Circulating ammonia gas recovery device for urotropine production

Abstract

The utility model relates to the technical field of urotropine production, in particular to a circulating ammonia gas recovery device for urotropine production, which comprises a spray tower, a first spray component and a first flow guide cover, a first recovery pool is fixed at the lower part in the spray tower, and a gas inlet component is arranged on one side of the first recovery pool; a first spraying assembly is mounted on the upper edge of the outer part of the first recycling pool; the device has the beneficial effects that the first spraying assembly and the second spraying assembly facilitate secondary spraying of ammonia-containing gas in the urotropine production process, the sprayed ammonia-containing water flow can be circularly sprayed and utilized, the sprayed gas can make contact with the inner wall of the first flow guide cover of the inverted-funnel-shaped structure in the rising process, and the ammonia-containing water flow can be recycled. And in the same way, the second flow guide cover can be used for recollecting the ammonia-containing water vapor in the gas subjected to secondary spraying, so that the condition that ammonia gas in the ammonia-containing water vapor is inconvenient to recycle is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hexamethylenetetramine production, in particular to a hexamethylenetetramine production circulating ammonia recovery device. Background Art

[0002] Hexamethylenetetramine is an antibacterial drug, and its common dosage forms include tablets and solutions. It is used to prevent and treat chronic or recurrent, simple uncomplicated lower urinary tract infections and asymptomatic bacteriuria. It can inhibit a variety of bacteria and has antibacterial and antibacterial effects. Hexamethylenetetramine is formed by the condensation of formaldehyde and ammonia in an alkaline solution. In the actual production process, in order to make the reaction proceed in the direction of generating hexamethylenetetramine and to avoid the generation of side reactions that affect consumption, the excess ammonia involved in the reaction is controlled.

[0003] The existing spray tower generally only performs a single spray. The humidified gas after the spray contains water vapor containing ammonia. It is usually not convenient to recover the ammonia in this water vapor, so there are limitations in its use.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a gas filling joint that is convenient for docking is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a urotropine production circulating ammonia recovery device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hexamethylenetetramine production circulating ammonia recovery device, comprising a spray tower, a first spray assembly and a first guide cover, wherein a first recovery pool is fixed at the lower part of the spray tower, and an air intake assembly is arranged on one side of the first recovery pool, a first spray assembly is installed on the upper side of the outer side of the first recovery pool, and the first spray assembly comprises a water pump, a pump water pipe, an outer ring pipe, a spray pipe, a nozzle and a heat dissipation fin, a pump water pipe is connected to the upper side of the water pump, and an outer ring pipe is fixed on the upper side of the pump water pipe, the outer ring pipe is located outside the spray tower, and heat dissipation fins are arranged on the outer surface of the outer ring pipe, the inner side of the outer ring pipe is connected to the spray pipe, and the spray pipes are equidistantly distributed inside the spray tower, and a nozzle is installed below the spray pipe, a second recovery pool is installed in the middle of the spray tower, and a first guide cover is fixed on the inner side of the second recovery pool, and a second spray assembly is installed on the outer side of the second recovery pool.

[0007] Preferably, the air intake assembly includes an air intake pipe, an air distribution pipe and exhaust holes, an air distribution pipe is fixed to one side of the air intake pipe, and the air distribution pipe is distributed in a ring shape below the interior of the first recovery tank, and exhaust holes are evenly opened on the inner side of the air distribution pipe.

[0008] Preferably, the lower side of the second recovery tank is in an open structure, and the first flow guide cover is in an inverted funnel structure.

[0009] Preferably, the second spray assembly has the same structure as the first spray assembly, the water pump of the first spray assembly is connected to the first recovery tank through a pipeline, and the water pump of the second spray assembly is connected to the second recovery tank through a pipeline.

[0010] Preferably, a second air guide cover is fixed above the interior of the spray tower, and an exhaust pipe is connected to the top of the second air guide cover.

[0011] Preferably, a recovery and storage assembly is provided on the rear side of the spray tower, and the recovery and storage assembly includes a first water pump, a second water pump, a liquid delivery pipe and an ammonia water storage tank, the rear side of the first recovery tank is connected to the first water pump through a pipeline, and the rear side of the second recovery tank is connected to the second water pump through a pipeline, and the rear sides of the first water pump and the second water pump are both connected to the ammonia water storage tank through the liquid delivery pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides a urotropine production circulating ammonia recovery device. The ammonia-containing gas in the urotropine production process can be uniformly discharged into the water body inside the first recovery pool, so that the water body recovers the ammonia in the gas. The ammonia-containing gas in the urotropine production process is conveniently sprayed once by the first spray component, and the ammonia-containing water flow after spraying will return to the inside of the first recovery pool, so that it can be cyclically sprayed and utilized. During the rising process of the gas after spraying, it can contact the inner wall of the first guide cover with an inverted funnel-shaped structure, so that the ammonia-containing water vapor in the gas can condense and flow back to the inside of the first recovery pool along the inclined inner wall of the first guide cover. The second spray component has the same structure as the first spray component, so that the second spray component can spray the gas for the second time. Similarly, the second guide cover can re-collect the ammonia-containing water vapor in the gas after the second spraying, thereby avoiding the situation that the ammonia in the ammonia-containing water vapor is not convenient to recover. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the internal half-section structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the top view of the structure of the first spray assembly of the utility model;

[0016] Figure 3 This is a schematic diagram of the top view of the structure of the first air deflector of the utility model;

[0017] Figure 4 It is a schematic diagram of the overall side structure of the utility model.

