlet of the nonlinear flow channel, and the bottom of the final overflow weir is connected to the liquid inlet of the buffer tank through a connecting pipe and a primary pump set.

[0027] The heat exchange pipe network is laid sequentially on the bottom of the inner wall of the multi-stage overflow weir, and the flow direction of the cold source in the heat exchange pipe network is opposite to and / or in the same direction as the flow direction of ammonia water in the multi-stage overflow weir.

[0028] The inlet end of the heat exchange pipeline penetrates the outer shell of the ammonia generator and is connected to a cold source input unit, while the outlet end of the heat exchange pipeline penetrates the outer shell of the ammonia generator and is connected to a heat source recovery unit.

[0029] Optionally, the buffer tank is provided with a non-interconnected ammonia water qualified transfer chamber and an ammonia water unqualified transfer chamber. The inlet ends of the ammonia water qualified transfer chamber and the ammonia water unqualified transfer chamber are respectively connected to the outlet end of the connecting pipeline. The outlet ends of the ammonia water qualified transfer chamber and the ammonia water unqualified transfer chamber are both connected to the inlet ends of the circulating reaction pipeline and the ammonia water output pipeline.

[0030] The inlet and outlet of the qualified ammonia transfer chamber are both equipped with a fifth electronic valve. The opening condition of the fifth electronic valve is that the ammonia concentration detector detects that the ammonia input concentration is within the preset detection range.

[0031] The inlet and outlet of the ammonia water unqualified transfer chamber are both equipped with a sixth electronic valve. The opening condition of the sixth electronic valve is that the ammonia water concentration detector detects that the ammonia water input concentration exceeds the preset detection range.

[0032] Optionally, the pre-prepared ratio of fresh water to liquid ammonia is dynamically adjusted based on the ammonia input concentration detected in real time by the ammonia concentration detector, specifically including:

[0033] When the ammonia concentration detector detects that the ammonia input concentration exceeds the preset detection range upper limit, it gradually reduces the input pressure and / or flow rate of liquid ammonia according to the preset parameter adjustment step size, or increases the input pressure and / or flow rate of fresh water.

[0034] When the ammonia concentration detector detects that the ammonia input concentration exceeds the preset detection range lower limit, it gradually reduces the input pressure and / or flow rate of fresh water or increases the input pressure and / or flow rate of liquid ammonia according to the preset parameter adjustment step size.

[0035] The adjustment constraint for the pre-prepared ratio of the fresh water and the liquid ammonia is as follows:

[0036] The total input pressure and total input flow rate of the fresh water and the liquid ammonia are respectively within the preset range of the ammonia water output pressure and output flow rate.

[0037] The beneficial effects that this invention can produce include:

[0038] 1. The present invention provides a catalytically enhanced continuous ammonia production method. This method integrates raw material pretreatment, ammonia catalytic synthesis, automatic graded storage, and ammonia concentration control steps to achieve a continuous production process with linked, predictive, and anomaly-feedback ammonia preparation parameters. This provides unified guidance and synergistic optimization for the previously isolated technical routes, transforming the preparation process from independent modules into an organically linked whole. For example, the operating parameters of each step are transmitted to other steps through a control terminal, and the parameter setting requirements of each step are fed back to other steps for coordinated adjustment. This achieves continuous, stable, precise, controllable, and energy-efficient ammonia preparation, overcoming the limitations of independent control in existing technologies. Through intelligent collaborative control logic, it achieves predictive control and source management of multiple parameters and multiple stages, solving the instability factors present in traditional ammonia production processes, improving production continuity, economy, and quality control. It allows for flexible configuration of different concentrations of ammonia according to order requirements, meeting the needs of large-scale production.

[0039] 2. This invention, in the ammonia water preparation stage, integrates the liquid ammonia vaporization chamber, the catalytic enhancement reaction chamber, and the ammonia water cooling chamber into a series of interconnected components within the ammonia water generator. This enables continuous operation of liquid ammonia vaporization, ammonia water synthesis reaction, and ammonia water cooling, simplifying the production process and improving production continuity. Simultaneously, the liquid ammonia vaporization chamber, through the structural design of the storage tank and dynamic control of the heat source, achieves stable vaporization of liquid ammonia, thus avoiding adverse phenomena such as input fluctuations and incomplete vaporization affecting the reaction, ensuring the stability of ammonia output and improving production safety. Secondly, the catalytic enhancement reaction chamber, through a special flow channel design and nozzle layout, greatly extends the contact time and increases the contact area between ammonia and fresh water, effectively promoting full ammonia absorption and reducing raw material loss and safety hazards caused by ammonia escape. The ammonia water cooling stage incorporates waste heat recovery design, reducing production energy consumption while ensuring the ammonia water is cooled to a preset state, guaranteeing ammonia water stability and subsequent storage quality. This ammonia water generator, through optimized internal structure, achieves physical catalysis and process enhancement effects during the preparation process.

