Ammonia gas recovery device for synthesis ammonia production

Abstract

The invention discloses an ammonia gas recovery device for synthesis ammonia production, and relates to the technical field of ammonia gas recovery, the ammonia gas recovery device comprises a recovery tower, the bottom of the recovery tower is communicated with an input pipe, a water tank is installed outside the recovery tower, spray liquid is stored in the water tank, and the top of the recovery tower is symmetrically communicated with output pipes. A dynamic spraying mechanism is arranged in the recovery tower, a water conveying piece is installed below a driving motor, by means of cooperation of a fixed spraying pipe and a movable spraying pipe, targeted coverage of different areas in the recovery tower can be achieved, and coverage blind areas possibly existing in a traditional single spraying mode are avoided; on one hand, the movable spray pipe regularly rotates in a reciprocating manner, so that the limitation of static spraying is broken through, the disturbance of gas and liquid phases is enhanced through dynamic spraying, the contact area and the mass transfer efficiency are increased, and the absorption efficiency of ammonia gas is improved. The recovery concentration and the recovery rate of the ammonia gas are favorably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ammonia recovery, and more particularly to an ammonia recovery device for ammonia synthesis production. Background Art

[0002] The ammonia recovery device for ammonia synthesis production aims to improve resource utilization efficiency and reduce production costs. During the ammonia synthesis process, if the ammonia-containing mixed gas is directly discharged, it will not only cause waste of ammonia resources but also pollute the environment. The ammonia recovery device can effectively reduce ammonia emissions, improve ammonia recovery rate, reduce the production costs of enterprises, and at the same time help achieve the goal of green and low-carbon production.

[0003] However, the following defects still exist in the specific use of the existing technology: 1. Compared with the ammonia recovery devices in the existing technology, most of them adopt a single type of nozzle with a fixed installation inside. The layout mode of the nozzles is fixed, and the spraying angle and range lack the ability of dynamic adjustment. This static structure design makes the spraying path and coverage area of the nozzles unable to be changed after installation, making it difficult to adapt to the gas distribution differences in different regions inside the recovery tower. At the same time, limited by the traditional design concept, the consideration of the dynamic disturbance of the gas-liquid two-phase is lacking, and only relying on the natural contact between the gas and the spraying liquid for mass transfer, it is difficult to fully exert the mass transfer efficiency; The limitations of the single static spraying structure bring multiple negative effects to ammonia recovery. First of all, the fixed spraying mode is extremely easy to form spraying blind spots inside the recovery tower, especially at the corners of the tower body and the areas where the gas flow rate changes suddenly. A large amount of ammonia-containing gas cannot fully contact with the spraying liquid, resulting in a significant decrease in the ammonia absorption efficiency. This incomplete absorption problem directly affects the overall recovery rate, causes waste of ammonia resources, and increases production costs. Secondly, due to the lack of a dynamic disturbance mechanism, the gas-liquid two-phase only relies on natural diffusion for mass transfer, and the actual contact area is far lower than the theoretical value, making the mass transfer process slow and inefficient. This not only makes it difficult for the recovered ammonia concentration to reach the ideal standard, increasing the processing difficulty of the subsequent purification process; but also may cause some ammonia to be discharged with the tail gas due to insufficient mass transfer, resulting in environmental pollution, and thus reducing the economy and practicability of the equipment.

