A recovery column for ammonium bicarbonate production

Abstract

This utility model relates to a recovery tower for ammonium bicarbonate production, including a main tower with an inlet, an outlet, and a fixed plate. The main tower also has a cleaning section, which includes a three-way pipe, a water spray mechanism, and a circulating pump. One end of the three-way pipe is connected to the main tower, and the other end is connected to a control valve. The control valve is connected to the circulating pump via a pipe. The circulating pump is mounted on the fixed plate and is connected to the water spray mechanism, which is located between the inner and outer sides of the main tower. One end of the three-way pipe is connected to a control valve, which is connected to the pipe via another pipe. Both pipes are equipped with filters, and a flow meter is installed on pipe. Through the design of the cleaning section, filters, and flow meter, if the filters become clogged during operation, normal operation can be resumed directly by adjusting the control valve in the cleaning section, without requiring a shutdown of the ammonium bicarbonate production system.

Description

Technical Field

[0001] This utility model relates to the field of ammonium bicarbonate preparation technology, specifically to a recovery tower for ammonium bicarbonate production. Background Technology

[0002] Ammonium bicarbonate (NH4HCO3) is a white crystalline compound, commonly known as "ammonium bicarbonate". It has an ammonia odor, is easily soluble in water, and decomposes into ammonia, water and carbon dioxide when heated. In agriculture, it is used as a quick-acting nitrogen fertilizer (containing about 17.7% nitrogen), and needs to be applied deep to prevent volatilization. In the food industry, it is used as a leavening agent in baking and needs to be stored in a sealed, light-proof container.

[0003] In the production of ammonium bicarbonate using high-concentration CO2, it is often necessary to dilute the residual CO2 with dilute ammonia water in the recovery tower. To ensure the concentration of ammonium bicarbonate, existing recovery towers are equipped with a cleaning section. The filter section effectively filters impurities in the dilute ammonia water in the recovery tower, and then the filtered dilute ammonia water is used in conjunction with a nozzle to further treat the CO2. However, the filter section in the existing recovery tower cleaning section cannot be replaced or maintained during the ammonium bicarbonate production process. If severe clogging of the filter section is found during the ammonium bicarbonate production process, the entire production system must be stopped and the filter section must be cleaned before restarting. This affects the smooth operation of the ammonium bicarbonate production system and is not conducive to the efficient production of ammonium bicarbonate, which needs to be improved. Utility Model Content

[0004] Based on the above description, this utility model provides a recovery tower for ammonium bicarbonate production to solve the problem that when the filter section of the cleaning section of the existing recovery tower becomes clogged during operation, the production system must always be shut down and the filter section cleaned before restarting, which affects production efficiency.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A recovery tower for ammonium bicarbonate production includes a main tower, on which an air inlet, an air outlet, and a fixed plate are provided. The main tower is provided with a cleaning section, which includes a three-way pipe, a water spraying mechanism, and a circulating pump. One end of the three-way pipe is connected to the main tower, and the other end of the three-way pipe is connected to a control valve. The control valve is connected to the circulating pump through a pipe. The circulating pump is mounted on the fixed plate and is connected to the water spraying mechanism. The water spraying mechanism is located between the inner and outer sides of the main tower. One end of the three-way pipe is connected to a control valve. The control valve is connected to the pipe through a pipe. Both the pipe and the pipe are provided with filters. A flow meter is installed on the pipe.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, both pipe one and pipe two have openings, and both pipe one and pipe two have slots on their inner sides near the openings. The filter element includes a mounting frame, a filter screen, and a connecting plate. The mounting frame is fixed to the inner side of the connecting plate and is movably connected to the slot. The filter screen is connected to the inner side of the mounting frame. The two filter elements are connected to pipe one and pipe two respectively through a fixing component.

[0008] Furthermore, the fixing assembly includes two connecting frames, a connecting column, a spring, and a limiting member. The two connecting frames are respectively fixedly connected to pipe one and pipe two. The connecting column is fixedly connected to the outside of the connecting plate. The limiting member is disposed on the connecting column. The spring is sleeved on the outside of the connecting column. A collar located between the spring and the limiting member is sleeved on the outside of the connecting column. A support rod is provided on the outside of the collar.

[0009] Furthermore, the inner side of the connecting frame is provided with several protrusions, with space between the several protrusions, and the support rod extends between the several protrusions.

[0010] Furthermore, the top of the connecting column is provided with a threaded hole along the vertical direction, and the limiting member is a hexagonal bolt, which is connected to the connecting column through the threaded hole.

[0011] Furthermore, the top surface of the collar is provided with several gripping rods.