[0040] 3. This invention, through the linkage control of the buffer tank and ammonia concentration detection, can effectively separate qualified and unqualified ammonia water, and quickly return unqualified ammonia water to the catalytic enhancement reaction chamber for re-reaction without interrupting overall production, thus significantly improving production efficiency and reducing material loss; and qualified ammonia water can be stored in stages according to concentration or production batch, thereby avoiding the mixing of ammonia water of different concentrations that would lead to substandard product quality, meeting the purchasing needs of different customers, and facilitating subsequent on-demand output, improving the flexibility of production scheduling and the accuracy of product control. Attached Figure Description

[0041] Figure 1 This is a process flow diagram of the freshwater preparation process for a catalytically enhanced continuous ammonia water production method of the present invention;

[0042] Figure 2 This is a process flow diagram of an ammonia preparation method for a catalytically enhanced continuous ammonia production method according to the present invention;

[0043] Figure 3 For the present invention Figure 2 Enlarged view of point A;

[0044] In the diagram: 1. Ammonia generator; 2. Liquid ammonia vaporization chamber; 3. Catalytic enhancement reaction chamber; 4. Ammonia cooling chamber; 5. Heat exchange network; 6. Primary pump set; 7. Buffer tank; 8. Circulating reaction pipeline; 9. Secondary pump set; 10. Ammonia output pipeline; 11. Tertiary pump set; 12. Ammonia concentration detector; 13. Reverse osmosis filter; 14. First electronic valve; 15. Second electronic valve; 16. Third electronic valve; 17. Flushing pipeline; 18. Sewage pipeline; 19. Fourth electronic valve; 20. Storage tank; 21. Heat source delivery channel; 22. Nonlinear channel; 23. Linear nozzle; 24. Check valve; 25. Overflow weir; 26. Qualified ammonia transfer chamber; 27. Unqualified ammonia transfer chamber; 28. Fifth electronic valve; 29. ​​Sixth electronic valve; 30. Centrifugal booster pump; 31. Precision filter; 32. Water distribution tray. Detailed Implementation

[0045] 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.

[0046] Please see Figure 1 and Figure 2 As shown, the present invention provides a catalytically enhanced continuous ammonia water production method, comprising the following steps:

[0047] Step 1, raw material pretreatment: The concentrated water is purified using a reverse osmosis membrane system to continuously produce and output fresh water.

[0048] Step 2, ammonia catalytic synthesis: Fresh water and liquid ammonia are continuously added to ammonia generator 1 according to a pre-prepared ratio. Ammonia generator 1 is equipped with a liquid ammonia vaporization chamber 2, a catalytic enhancement reaction chamber 3, and an ammonia cooling chamber 4 arranged in series from top to bottom. Liquid ammonia flows into liquid ammonia vaporization chamber 2 and is converted into ammonia gas after heat absorption. Fresh water flows into catalytic enhancement reaction chamber 3 and forms a multi-stage parallel ammonia catalytic enhancement absorption reaction bed along the flow direction of ammonia gas. After the ammonia gas is completely absorbed by the fresh water, an ammonia-water mixture is generated and flows into ammonia cooling chamber 4. A heat exchange network 5 is installed in ammonia cooling chamber 4 to cool the ammonia-water mixture to a preset temperature range.

[0049] Step 3, Automatic Graded Storage: The ammonia-water mixture cooled to a preset temperature range is fed into a buffer tank 7 via a connecting pipeline and a primary pump unit 6. The buffer tank 7 acts as a pressure stabilizer, preventing pressure fluctuations in the ammonia generator 1 from affecting production continuity. The output of the buffer tank 7 is connected in parallel to the circulating reaction pipeline 8 and the ammonia output pipeline 10. The circulating reaction pipeline 8 is connected to the catalytic enhancement reaction chamber 3 via a secondary pump unit 9, allowing ammonia water with unqualified concentrations to be quickly returned to the catalytic enhancement reaction chamber 3 for re-reaction without interrupting the overall production process, thus improving production efficiency and reducing material loss. The ammonia output pipeline 10 is connected to multiple ammonia storage tanks via a tertiary pump unit 11 through valve assemblies, achieving graded storage. This allows for classification and storage based on differences in ammonia concentration or production batches, preventing the mixing of ammonia water of different concentrations from causing substandard product quality. It also facilitates subsequent on-demand output, improving production scheduling flexibility and product control accuracy.

[0050] Step 4, Ammonia Concentration Control: The ammonia input concentration is detected in real time by an ammonia concentration detector 12 located at the input end of buffer tank 7 and uploaded to the control terminal. The control terminal has a built-in intelligent collaborative control logic, which is configured to: compare and analyze the real-time detected ammonia input concentration with the preset preparation concentration; and control the control valve group at the output end of buffer tank 7 to switch its output path based on the analysis results, thereby selectively connecting the circulating reaction pipeline 8 or the ammonia output pipeline 10 to achieve continuous ammonia production and precise concentration control; wherein: when the real-time detected ammonia input concentration is consistent with the preset preparation concentration, the ammonia output pipeline 10 is selected to be connected; when the real-time detected ammonia input concentration is inconsistent with the preset preparation concentration, a parameter adjustment symbol is generated based on the concentration difference between the two, and the circulating reaction pipeline 8 is selected to be connected, while one or more of the following control logics are executed in the reverse adjustment direction of the parameter adjustment symbol:

[0051] ① Adjust the freshwater flow rate output by the reverse osmosis membrane water purification system or the liquid ammonia input flow rate in the ammonia generator 1 according to the preset adjustment step length continuously or at intervals, so as to change the pre-prepared ratio of freshwater and liquid ammonia in the ammonia generator 1.

[0052] ② Adjust the heating temperature in the liquid ammonia vaporization chamber 2 according to the preset adjustment step length continuously or at intervals to change the ammonia generation rate.

[0053] ③ Adjust the number of ammonia catalytic enhanced absorption reaction beds in the catalytic enhanced reaction chamber 3 according to the preset adjustment step length or interval, so as to change the medium output parameters of the ammonia-water mixture. The medium output parameters specifically include at least one of output flow rate, temperature and concentration.