[0004] 2. At the same time, when the ammonia recovery device in the prior art processes dust-containing ammonia-containing gas, the filter plate structure is also designed to be relatively simple. On the one hand, the filter plate usually adopts a fixedly installed plane structure, which only relies on static filtration to intercept particulate matter, and has no function of actively cleaning impurities. As the processing time increases, the particles in the dust-containing ammonia-containing gas continue to accumulate on the surface of the filter plate, and the pressure of the gas continuously passing through the filter plate will compact these particles, further aggravating the blockage. On the other hand, the filter plate and other parts of the equipment are mostly connected in a rigid manner. The processing errors and installation errors that are difficult to avoid during the manufacturing and installation process, as well as the slight deformation caused by temperature changes, mechanical vibrations, etc. during the operation of the equipment, will cause stress concentration on the filter plate and the connecting parts. In addition, in terms of airflow guidance design, the traditional device handles the airflow under the filter plate in a relatively extensive manner, and does not effectively guide and optimize the airflow, resulting in uneven flow velocity and flow direction of the dust-containing ammonia-containing gas before passing through the filter plate. Larger particulate matter will directly impact the filter plate at a higher speed, accelerating the blockage of the filter plate, and the uneven airflow will also cause excessive local filtration load, reducing the overall filtration efficiency. First, the continuous accumulation and blockage of impurities on the surface of the filter plate will significantly increase the resistance to gas passage, causing the internal pressure of the equipment to increase, and then affecting the stable operation of the entire recovery system due to excessive pressure, and even causing equipment failure. Secondly, the filtration efficiency drops significantly after the filter plate is blocked, and some dust-containing and ammonia-containing gases cannot be effectively filtered and absorbed, reducing the quality and efficiency of ammonia recovery, while also increasing the burden of subsequent treatment processes. Furthermore, the stress concentration problem caused by the rigid connection will accelerate the damage of the filter plate and connecting parts and shorten the service life of the equipment. Frequent maintenance and replacement of parts not only increase maintenance costs, but also cause equipment downtime to be extended, affecting production progress. Finally, the uneven airflow distribution under the filter plate makes the filtration pressures in different areas of the filter plate vary greatly, further aggravating the local blockage, and is not conducive to the full contact between the dust-containing and ammonia-containing gas and the absorption liquid, reducing the overall recovery effect.

[0005] In view of this, the present invention proposes an ammonia recovery device for synthetic ammonia production to make up for and improve the deficiencies of the prior art. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides an ammonia recovery device for synthetic ammonia production to solve the technical problems raised in the above background technology.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: an ammonia recovery device for synthetic ammonia production, comprising a recovery tower, the bottom of the recovery tower is connected to an input pipe, a water tank is installed outside the recovery tower, and a spray liquid is stored inside the water tank, the top of the recovery tower is symmetrically connected to an output pipe, and a dynamic spray mechanism is arranged inside the recovery tower; The dynamic spraying mechanism includes a driving motor installed at the top of the recovery tower. A water delivery member is installed below the driving motor. Fixed spray pipes and movable spray pipes are evenly installed below the water delivery member. The fixed spray pipes and the movable spray pipes cooperate with each other to provide a full-coverage spraying area inside the recovery tower.

[0008] Further, a limiting frame is fixedly connected to the top of the recovery tower. The driving motor is movably connected to the top of the recovery tower through the limiting frame. The driving motor is specifically a stepping motor, and its output shaft can perform reciprocating rotation in the clockwise and counterclockwise directions after being started.

[0009] Further, the water delivery member is integrally composed of no less than three circular ring bins. The three circular ring bins are kept connected through branch pipes, and the outermost circular ring bin of the water delivery member is kept connected to the water tank.

[0010] Further, the fixed spray pipes are fixedly connected to the lower surfaces of the two inner circular ring bins of the water delivery member. The movable spray pipes are rotatably connected to the lower surface of the outermost circular ring bin of the water delivery member, and both the fixed spray pipes and the movable spray pipes are kept connected to the water delivery member.

[0011] Further, the lower part of the movable spray pipe is spherical, and circular holes are evenly opened at the spherical position of the movable spray pipe. Driven gears are fixedly connected to the outer walls of the movable spray pipes. A driving gear ring is externally engaged with the driven gears, and the driving gear ring is rotatably connected to the inner side wall of the recovery tower.

[0012] Further, a connecting frame is fixedly connected to the upper surface of the driving gear ring. The end of the connecting frame away from the driving gear ring is slidably connected to the outer wall of the output shaft end of the driving motor.

[0013] Further, a vibration filtering mechanism is arranged inside the recovery tower. The vibration filtering mechanism includes an assembly shaft sleeved outside the output shaft end of the driving motor. A cross shaft is fixedly connected to the lower surface of the assembly shaft. A threaded shaft is installed below the assembly shaft. A cross groove is opened at the position corresponding to the cross shaft on the upper surface of the threaded shaft. The assembly shaft and the threaded shaft form a sliding connection through the cross shaft and the cross groove.

[0014] Further, a threaded sleeve ring is threadedly connected to the outer wall of the threaded shaft. A ball screw structure is formed between the threaded shaft and the threaded sleeve ring, and initially, the threaded sleeve ring is located at the uppermost end of the threaded shaft.