[0012] Furthermore, the protrusion has a triangular shape when viewed from the side.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0014] Through the coordinated design of the cleaning section, filter elements, and flow meter, if the flow meter detects filter blockage during operation, normal operation can be resumed directly by adjusting control valves one and two on the cleaning section. This eliminates the need to stop the ammonium bicarbonate production system, which is more conducive to the long-term normal operation of the production system and improves production efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a front view structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the connection structure between the pipe and the filter section of this utility model;

[0018] Figure 4 This is a schematic diagram of the pipe structure of this utility model;

[0019] Figure 5 This is a side view of the filter section of this utility model.

[0020] Figure 6 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Main tower; 11. Air inlet; 12. Air outlet; 13. Fixing plate; 2. Cleaning section; 21. T-pipe; 22. Water spray mechanism; 23. Circulating pump; 24. Control valve one; 25. Pipe one; 26. Control valve two; 27. Pipe two; 28. Opening; 29. ​​Empty slot; 3. Filter element; 31. Mounting frame; 32. Filter screen; 33. Connecting plate; 4. Fixing assembly; 41. Connecting frame; 411. Protrusion; 42. Connecting column; 421. Threaded hole; 43. Spring; 44. Limiting element; 45. Collar; 451. Grab rod; 46. Support rod; 5. Flow meter. Detailed Implementation

[0023] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0025] Example

[0026] Please refer to Figures 1-6This embodiment provides a recovery tower for ammonium bicarbonate production, including a main tower 1 filled with dilute ammonia water. The main tower 1 is equipped with an inlet 11, an outlet 12, and a fixed plate 13. A cleaning section 2 is provided on the main tower 1, including a three-way pipe 21, a water spraying mechanism 22, and a circulating pump 23. One end of the three-way pipe 21 is connected to the main tower 1, and the other end is bolted to a control valve 24. The control valve 24 is connected to the inlet of the circulating pump 23 via a pipe 25. The circulating pump 23 is bolted to the fixed plate 13. The circulating pump 23 is model YL-zyb4. The circulating pump 23 is connected to the water spray mechanism 22, which is connected between the inner and outer sides of the main tower 1. One end of the three-way pipe 21 is connected to the control valve 26. The outlet of the control valve 26 is connected to the pipe 25 via a pipe 27. Both pipe 25 and pipe 27 are equipped with filter elements 3. Both pipe 25 and pipe 27 have openings 28. Both pipe 25 and pipe 27 have slots 29 on their inner sides near the openings 28. The filter element 3 includes a mounting frame 31 and a filter... The filter screen 32 and the connecting plate 33 are fixedly connected to the inner side of the connecting plate 33. The mounting frame 31 is movably connected to the slot 29. The inner diameter of the mounting frame 31 corresponds to the inner diameter of pipe 1 25 and pipe 2 27. The filter screen 32 is connected to the inner side of the mounting frame 31. The two filter elements 3 are connected to pipe 1 25 and pipe 2 27 respectively through a fixing component 4. The fixing component 4 includes two connecting brackets 41, a connecting column 42, a spring 43, and a limiting member 44. The two connecting brackets 41 are fixedly connected to pipe 1 25 and pipe 2 27 respectively. Close to the opening 28, the connecting column 42 is fixedly connected to the top surface of the connecting plate 33. The limiting member 44 is set on the connecting column 42. The spring 43 is sleeved on the outside of the connecting column 42. The spring 43 is compressed downward. The outer side of the connecting column 42 is sleeved with a collar 45 located between the spring 43 and the limiting member 44. The outer side of the collar 45 is provided with a support rod 46 extending to the inside of the connecting frame 41 in a transverse direction. A flow meter 5 is installed on the first pipe 25. The flow meter 5 is located between the second pipe 27 and the circulating pump 23. The flow meter 5 is a smart electromagnetic flow meter with a model number of DN80.

[0027] In this embodiment, when using pipe 25, if the flow meter 5 displays a value lower than the standard value, the operator can rotate control valve 26 to open it, and then immediately rotate control valve 24 to close it. This allows the dilute ammonia water in the main tower 1 to be thoroughly cleaned by the CO2 through the three-way pipe 21, control valve 26, pipe 27, and flow meter 5 under the action of the circulating pump 23. Then, pressure can be applied to the collar 45 to rotate it, using the collar 45 to drive the support rod 46 away from the connecting frame 41, and the spring 43 to rebound upwards. At this time, the filter element 3 located in pipe 25 is in a loose state, and the filter element 3 can be directly removed and processed. If the filter element 3 is severely blocked when using pipe 27, the same operation described above can be used to adjust control valve 24 and control valve 26, and the filter element 3 on pipe 27 can be removed and processed.

[0028] As an optional implementation, the inner side of the connecting frame 41 is provided with a plurality of protrusions 411, and there is space between the plurality of protrusions 411 that are close to each other, and the support rod 46 extends between the plurality of protrusions 411.