[0054] ④ The flow rate of the cold source in the heat exchange network 5 within the ammonia cooling chamber 4 is dynamically adjusted based on the output temperature of the ammonia mixture. This utilizes real-time online detection of ammonia concentration to achieve diversified and precise matching and dynamic optimization of ammonia preparation parameters. By switching output paths, it ensures that qualified ammonia smoothly enters the storage stage and that unqualified ammonia is promptly returned to the reaction, guaranteeing that the ammonia product concentration meets preset standards from the source. This avoids production rework and product waste due to unqualified concentrations. Simultaneously, it automates concentration control, facilitating the configuration of ammonia at different concentrations according to order requirements, reducing manual intervention, improving production continuity and stability, and meeting the demand for product quality uniformity in large-scale production.

[0055] Furthermore, the concentrated water input to the reverse osmosis membrane module system includes at least one or more of tap water, river water, and well water, eliminating reliance on a single water source, reducing the cost of obtaining raw materials, and simultaneously enabling the resource utilization of various low-quality water sources. This improves the economic and environmental efficiency of production, avoids water waste, and ensures continuous production under different water source conditions. Specifically, the reverse osmosis membrane module water purification system includes at least two sets of reverse osmosis filtration units. When one set fails, the system automatically switches to the next set to ensure continuous and stable freshwater output, thereby achieving redundant backup of the filtration units and ensuring uninterrupted water purification, providing stable support for continuous ammonia production. Figure 1As shown, each reverse osmosis filtration unit includes multiple reverse osmosis filters connected in series via pipes. The reverse osmosis filter 13 is filled with several segments of reverse osmosis membrane of a preset length. The input end of the primary reverse osmosis filter is connected to the output end of the concentrate delivery equipment via an input pipe and a first electronic valve 14. The output end of the final reverse osmosis filter is connected to the inlet end of the catalytic enhancement reaction chamber 3 via an output pipe and a second electronic valve 15. Pressure detection sensors, flow detection sensors, and / or water quality detection sensors are respectively installed at the input end of the primary reverse osmosis filter and the output end of the final reverse osmosis filter. The pressure detection sensors, flow detection sensors, and / or water quality detection sensors detect the water data at the input end of the primary reverse osmosis filter and the output end of the final reverse osmosis filter in real time and upload it to the control terminal. The control terminal determines whether the currently received water data is within the normal range based on preset standard data. When it exceeds the normal range, the reverse osmosis filtration unit is adjusted to the shutdown maintenance mode and the corresponding first electronic valve 14 and second electronic valve 15 are closed. At the same time, the operation of the next reverse osmosis filtration unit in standby mode is switched on. Abnormal water data can be determined based on any one of the following sets of data: the pressure difference, flow difference, and water purity before and after the multi-stage reverse osmosis filter meet the reaction conditions. This ensures that the pressure, flow rate, and water purity of the freshwater during ammonia preparation meet the dynamic control requirements of ammonia generator 1. In this system, the reverse osmosis membrane purification system improves freshwater purity through multi-stage filtration and combines multiple sensors for synchronous real-time monitoring and automatic switching control. This allows for precise control of freshwater pressure, flow rate, and water quality, preventing instability in the ammonia reaction and concentration fluctuations due to abnormal freshwater parameters. Simultaneously, it achieves automated operation and maintenance of the filtration units, reducing manual intervention, improving production efficiency and stability, and effectively solving the problem of inaccurate freshwater parameter control that affects ammonia quality.

[0056] Furthermore, such as Figure 1 As shown, the input end of the primary reverse osmosis filter is connected in sequence to a precision filter 31 and a centrifugal booster pump 30. The input end of the precision filter 31 is equipped with a third electronic valve 16, which opens and closes synchronously with the first electronic valve 14 and the second electronic valve 15.

[0057] In some embodiments, the centrifugal booster pump 30 is selected as an ISW80-160B type horizontal centrifugal booster pump 30. Specifically, it drives the impeller to rotate at high speed by a motor. Under the action of centrifugal force, the liquid inside the impeller is thrown to the edge of the impeller and enters the pump casing. After entering the pump casing, the flow channel inside the pump casing gradually expands, the liquid flow velocity decreases, and kinetic energy is converted into pressure energy, thereby pressurizing the concentrate and ensuring that the concentrate can meet the filtration pressure requirements of the subsequent reverse osmosis filtration unit, avoiding the problem of insufficient filtration and low water purification efficiency due to insufficient pressure.

[0058] In some embodiments, the precision filter 31 is an SGL-40-5 type stainless steel precision filter 31: it uses a stainless steel porous filter tube as a support frame and has a built-in 5μm precision polypropylene pleated filter membrane. When the concentrate enters the precision filter 31, the filter membrane can efficiently intercept suspended particles, colloids, rust and other small impurities in the concentrate, preventing impurities from entering the subsequent reverse osmosis filter 13 and scratching or clogging the reverse osmosis membrane, extending the service life of the reverse osmosis membrane, reducing the maintenance frequency of the reverse osmosis filter 13, and ensuring the continuity and stability of freshwater production.