[0015] Further, fixing rods are symmetrically fixedly connected to the lower surface of the threaded sleeve ring. The end of the fixing rod away from the threaded sleeve ring is fixedly connected to a curved filter plate. A diversion group is fixedly connected to the lower surface of the curved filter plate. The diversion group is integrally composed of a plurality of conical columns.

[0016] Furthermore, a double-ring plate is installed on the outer wall of the curved surface filter plate. The double-ring plate is composed of two upper and lower circular ring pieces. The curved surface filter plate is fixedly connected to the upper circular ring piece of the double-ring plate. A sliding shaft is evenly and slidably connected inside the double-ring plate. Springs are sleeved on the outer walls of the sliding shafts. The two ends of the springs are fixedly connected to the upper circular ring piece and the lower circular ring piece respectively.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By introducing a dynamic spraying mechanism, on the one hand, through the division of labor and cooperation between the fixed spray pipe and the movable spray pipe, targeted coverage of different areas inside the recovery tower can be achieved, avoiding the coverage blind spots that may exist in the traditional single spraying method, ensuring that the ammonia-containing gas can fully contact the spraying liquid at all positions inside the tower, and greatly improving the ammonia absorption efficiency. On the other hand, the regular reciprocating rotation of the movable spray pipe breaks the limitations of static spraying. Through dynamic spraying, the disturbance of the gas-liquid two-phase is enhanced, the contact area and mass transfer efficiency are increased, which helps to improve the recovery concentration and recovery rate of ammonia.

[0018] Among them, the lower part of the movable spray pipe is spherical. During the actual rotation process, the spherical shape can reduce the fluid resistance of the movable spray pipe during rotation, make the rotation of the spray pipe smoother and more flexible, reduce the equipment wear and energy consumption increase problems caused by excessive resistance, thereby extending the service life of the equipment and reducing the operation cost. At the same time, the spherical shape helps the spraying liquid to form a more uniform dispersion state at the outlet of the spray pipe, avoiding the situation of over-dense or over-sparse local spraying, and enhancing the absorption effect of ammonia outside the recovery tower.

[0019] Among them, the driving motor is movably connected to the top position of the recovery tower through a limit frame. In practical applications, this convenient disassembly and installation connection method greatly reduces the maintenance difficulty and time cost of the equipment. When the equipment fails or needs to be overhauled or components need to be replaced, the staff can quickly disassemble the driving motor from the top of the recovery tower without complex tools and cumbersome operation procedures, effectively reducing the downtime and ensuring the continuity of production. In addition, the movable connection method also facilitates the driving motor to flexibly adjust the position and angle of the motor according to the actual operation requirements, ensuring that the dynamic spraying structure always maintains the best working state, and further improving the operation stability and reliability of the entire ammonia recovery device.

[0020] (2)When dealing with dust- and ammonia-containing gases compared with the prior art, impurities are likely to accumulate on the surface of the filter plate, leading to blockage. While the driving motor is operating, this device converts rotational motion into linear motion through a ball screw structure composed of a threaded shaft and a threaded collar, driving the curved filter plate to perform reciprocating linear motion, and using the cooperation of a spring and a sliding shaft to cause local vibration of the filter plate, effectively preventing the accumulation of particulate matter on the surface of the filter plate, keeping the filter plate always in good permeability, greatly extending the cleaning cycle and service life of the filter plate. At the same time, the combination of reciprocating linear motion and vibration avoids the problem of uneven air flow distribution caused by local blockage.

[0021] Among them, the sliding connection mode between the assembly shaft and the threaded shaft is composed of a cross shaft and a cross groove. In actual use, the cooperation of the cross shaft and the cross groove allows a certain axial displacement and angular deviation between the assembly shaft and the threaded shaft, which can effectively compensate for the machining error, installation error or minor deformation generated during the operation of the equipment, avoiding the stress concentration and component damage problems that may be caused by rigid connection, extending the service life of the equipment, and ensuring the long-term stable operation of the system.