[0029] In this embodiment, when the collar 45 is rotated and its support rod 46 is brought close to the connecting frame 41, the collar 45 can be pressed down first, and the spring 43 is compressed and contracted. Then, the downward pressure on the collar 45 is maintained and the rotation operation is performed until its support rod 46 is rotated and moved to the inside of the connecting frame 41. Then the collar 45 is released, the spring 43 rebounds, and its support rod 46 is engaged between multiple protrusions 411, thereby achieving the restriction effect on the collar 45, preventing easy rotation and displacement, and ensuring the stable connection between the filter element 3 and the first pipe 25 and the second pipe 27.

[0030] As an optional implementation, the top of the connecting post 42 is provided with a threaded hole 421 along the vertical direction, and the limiting member 44 is a hexagonal bolt, which is connected to the connecting post 42 through the threaded hole 421.

[0031] In this embodiment, by setting the limiting member 44 as a hexagonal bolt and connecting it to the connecting post 42, the limiting member 44 and the connecting post 42 can be independently disassembled and assembled, which facilitates the initial assembly and subsequent maintenance.

[0032] As an alternative implementation, the top surface of the collar 45 is provided with a plurality of gripping rods 451.

[0033] In this embodiment, by gripping and pressing the gripping rod 451, it is convenient for the operator to rotate the collar 45.

[0034] As an alternative implementation, the protrusion 411 has a triangular shape in side view.

[0035] In this embodiment, the shape design of the protrusion 411 allows the opposing surfaces of two protrusions 411 that are close to each other to unfold outward, which makes it easier for the operator to move the support rod 46 between the two protrusions 411, making the operation more convenient.

[0036] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A recovery tower for ammonium bicarbonate production, comprising a main tower (1), wherein the main tower (1) is provided with an inlet (11), an outlet (12), and a fixing plate (13), characterized in that: The main tower (1) is equipped with a cleaning section (2); The cleaning section (2) includes a three-way pipe (21), a water spraying mechanism (22), and a circulating pump (23). One end of the three-way pipe (21) is connected to the main tower (1), and the other end of the three-way pipe (21) is connected to a control valve (24). The control valve (24) is connected to the circulating pump (23) through a pipe (25). The circulating pump (23) is installed on a fixed plate (13). The circulating pump (23) is connected to the water spraying mechanism (22). The water spraying mechanism (22) is located between the inner and outer sides of the main tower (1). One end of the three-way pipe (21) is connected to a control valve (26). The control valve (26) is connected to the pipe (25) through a pipe (27). Both the pipe (25) and the pipe (27) are equipped with filters (3). A flow meter (5) is installed on the pipe (25).

2. The recovery tower for ammonium bicarbonate production according to claim 1, characterized in that: Both pipe 1 (25) and pipe 2 (27) have openings (28). Both pipe 1 (25) and pipe 2 (27) have slots (29) on their inner sides near the openings (28). The filter element (3) includes a mounting frame (31), a filter screen (32) and a connecting plate (33). The mounting frame (31) is fixed to the inner side of the connecting plate (33). The mounting frame (31) is movably connected to the slot (29). The filter screen (32) is connected to the inner side of the mounting frame (31). The two filter elements (3) are connected to pipe 1 (25) and pipe 2 (27) respectively through a fixing component (4).

3. The recovery tower for ammonium bicarbonate production according to claim 2, characterized in that: The fixing component (4) includes two connecting brackets (41), a connecting column (42), a spring (43), and a limiting member (44). The two connecting brackets (41) are fixedly connected to pipe one (25) and pipe two (27), respectively. The connecting column (42) is fixedly connected to the outside of the connecting plate (33). The limiting member (44) is disposed on the connecting column (42). The spring (43) is sleeved on the outside of the connecting column (42). A collar (45) located between the spring (43) and the limiting member (44) is sleeved on the outside of the connecting column (42). A support rod (46) is provided on the outside of the collar (45).

4. A recovery tower for ammonium bicarbonate production according to claim 3, characterized in that: The inner side of the connecting frame (41) is provided with a plurality of protrusions (411), and there is space between the plurality of protrusions (411). The support rod (46) extends between the plurality of protrusions (411).

5. A recovery tower for ammonium bicarbonate production according to claim 3, characterized in that: The top of the connecting column (42) is provided with a threaded hole (421) along the vertical direction. The limiting member (44) is a hexagonal bolt. The limiting member (44) is connected to the connecting column (42) through the threaded hole (421).

6. A recovery tower for ammonium bicarbonate production according to claim 3, characterized in that: The top surface of the collar (45) is provided with several gripping rods (451).

7. A recovery tower for ammonium bicarbonate production according to claim 4, characterized in that: The protrusion (411) has a triangular shape when viewed from the side.

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