[0059] Furthermore, such as Figure 1 As shown, the reverse osmosis filtration unit is equipped with a backwashing pipeline, which includes a flushing pipe 17 and a drain pipe 18. The input end of the flushing pipe 17 is connected to the cleaning fluid supply unit, and the output end of the flushing pipe 17 is connected to the output end of the final stage reverse osmosis filter. The input end of the drain pipe 18 is connected to the input end of the primary reverse osmosis filter, and the output end of the drain pipe 18 is connected to the waste liquid collection tank. A fourth electronic valve 19 is installed on both the flushing pipe 17 and the drain pipe 18. When the control terminal adjusts any one of the reverse osmosis filtration units to the shutdown maintenance mode and shuts down the corresponding first electronic valve 19, the system can automatically shut down the reverse osmosis filtration unit. When valve 14 and the second electronic valve 15 are activated, the corresponding fourth electronic valve 19 and the cleaning solution supply unit are opened. The cleaning solution supply unit pumps several sets of cleaning solutions into the flushing pipe 17 in a preset cleaning sequence, and then flows backward through the multi-stage reverse osmosis filter before being discharged from the drain pipe 18, realizing the automatic backwashing cleaning operation of the reverse osmosis filter 13. After cleaning is completed, the reverse osmosis filter unit is adjusted to standby mode. If the running time of the reverse osmosis filter unit in the current operating cycle is lower than the preset value, it is adjusted to the fault state, and the early warning mechanism is triggered to generate alarm information. This realizes the automatic backwashing of the reverse osmosis filter 13 without manual intervention, reducing operation and maintenance costs, shortening maintenance time, and ensuring that the filter unit can be quickly put into standby mode after cleaning, ensuring the continuity of water purification production. At the same time, through running time monitoring and fault early warning, potential faults of the filter unit can be detected in time, avoiding the expansion of faults and production interruptions, improving the timeliness and reliability of system operation and maintenance, and further supporting the continuous and stable production of ammonia.

[0060] In the above, the cleaning solution includes at least two types: a mixed solution containing cleaning agent and clean water. The cleaning order of the two cleaning solutions is: mixed solution containing cleaning agent → clean water. At the same time, the cleaning time of each cleaning solution is longer than the time it takes for the fluid to completely pass through the multi-stage reverse osmosis filter. The cleaning time of the clean water is delayed until the quality of the liquid discharged from the drain pipe 18 is consistent with the quality of the clean water input into the flushing pipe 17, so as to ensure that the reverse osmosis filter 13 is thoroughly cleaned. In addition, in order to ensure that the multi-stage reverse osmosis filter can be put into use directly after backwashing, the quality of the clean water input into the flushing pipe 17 is required to be no lower than that of fresh water.

[0061] Furthermore, such as Figure 2 As shown, the liquid ammonia vaporization chamber 2 is equipped with several sets of storage tanks 20. The bottom of the inner wall of the storage tank 20 is connected to the output end of the liquid ammonia input pipeline to achieve stable buffering of liquid ammonia and avoid fluctuations in the liquid ammonia input causing instability in the vaporization reaction, which would affect the output pressure and flow rate of ammonia participating in subsequent reactions and cause fluctuations in the ammonia concentration. The top opening of the storage tank 20 is connected to the catalytic enhancement reaction chamber 3. A heat source delivery channel 21 is provided on the outer periphery of the storage tank 20. A heat source with adjustable temperature is introduced into the heat source delivery channel 21 to dynamically adjust the temperature. The vaporization pressure of liquid ammonia in the storage tank 20 is used to coordinate the precise matching of ammonia output and fresh water input in real time, ensuring the stable progress of the ammonia synthesis reaction and thus ensuring the uniformity of ammonia concentration preparation. The actual liquid ammonia level in the storage tank 20 is lower than the preset liquid level line, which can be detected in real time by a liquid level detection sensor. This can prevent incomplete vaporization of liquid ammonia from directly entering the catalytic enhancement reaction chamber 3, preventing a sudden increase in chamber pressure due to local violent reaction between liquid ammonia and fresh water, which would affect production safety. At the same time, it can improve ammonia absorption efficiency and reduce raw material waste.

[0062] In some embodiments, the cross-section of the storage tank 20 is configured as a zigzag structure to extend the liquid ammonia flow area and improve the liquid ammonia vaporization reaction efficiency. The heat source delivery channel 21 is located on the outer periphery of the storage tank 20 and is configured as a closed cavity structure. The heat source is configured as an electric heating component or high-pressure steam. Specifically, when the heat source is configured as an electric heating component such as an electric heating wire, it is directly embedded in the closed cavity. Then, the power cord is led out and connected to the frequency converter and power module to adjust the heating power of the electric heating component, thereby changing the heating temperature. It should be noted that the wiring hole of the power cord is not connected to the interior of the ammonia generator 1 to avoid ammonia leakage or the introduction of other media. When the heat source is configured as high-pressure steam, the input and output ends of the heat source delivery channel 21 pass through the outer shell of the ammonia generator 1 and are connected to the steam input device and steam recovery device through pipes and pressure regulating valves. The pressure regulating valves are used to precisely control the steam input pressure, thereby adjusting the liquid ammonia vaporization reaction efficiency.

[0063] In other embodiments, such as Figure 2 As shown, the storage tank 20 can also be configured as multiple strip-shaped grooves arranged in parallel, with the bottoms of adjacent strip-shaped grooves interconnected, such as by connecting them with pipes or by pre-setting them as an integrated structure. It should be noted that: in order to ensure uniform distribution of ammonia gas, a gas delivery channel is reserved at the center of the multiple storage tanks 20, so that the continuously generated ammonia gas can be evenly diffused into the catalytic enhancement reaction chamber 3 through the gas delivery channel to fully mix with the fresh water.