[0022] Among them, the diversion group fixedly connected to the lower surface of the curved filter plate is composed of a combination of multiple conical columns. The conical column structure can change the flow state of the gas below the filter plate, making the dust- and ammonia-containing gas form a more uniform distribution before passing through the filter plate. Moreover, the tip of the conical column can play a certain guiding role for the particulate matter in the gas flow, making larger particles easier to be intercepted on the surface of the filter plate instead of directly impacting the filter plate and causing blockage, further enhancing the anti-blocking ability of the filter plate.

[0023] (3)The washing effect of the dynamic spraying mechanism on the ammonia-containing gas can remove most of the ammonia and larger particle impurities, reducing the burden of the subsequent filtration process; the vibration and reciprocating motion of the vibration filtration structure not only prevent its own blockage, but also make the liquid film distribution on the surface of the filter plate more uniform, further enhancing the absorption effect of the residual ammonia and improving the ammonia recovery efficiency. This linkage also realizes the efficient utilization of the equipment space. By using the same driving motor to achieve two functions, it simplifies the equipment structure, reduces energy consumption and equipment investment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the front perspective structural schematic diagram of the present invention; Figure 2 is the internal perspective structural schematic diagram of the recovery tower of the present invention; Figure 3 is the perspective structural schematic diagram of the dynamic spraying mechanism of the present invention; Figure 4 is the top perspective structural schematic diagram of the dynamic spraying mechanism of the present invention; Figure 5 of the present inventionFigure 4 Schematic diagram of the partial enlarged three-dimensional structure at position A in the middle; Figure 6 Schematic diagram of the bottom three-dimensional structure of the dynamic spraying mechanism of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the vibration filtering mechanism of the present invention; Figure 8 Exploded view of the vibration filtering mechanism of the present invention; Figure 9 Schematic diagram of the three-dimensional structure of the curved filter plate of the present invention; The reference numerals in the figure are: 1. Recovery tower; 11. Input pipe; 12. Water tank; 13. Output pipe; 2. Dynamic spraying mechanism; 21. Limit frame; 22. Driving motor; 23. Water delivery member; 24. Fixed spray pipe; 25. Movable spray pipe; 2501. Round hole; 26. Driven gear; 27. Driving gear ring; 28. Connecting frame; 3. Vibration filtering mechanism; 31. Assembly shaft; 32. Cross shaft; 33. Cross groove; 34. Threaded shaft; 35. Threaded sleeve ring; 36. Fixed rod; 37. Curved filter plate; 38. Diversion group; 39. Double ring plate; 310. Sliding shaft; 311. Spring. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention; It should be noted that the structures and working principles of the above-mentioned recovery tower 1, input pipe 11, water tank 12, output pipe 13 and other devices belong to the prior art and will not be elaborated here.

[0026] Embodiment 1 Please refer to Figures 1-9 As shown, an ammonia recovery device for ammonia synthesis production includes a recovery tower 1. The bottom of the recovery tower 1 is connected to an input pipe 11. A water tank 12 is installed outside the recovery tower 1. The inside of the water tank 12 stores spraying liquid. The top of the recovery tower 1 is symmetrically connected to output pipes 13. A dynamic spraying mechanism 2 is arranged inside the recovery tower 1; The dynamic spraying mechanism 2 includes a driving motor 22 installed at the top of the recovery tower 1. A water delivery member 23 is installed below the driving motor 22. Fixed spray pipes 24 and movable spray pipes 25 are evenly installed below the water delivery member 23. The fixed spray pipes 24 and the movable spray pipes 25 cooperate with each other to provide a full-coverage spraying area inside the recovery tower 1.

[0027] It should be noted that a limit frame 21 is fixedly connected to the top of the recovery tower 1, and the driving motor 22 is movably connected to the top position of the recovery tower 1 through the limit frame 21. The driving motor 22 is specifically a stepping motor, and its output shaft can perform reciprocating rotation in the clockwise and counterclockwise directions after starting. The water delivery member 23 is integrally composed of no less than three circular ring bins. The three circular ring bins are kept connected through branch pipes, and the outermost circular ring bin of the water delivery member 23 is kept connected to the water tank 12. The fixed spray pipe 24 is fixedly connected to the lower surfaces of the two inner circular ring bins in the water delivery member 23. The movable spray pipe 25 is rotatably connected to the lower surface of the outermost circular ring bin in the water delivery member 23, and both the fixed spray pipe 24 and the movable spray pipe 25 are kept connected to the water delivery member 23. The lower part of the movable spray pipe 25 is spherical, and circular holes 2501 are evenly formed at the spherical position in the movable spray pipe 25. Driven gears 26 are fixedly connected to the outer walls of the movable spray pipe 25. A driving gear ring 27 is externally engaged with the driven gears 26. The driving gear ring 27 is rotatably connected to the inner side wall of the recovery tower 1. A connecting frame 28 is fixedly connected to the upper surface of the driving gear ring 27. One end of the connecting frame 28 away from the driving gear ring 27 is slidably connected to the outer wall of the output shaft end of the driving motor 22.

[0028] Specifically, during the operation of the ammonia recovery device, each component works together to achieve efficient ammonia recovery. First, the ammonia-containing gas enters the tower through the input pipe 11 at the bottom of the recovery tower 1. At the same time, the spray liquid stored in the water tank 12 gradually flows into the inner ring bin of the water delivery member 23 through the connecting pipe between the outermost ring bin of the water delivery member 23 and the water tank 12 by virtue of the pressure of the delivery pump. Since the three ring bins are kept connected through the branch pipes, the spray liquid is evenly distributed in the water delivery member 23 and is respectively delivered to the fixed spray pipe 24 and the movable spray pipe 25. When the drive motor 22 is started, its output shaft begins to rotate regularly in a reciprocating form of clockwise and counterclockwise. During this process, the rotation of the output shaft of the drive motor 22 first transmits power through the connecting frame 28. One end of the connecting frame 28 away from the output shaft of the drive motor 22 is fixedly connected to the drive gear ring 27, and the other end slides on the output shaft, which enables the drive gear ring 27 to rotate stably in a circular motion on the inner side wall of the recovery tower 1. As the drive gear ring 27 rotates, the driven gear 26 meshing with it rotates accordingly. The driven gear 26 is fixedly installed on the outer wall of the movable spray pipe 25, thereby driving the movable spray pipe 25 to rotate regularly in a reciprocating manner around its own axis. Relying on the spherical shape design at the lower part of the movable spray pipe 25, the fluid resistance it receives during rotation is significantly reduced, making the rotation smoother and more flexible. At the same time, the uniformly opened round holes 2501 at the spherical position can enable the spray liquid to be sprayed in a uniformly dispersed state, effectively covering the outer area of the recovery tower 1. Since the fixed spray pipe 24 is directly fixedly connected to the lower surfaces of the two inner ring bins in the water delivery member 23 and does not displace with the rotation of the drive motor 22 and always remains stationary, it continuously sprays the innermost area of the recovery tower 1. Through the division of labor and cooperation between the fixed spray pipe 24 and the movable spray pipe 25, the fixed spray pipe 24 is responsible for spraying the central area of the recovery tower 1, and the movable spray pipe 25 dynamically covers the outer area. The two cooperate with each other to achieve full-coverage spraying of the internal space of the recovery tower 1. During the upward flow of the ammonia-containing gas, it can fully contact the spray liquid in each area, and ammonia is quickly dissolved in the spray liquid, thereby greatly improving the ammonia absorption efficiency. The spray liquid after absorbing ammonia falls to the bottom of the recovery tower 1 for subsequent treatment, and the purified gas is discharged from the output pipes 13 symmetrically arranged at the top of the recovery tower 1 to complete the entire ammonia recovery process.

[0029] Please refer to Figures 1-9 As shown, a vibration filtering mechanism 3 is arranged inside the recovery tower 1. The vibration filtering mechanism 3 includes a fitting shaft 31 sleeved outside the output shaft end of the drive motor 22. The lower surface of the fitting shaft 31 is fixedly connected with a cross shaft 32. A threaded shaft 34 is installed below the fitting shaft 31. A cross groove 33 is opened on the upper surface of the threaded shaft 34 at the position corresponding to the cross shaft 32. A sliding connection is formed between the fitting shaft 31 and the threaded shaft 34 through the cross shaft 32 and the cross groove 33.