[0064] Furthermore, such as Figure 2 and Figure 3As shown, multiple nonlinear channels 22 are arranged horizontally side by side in the catalytic enhancement reaction chamber 3. The two ends of the nonlinear channels 22 are connected to the liquid ammonia vaporization chamber 2 and the ammonia water cooling chamber 4, respectively. This can extend the flow path of ammonia gas, thereby extending the contact time between ammonia gas and fresh water, promoting the full absorption of ammonia gas by fresh water. Furthermore, the ammonia water mixture output from two adjacent nonlinear channels 22 can further participate in the reaction, achieving a homogenization effect. Multiple sets of linear nozzles 23 are arranged at intervals or in a relative array on the side wall of the nonlinear channels 22. The liquid inlet end of the multiple sets of linear nozzles 23 is connected to the liquid outlet end of the reverse osmosis membrane purification system through the water distribution plate 32 and the water supply pipe. The installation interval of the multiple sets of linear nozzles 23 is such that when they spray fresh water, a multi-layered ammonia gas catalytic enhancement absorption reaction bed is formed in the nonlinear channels 22 in the vertical direction, which completely covers the cross-section of the nonlinear channels 22. This maximizes the contact area between ammonia gas and fresh water, accelerates the reaction rate, ensures full absorption of ammonia gas, reduces ammonia gas escape, and improves raw material utilization and reaction efficiency. It is worth noting that in the past, the slow reaction of ammonia gas could easily lead to the escape of ammonia gas around the equipment, causing discomfort to nearby personnel when inhaled. The water supply pipeline is connected to the circulating reaction pipeline 8, and a one-way valve 24 is installed at the outlet of the circulating reaction pipeline 8 to ensure that any ammonia water with an unqualified concentration flowing into the circulating reaction pipeline 8 flows back into the water supply pipeline for circulation and reaction, avoiding system pressure fluctuations and reaction disorders, and further ensuring the continuity and concentration stability of ammonia water production.

[0065] Furthermore, such as Figure 2 As shown, a multi-stage overflow weir 25 is sequentially arranged in the ammonia cooling chamber 4 along the ammonia flow direction. The primary overflow weir is connected to the outlet end of the nonlinear flow channel 22, and the bottom of the final overflow weir is connected to the inlet end of the buffer tank 7 through a connecting pipe and a primary pump group 6. The multi-stage overflow weir 25 can extend the residence time of the ammonia mixture in the cooling chamber and mix it step by step with the ammonia mixture retained in different overflow zones, which can effectively increase the heat exchange contact area, ensure that the ammonia is fully cooled to the preset temperature, and avoid the impact of high temperature on the stability of the ammonia and the subsequent storage quality. It is worth noting that compared with the previous overflow weir 25 structure from high to low, it not only slows down the flow rate of the ammonia mixture in the ammonia cooling chamber 4, but also places the inlet end of the ammonia cooling chamber 4 at the lowest position, which can greatly increase its mixing efficiency with the medium in the adjacent overflow zone. Figure 2 As shown, a baffle plate is installed downwards at the inlet end of the ammonia cooling chamber 4, and the bottom of the baffle plate is lower than the top of the final overflow weir, thereby forming a vortex zone at the inlet end of the ammonia cooling chamber 4 to accelerate the discharge rate of the pre-mixed ammonia mixture in the ammonia cooling chamber 4; the heat exchange pipe network 5 is sequentially laid at the bottom of the inner wall of the multi-stage overflow weir 25, and the flow direction of the cold source in the heat exchange pipe network 5 is opposite to and / or in the same direction as the flow direction of the ammonia in the multi-stage overflow weir 25, such as... Figure 2The serpentine pipe network structure shown can quickly dissipate reaction heat and ensure the stability of cooling effect. The liquid inlet end of the heat exchange pipe network 5 passes through the outer shell of the ammonia generator 1 and is connected to a cold source input unit. The liquid outlet end of the heat exchange pipe network 5 passes through the outer shell of the ammonia generator 1 and is connected to a heat source recovery unit, which facilitates the recovery and utilization of waste heat after heat exchange, such as for heat source supplementation for liquid ammonia vaporization or workshop heating, thereby reducing production energy consumption and improving the economy and environmental friendliness of production to support large-scale, high-yield continuous production.

[0066] Furthermore, such as Figure 2 As shown, the buffer tank 7 is equipped with two non-interconnected ammonia water qualified transfer chambers 26 and 27. The inlet ends of the qualified ammonia water transfer chambers 26 and 27 are connected to the outlet ends of the connecting pipelines, respectively. The outlet ends of both the qualified ammonia water transfer chambers 26 and 27 are connected to the inlet ends of the circulation reaction pipeline 8 and the ammonia water output pipeline 10. A fifth electronic valve 28 is installed at both the inlet and outlet ends of the qualified ammonia water transfer chamber 26. The opening condition of the fifth electronic valve 28 is that the ammonia water concentration detector 12 detects that the ammonia water input concentration is within the preset detection range. A sixth electronic valve 29 is installed at both the inlet and outlet ends of the 27 unqualified ammonia water transfer chamber. The opening condition of the sixth electronic valve 29 is that the ammonia water concentration detector 12 detects that the ammonia water input concentration exceeds the preset detection range. Thus, through the zoned transfer design, qualified and unqualified ammonia water can be separated in a timely and effective manner, avoiding cross-contamination and ensuring the quality stability of qualified ammonia water. At the same time, combined with the linkage control of electronic valves and concentration detection, automatic diversion of ammonia water can be achieved without manual intervention, improving the efficiency and accuracy of concentration control, and ensuring that unqualified ammonia water can quickly enter the circulating reaction pipeline 8, while qualified ammonia water can smoothly enter the storage stage, further ensuring production continuity and product qualification rate.