[0030] It should be noted that a threaded collar 35 is threadedly connected to the outer wall of the threaded shaft 34. A ball screw structure is formed between the threaded shaft 34 and the threaded collar 35. In the initial state, the threaded collar 35 is located at the uppermost end of the threaded shaft 34. Fixed rods 36 are symmetrically and fixedly connected to the lower surface of the threaded collar 35. The end of the fixed rod 36 away from the threaded collar 35 is fixedly connected to a curved filter plate 37. A diversion group 38 is fixedly connected to the lower surface of the curved filter plate 37. The diversion group 38 is integrally composed of a plurality of conical columns. A double-ring plate 39 is installed on the outer wall of the curved filter plate 37. The double-ring plate 39 is composed of an upper and a lower circular ring piece. The curved filter plate 37 is fixedly connected to the upper circular ring piece in the double-ring plate 39. Slide shafts 310 are evenly and slidably connected inside the double-ring plate 39. Springs 311 are sleeved on the outer walls of the slide shafts 310. The two ends of the springs 311 are respectively fixedly connected to the upper circular ring piece and the lower circular ring piece.

[0031] Specifically, when the ammonia recovery device is operating, after the drive motor 22 is started, its output shaft starts to rotate. Since the assembly shaft 31 is sleeved outside the output shaft end of the drive motor 22, the assembly shaft 31 will rotate together with the output shaft of the drive motor 22. Since a cross shaft 32 is fixedly connected to the lower surface of the assembly shaft 31 and a threaded shaft 34 is installed below the assembly shaft 31, and a cross groove 33 is provided at the position corresponding to the cross shaft 32 on the upper surface of the threaded shaft 34, a sliding connection is formed between the assembly shaft 31 and the threaded shaft 34 through the cross shaft 32 and the cross groove 33. Therefore, after the drive motor 22 is installed, the assembly shaft 31 and the threaded shaft 34 are also in an embedded contact state, as specifically shown in Figure 7 As shown, and this sliding connection method allows the threaded shaft 34 to rotate following the assembly shaft 31 and can, to a certain extent, compensate for possible axial displacements and angular deviations.

[0032] With the continuous rotation of the output shaft of the drive motor 22, the threaded shaft 34 is driven to rotate. Since a ball screw structure is formed between the threaded shaft 34 and the threaded collar 35 and the threaded collar 35 is located at the uppermost end of the threaded shaft 34 in the initial state, when the threaded shaft 34 rotates, the threaded collar 35 will perform a reciprocating linear motion up and down on the threaded shaft 34. Fixed rods 36 are symmetrically and fixedly connected to the lower surface of the threaded collar 35. When the threaded collar 35 moves up and down, the curved filter plate 37 will be driven to perform a reciprocating linear motion up and down through the fixed rods 36. Among them, a double-ring plate 39 is installed on the outer wall of the curved filter plate 37. The double-ring plate 39 is composed of an upper and a lower circular ring piece, and the curved filter plate 37 is fixedly connected to the upper circular ring piece in the double-ring plate 39. Slide shafts 310 are evenly and slidably connected inside the double-ring plate 39. Springs 311 are sleeved on the outer walls of the slide shafts 310. The two ends of the springs 311 are respectively fixedly connected to the upper circular ring piece and the lower circular ring piece. When the curved filter plate 37 moves up and down, under the action of the springs 311 and the slide shafts 310, the curved filter plate 37 will experience local vibration.

[0033] A diversion group 38 is fixedly connected to the lower surface of the curved filter plate 37. The diversion group 38 is integrally composed of a plurality of conical columns. When the ammonia-containing dusty gas passes through the curved filter plate 37, the diversion group 38 can change the flow state of the gas below the filter plate, making the ammonia-containing dusty gas form a more uniform distribution before passing through the filter plate. Through the above movement process, the vibration filtering mechanism 3 can effectively prevent the accumulation of particulate matter on the surface of the curved filter plate 37, keep the filter plate always in good permeability, greatly extend the cleaning cycle and service life of the filter plate. At the same time, the combination of the reciprocating linear motion and vibration avoids the problem of uneven gas flow distribution caused by local blockage.

[0034] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ammonia recovery device for ammonia synthesis production, comprising a recovery tower (1), a bottom of the recovery tower (1) is communicated with an input pipe (11), a water tank (12) is installed outside the recovery tower (1), spray liquid is stored inside the water tank (12), and output pipes (13) are symmetrically communicated with a top of the recovery tower (1), characterized in that: A dynamic spraying mechanism (2) is arranged inside the recovery tower (1); The dynamic spraying mechanism (2) includes a driving motor (22) installed at the top of the recovery tower (1). A water delivery member (23) is installed below the driving motor (22). Fixed spray pipes (24) and movable spray pipes (25) are evenly installed below the water delivery member (23). The fixed spray pipes (24) and the movable spray pipes (25) cooperate with each other to provide a full-coverage spraying area inside the recovery tower (1).