[0067] Furthermore, the pre-prepared ratio of fresh water to liquid ammonia is dynamically adjusted based on the real-time ammonia input concentration detected by the ammonia concentration detector 12. Specifically, when the ammonia concentration detector 12 detects that the ammonia input concentration exceeds the upper limit of the preset detection range, the input pressure and / or flow rate of liquid ammonia is gradually reduced, or the input pressure and / or flow rate of fresh water is increased, according to the preset parameter adjustment step size. When the ammonia concentration detector 12 detects that the ammonia input concentration exceeds the lower limit of the preset detection range, the input pressure and / or flow rate of fresh water is gradually reduced, or the input pressure and / or flow rate of liquid ammonia is increased, according to the preset parameter adjustment step size. The adjustment constraint condition for the pre-prepared ratio of fresh water to liquid ammonia is that the total input pressure and total input flow rate of fresh water and liquid ammonia are respectively within the preset ammonia output pressure and output flow rate range. Specifically, the input pressure / flow rate of liquid ammonia and fresh water, as well as the output pressure / flow rate of ammonia, are collected by pressure sensors and flow sensors pre-installed on the corresponding pipelines, and coordinated control is achieved through a control terminal. This method enables dynamic closed-loop control of the ratio of fresh water to liquid ammonia, allowing for rapid adjustment of raw material input parameters based on real-time ammonia concentration monitoring. This ensures the ammonia concentration remains stable within a preset range, improving product quality uniformity. Simultaneously, by constraining and controlling total pressure and total flow, it prevents system pressure and flow fluctuations caused by adjustments to raw material input parameters. This ensures stable operation of equipment such as the ammonia generator 1 and pump sets, preventing production interruptions or equipment damage due to sudden parameter changes, such as abnormal pressure increases.

[0068] In some embodiments, the above-mentioned intelligent collaborative control logic specifically includes: in the raw material pretreatment stage, the control terminal automatically adjusts the output pressure of the centrifugal booster pump 30 and the operating parameters of the precision filter 31 based on the concentrated water quality data uploaded in real time by the water quality detection sensor. At the same time, combined with the operating status of the reverse osmosis filter unit, it predicts the risk of clogging of the filter unit in advance. When the pressure difference before and after the reverse osmosis filter 13 is detected to reach 80-90% of the preset threshold, the backwashing pretreatment program is automatically started to switch the reverse osmosis filter unit to the shutdown maintenance mode to ensure stable freshwater output. In the reaction preparation stage, the control terminal, based on real-time data from the ammonia concentration detector 12, not only adjusts the input ratio of fresh water to liquid ammonia, but also simultaneously controls the input temperature of the heat source delivery channel 21 in the liquid ammonia vaporization chamber 2, the spray flow rate of the linear nozzles 23 in the catalytic enhancement reaction chamber 3, and the input flow rate of the cold source in the ammonia cooling chamber 4 to achieve multi-parameter coordinated control. For example, when the ammonia concentration is detected to be too low, while increasing the liquid ammonia input flow rate, the temperature of the heat source delivery channel 21 is appropriately increased to accelerate the liquid ammonia vaporization rate and increase the ammonia output. At the same time, the spray density of the linear nozzles 23 is adjusted to increase the contact area between fresh water and ammonia, such as by increasing the number of linear nozzles 23 used. (See details in [reference needed]). Figure 1The diagram shows that the number of linear nozzles 23 used is controlled in stages via valve groups to accelerate the reaction rate and simultaneously reduce the input of the cold source, preventing excessive heat loss from affecting reaction efficiency. Through multi-stage coordinated adjustment, the ammonia concentration can be quickly adjusted to the preset range, thereby improving the response speed and accuracy of ammonia concentration control. In the buffer storage stage, the control terminal monitors the ammonia input concentration in real time to achieve automatic ammonia diversion and circulation reaction. Combined with the output demand of the ammonia output pipeline 10 and the storage capacity of the storage tank, the output flow of the three-stage pump group 11 and the on / off status of the valve components are automatically adjusted to achieve orderly and graded storage of ammonia. At the same time, information such as the concentration, production time, and storage location of each batch of ammonia is recorded to form a traceable production ledger, which facilitates subsequent quality control and product traceability.

Claims

1. A method for continuous production of ammonia water with catalytic enhancement, characterized in that, Includes the following steps: S1. Raw material pretreatment: Use a reverse osmosis membrane system to purify concentrated water for continuous production and output of fresh water; S2. Ammonia water catalytic synthesis: Fresh water and liquid ammonia are continuously added to an ammonia water generator (1) according to a pre-prepared ratio. The ammonia water generator (1) is equipped with a liquid ammonia vaporization chamber (2), a catalytic enhancement reaction chamber (3), and an ammonia water cooling chamber (4) arranged in series from top to bottom. The liquid ammonia flows into the liquid ammonia vaporization chamber (2) and is converted into ammonia gas after heat absorption. The fresh water flows into the catalytic enhancement reaction chamber (3) and forms a multi-stage parallel ammonia gas catalytic enhancement absorption reaction bed along the flow direction of the ammonia gas. After the ammonia gas is completely absorbed by the fresh water, an ammonia water mixture is generated and flows into the ammonia water cooling chamber (4). The ammonia water cooling chamber... A heat exchange network (5) is provided in the chamber (4), which is used to cool the ammonia-water mixture to a preset temperature range; multiple nonlinear flow channels (22) are arranged side by side in the horizontal direction in the catalytic enhancement reaction chamber (3), and the two ends of the nonlinear flow channels (22) are respectively connected to the liquid ammonia vaporization chamber (2) and the ammonia-water cooling chamber (4); multiple sets of linear nozzles (23) are arranged at intervals or in a relative array on the side wall of the nonlinear flow channels (22), and the liquid inlet end of the multiple sets of linear nozzles (23) is connected to the liquid outlet end of the reverse osmosis membrane purification system through the water distribution plate (32) and the water supply pipe; S3. Automatic graded storage: The ammonia-water mixture cooled to a preset temperature range is fed into a buffer tank (7) through a connecting pipeline and a primary pump group (6). The output end of the buffer tank (7) is connected in parallel to the circulating reaction pipeline (8) and the ammonia water output pipeline (10). The circulating reaction pipeline (8) is connected to the catalytic enhancement reaction chamber (3) through a secondary pump group (9). The ammonia water output pipeline (10) is connected to multiple ammonia water storage tanks in sequence through a valve assembly via a tertiary pump group (11) to achieve graded storage. S4. Ammonia Concentration Control: The ammonia input concentration is detected in real time by an ammonia concentration detector (12) located at the input end of the buffer tank (7) and uploaded to the control terminal. The control terminal has a built-in intelligent collaborative control logic, which is configured to: compare and analyze the real-time detected ammonia input concentration with the preset preparation concentration, and control the control valve group at the output end of the buffer tank (7) to switch its output path according to the analysis results, thereby selectively connecting the circulating reaction pipeline (8) or the ammonia output pipeline (10) to achieve continuous production and precise concentration control of ammonia; wherein: When the real-time detected ammonia input concentration is consistent with the preset preparation concentration, select to connect the ammonia output pipeline (10). When the real-time detected ammonia input concentration is inconsistent with the preset preparation concentration, a parameter adjustment symbol is generated based on the concentration difference between the two, and the connected circulation reaction pipeline (8) is selected. At the same time, one or more of the following control logics are executed along the reverse adjustment direction of the parameter adjustment symbol: ① Adjust the fresh water flow rate output by the reverse osmosis membrane water purification system or the liquid ammonia input flow rate in the ammonia generator (1) according to the preset adjustment step length continuously or at intervals, so as to change the pre-prepared ratio of fresh water and liquid ammonia in the ammonia generator (1). ② Adjust the heating temperature in the liquid ammonia vaporization chamber (2) according to the preset adjustment step length continuously or at intervals to change the ammonia generation rate; ③ Adjust the number of ammonia catalytic enhancement absorption reaction beds in the catalytic enhancement reaction chamber (3) according to the preset adjustment step length or interval, so as to change the medium output parameters of the ammonia-water mixture; ④ The flow rate of the cold source in the heat exchange network (5) inside the ammonia cooling chamber (4) is dynamically adjusted based on the output temperature of the ammonia-water mixture.

2. The method for continuous catalytically enhanced ammonia production according to claim 1, characterized in that, The concentrated water input to the reverse osmosis membrane water purification system includes at least one or more of tap water, river water, and well water.

3. The method for continuous catalytically enhanced ammonia production according to claim 1, characterized in that, The reverse osmosis membrane purification system includes at least two sets of reverse osmosis filtration units. Each set of reverse osmosis filtration units includes a multi-stage reverse osmosis filter connected in series via pipes. The reverse osmosis filter (13) is filled with several segments of reverse osmosis membrane of a preset length. The input end of the primary reverse osmosis filter is connected to the output end of the concentrate delivery equipment via an input pipe and a first electronic valve (14). The output end of the final reverse osmosis filter is connected to the inlet end of the catalytic enhancement reaction chamber (3) via an output pipe and a second electronic valve (15). Pressure gauges are installed at the input end of the primary reverse osmosis filter and the output end of the final reverse osmosis filter, respectively. The pressure sensor, flow sensor and / or water quality sensor detect water data at the input end of the primary reverse osmosis filter and the output end of the final reverse osmosis filter in real time and upload it to the control terminal. The control terminal determines whether the currently received water data is within the normal range according to the preset standard data. When it exceeds the normal range, the reverse osmosis filter unit is adjusted to the shutdown maintenance mode and the corresponding first electronic valve (14) and second electronic valve (15) are closed. At the same time, the reverse osmosis filter unit in the standby state is switched to operation.

4. The method for continuous catalytically enhanced ammonia production according to claim 3, characterized in that, The input end of the primary reverse osmosis filter is connected in sequence to a precision filter (31) and a centrifugal booster pump (30). The input end of the precision filter (31) is equipped with a third electronic valve (16), which is opened and closed synchronously with the first electronic valve (14) and the second electronic valve (15).