2. The ammonia recovery device for ammonia synthesis production according to claim 1, characterized in that: A limiting frame (21) is fixedly connected to the top of the recovery tower (1). The driving motor (22) is movably connected to the top of the recovery tower (1) through the limiting frame (21). The driving motor (22) is specifically a stepping motor, and its output shaft can rotate reciprocally clockwise and counterclockwise after starting.

3. An ammonia recovery device for ammonia synthesis production according to claim 1, characterized in that: The water delivery member (23) is integrally composed of no less than three circular ring bins. The three circular ring bins are kept connected through branch pipes, and the outermost circular ring bin of the water delivery member (23) is kept connected to the water tank (12).

4. An ammonia recovery device for ammonia synthesis production according to claim 1, characterized in that: The fixed spray pipes (24) are fixedly connected to the lower surfaces of the two inner circular ring bins in the water delivery member (23). The movable spray pipes (25) are rotatably connected to the lower surface of the outermost circular ring bin in the water delivery member (23), and both the fixed spray pipes (24) and the movable spray pipes (25) are kept connected to the water delivery member (23).

5. An ammonia recovery device for ammonia synthesis production according to claim 1, characterized in that: The lower part of the movable spray pipe (25) is spherical, and circular holes (2501) are evenly opened at the spherical position of the movable spray pipe (25). Driven gears (26) are fixedly connected to the outer walls of the movable spray pipes (25). A driving gear ring (27) is externally engaged with the driven gears (26), and the driving gear ring (27) is rotatably connected to the inner side wall of the recovery tower (1).

6. The ammonia recovery device for ammonia synthesis production according to claim 5, characterized in that: A connecting frame (28) is fixedly connected to the upper surface of the driving gear ring (27). One end of the connecting frame (28) away from the driving gear ring (27) is slidably connected to the outer wall of the output shaft end of the driving motor (22).

7. An ammonia recovery device for ammonia synthesis production according to claim 1, characterized in that: A vibration filtering mechanism (3) is arranged inside the recovery tower (1). The vibration filtering mechanism (3) includes an assembly shaft (31) sleeved outside the output shaft end of the driving motor (22). A cross shaft (32) is fixedly connected to the lower surface of the assembly shaft (31). A threaded shaft (34) is installed below the assembly shaft (31). A cross groove (33) is opened at the position corresponding to the cross shaft (32) on the upper surface of the threaded shaft (34). The assembly shaft (31) and the threaded shaft (34) are slidably connected through the cross shaft (32) and the cross groove (33).

8. An ammonia recovery device for ammonia synthesis production according to claim 7, characterized in that: A threaded sleeve ring (35) is threadedly connected to the outer wall of the threaded shaft (34). A ball screw structure is formed between the threaded shaft (34) and the threaded sleeve ring (35), and initially, the threaded sleeve ring (35) is located at the uppermost end of the threaded shaft (34).

9. An ammonia recovery device for ammonia synthesis production according to claim 8, characterized in that: The lower surface of the threaded collar (35) is symmetrically and fixedly connected with fixing rods (36). One end of the fixing rod (36) far away from the threaded collar (35) is fixedly connected with a curved filter plate (37). The lower surface of the curved filter plate (37) is fixedly connected with a diversion group (38), and the whole diversion group (38) is composed of a combination of a plurality of conical columns.

10. An ammonia recovery device for ammonia synthesis production according to claim 9, characterized in that: A double-ring plate (39) is installed on the outer wall of the curved filter plate (37). The double-ring plate (39) is composed of an upper and a lower circular ring plate. The curved filter plate (37) is fixedly connected with the upper circular ring plate in the double-ring plate (39). The inside of the double-ring plate (39) is evenly and slidably connected with sliding shafts (310). Springs (311) are sleeved on the outer walls of the sliding shafts (310), and the two ends of the springs (311) are fixedly connected with the upper circular ring plate and the lower circular ring plate respectively.

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