5. The method for continuous catalytically enhanced ammonia production according to claim 3, characterized in that, The reverse osmosis filtration unit is provided with a backwashing pipeline, which includes a flushing pipe (17) and a drain pipe (18). The input end of the flushing pipe (17) is connected to the cleaning fluid supply unit, the output end of the flushing pipe (17) is connected to the output end of the final stage reverse osmosis filter, the input end of the drain pipe (18) is connected to the input end of the primary reverse osmosis filter, and the output end of the drain pipe (18) is connected to the waste liquid collection tank. A fourth electronic valve (19) is installed on both the flushing pipe (17) and the drain pipe (18). When the control terminal adjusts any one of the reverse osmosis filter units to the shutdown maintenance mode and closes the corresponding first electronic valve (14) and second electronic valve (15), the corresponding fourth electronic valve (19) is opened and the cleaning fluid supply unit is started. The cleaning fluid supply unit pumps several sets of cleaning solutions into the flushing pipe (17) in sequence according to the preset cleaning order, and flows in reverse through the multi-stage reverse osmosis filter (13) before being discharged from the sewage pipe (18), thereby realizing the automatic backwashing cleaning operation of the reverse osmosis filter (13). After cleaning is complete, adjust the reverse osmosis filter unit to standby mode. If the reverse osmosis filtration unit runs for less than a preset time during the current operating cycle, it will be adjusted to a fault state, and an early warning mechanism will be triggered to generate an alarm message.

6. The method for continuous catalytically enhanced ammonia production according to claim 1, characterized in that, The liquid ammonia vaporization chamber (2) is provided with several sets of storage tanks (20). The bottom of the inner wall of the storage tank (20) is connected to the output end of the liquid ammonia input pipe. The top opening side of the storage tank (20) is connected to the catalytic enhancement reaction chamber (3). A heat source conveying channel (21) is provided on the outer periphery of the storage tank (20). A heat source with adjustable temperature is introduced into the heat source conveying channel (21) to dynamically adjust the vaporization pressure of liquid ammonia in the storage tank (20). The actual liquid ammonia level in the storage tank (20) is lower than the preset liquid level line.

7. The method for continuous catalytically enhanced ammonia production according to claim 1, characterized in that, When the installation interval of the multiple sets of linear nozzles (23) is sufficient to spray fresh water, an ammonia catalytic enhanced absorption reaction bed is formed in the nonlinear flow channel (22) in the vertical direction with multiple layers of spaced arrangement and completely covering the cross-section of the nonlinear flow channel (22). The water supply pipeline is connected to the circulating reaction pipeline (8), and a one-way valve (24) is installed at the outlet end of the circulating reaction pipeline (8) to ensure that the ammonia water with unqualified concentration that is introduced into the circulating reaction pipeline (8) flows back into the water supply pipeline for circulating reaction.

8. The method for continuous catalytically enhanced ammonia production according to claim 7, characterized in that, The ammonia cooling chamber (4) is provided with multiple overflow weirs (25) in sequence along the ammonia flow direction. The primary overflow weir is connected to the liquid outlet of the nonlinear flow channel (22), and the bottom of the final overflow weir is connected to the liquid inlet of the buffer tank (7) through a connecting pipe and a primary pump group (6). The heat exchange network (5) is laid sequentially on the bottom of the inner wall of the multi-stage overflow weir (25), and the flow direction of the cold source in the heat exchange network (5) is opposite to and / or the same as the flow direction of ammonia in the multi-stage overflow weir (25). The inlet end of the heat exchange network (5) passes through the outer shell of the ammonia generator (1) and is connected to a cold source input unit. The outlet end of the heat exchange network (5) passes through the outer shell of the ammonia generator (1) and is connected to a heat source recovery unit.

9. The method for continuous catalytically enhanced ammonia production according to claim 1, characterized in that, The buffer tank (7) is provided with a non-interconnected ammonia water qualified transfer chamber (26) and ammonia water unqualified transfer chamber (27). The inlet ends of the ammonia water qualified transfer chamber (26) and the ammonia water unqualified transfer chamber (27) are respectively connected to the outlet end of the connecting pipeline. The outlet ends of the ammonia water qualified transfer chamber (26) and the ammonia water unqualified transfer chamber (27) are both connected to the inlet ends of the circulating reaction pipeline (8) and the ammonia water output pipeline (10). The inlet and outlet of the ammonia water qualified transfer chamber (26) are both equipped with a fifth electronic valve (28). The opening condition of the fifth electronic valve (28) is that the ammonia water concentration detector (12) detects that the ammonia water input concentration is within the preset detection range. The inlet and outlet of the ammonia water unqualified transfer chamber (27) are both equipped with a sixth electronic valve (29). The opening condition of the sixth electronic valve (29) is that the ammonia water concentration detector (12) detects that the ammonia water input concentration exceeds the preset detection range.

10. A method for continuous catalytically enhanced ammonia production according to claim 1, characterized in that, The pre-mixed ratio of fresh water to liquid ammonia is dynamically adjusted based on the ammonia input concentration detected in real time by the ammonia concentration detector (12), specifically including: When the ammonia concentration detector (12) detects that the ammonia input concentration exceeds the preset detection range upper limit, it gradually reduces the input pressure and / or flow rate of liquid ammonia according to the preset parameter adjustment step size, or increases the input pressure and / or flow rate of fresh water. When the ammonia concentration detector (12) detects that the ammonia input concentration exceeds the preset detection range lower limit, it gradually reduces the input pressure and / or flow rate of fresh water or increases the input pressure and / or flow rate of liquid ammonia according to the preset parameter adjustment step size. The adjustment constraint for the pre-prepared ratio of the fresh water and the liquid ammonia is as follows: The total input pressure and total input flow rate of the fresh water and the liquid ammonia are respectively within the preset range of the ammonia water output pressure and output flow rate.

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