[0018] In the figure: 1. spray tower; 2. exhaust pipe; 3. first recovery tank; 4. air intake assembly; 401. air intake pipe; 402. air distribution pipe; 403. exhaust hole; 5. first spray assembly; 501. water pump; 502. pump water pipe; 503. outer ring pipe; 504. spray pipe; 505. nozzle; 506. cooling fins; 6. second recovery tank; 7. first air guide cover; 8. second spray assembly; 9. second air guide cover; 10. recovery storage assembly; 1001. first water pump; 1002. second water pump; 1003. liquid delivery pipe; 1004. ammonia storage tank. DETAILED DESCRIPTION

[0019] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] See also Figure 1-Figure 4 The utility model provides a technical solution: a hexamethylenetetramine production cycle ammonia recovery device, comprising a spray tower 1, a first spray assembly 5 and a first guide cover 7, a first recovery pool 3 is fixed at the lower part of the spray tower 1, and an air intake assembly 4 is arranged on one side of the first recovery pool 3, the air intake assembly 4 comprises an air intake pipe 401, an air distribution pipe 402 and an exhaust hole 403, an air distribution pipe 402 is fixed on one side of the air intake pipe 401, and the air distribution pipe 402 is annularly distributed at the lower part of the first recovery pool 3, and the exhaust holes 403 are evenly opened on the inner side of the air distribution pipe 402;

[0022] The ammonia-containing gas in the production process of hexamethylenetetramine can be delivered to the inside of the gas distribution pipe 402 through the air inlet pipe 401. The gas distribution pipe 402 is distributed in a ring shape at the bottom of the inside of the first recovery tank 3, so that the gas inside the gas distribution pipe 402 can be evenly discharged into the water body inside the first recovery tank 3 through the evenly distributed exhaust holes 403, so that the water body can recover the ammonia in the gas and also play a role in cooling.

[0023] Embodiment 2

[0024] On the basis of the first embodiment, a first spray assembly 5 is installed on the outer upper side of the first recovery pool 3, and the first spray assembly 5 includes a water pump 501, a pump water pipe 502, an outer ring pipe 503, a spray pipe 504, a nozzle 505 and a heat dissipation fin 506, the upper side of the water pump 501 is connected to the pump water pipe 502, and the upper side of the pump water pipe 502 is fixed with the outer ring pipe 503, the outer ring pipe 503 is located outside the spray tower 1, and the outer surface of the outer ring pipe 503 is provided with a heat dissipation fin 506, the inner side of the outer ring pipe 503 is connected to the spray pipe 504, and the spray pipes 504 are equidistantly distributed inside the spray tower 1, and a nozzle 505 is installed below the spray pipe 504;

[0025] The water in the first recovery pool 3 is conveniently delivered to the interior of the outer ring pipe 503 through the water pump 501 and the pump water pipe 502 of the first spray assembly 5. The heat dissipation fins 506 on the outer surface of the outer ring pipe 503 facilitate heat conduction and heat dissipation of the water inside the outer ring pipe 503. The water inside the outer ring pipe 503 can enter a plurality of spray pipes 504 distributed at equal distances, so that the ammonia-containing gas in the production process of hexamethylenetetramine can be sprayed and cooled once through the nozzle 505 on the lower side of the spray pipe 504, and the ammonia-containing water flow after spraying will return to the interior of the first recovery pool 3, so that it can be recycled and sprayed for utilization.

[0026] Embodiment 3

[0027] On the basis of the second embodiment, a second recovery pool 6 is installed in the middle of the spray tower 1, and a first air guide cover 7 is fixed on the inner side of the second recovery pool 6, the lower side of the second recovery pool 6 is an open structure, and the first air guide cover 7 is an inverted funnel structure, and a second spray assembly 8 is installed on the outer upper side of the second recovery pool 6. The second spray assembly 8 has the same structure as the first spray assembly 5, and the water pump 501 of the first spray assembly 5 is interconnected with the first recovery pool 3 through a pipeline, and the water pump 501 of the second spray assembly 8 is interconnected with the second recovery pool 6 through a pipeline, and a second air guide cover 9 is fixed on the upper part of the spray tower 1, and the top of the second air guide cover 9 is connected to the exhaust pipe 2;

[0028] During the rising process of the gas after spraying, it can come into contact with the inner wall of the first guide cover 7 with an inverted funnel-shaped structure, so that the ammonia-containing water vapor in the rising gas can condense and flow back to the interior of the first recovery pool 3 along the inclined inner wall of the first guide cover 7. The second spray component 8 has the same structure as the first spray component 5, so that the second spray component 8 can spray the gas for the second time. Similarly, the second guide cover 9 can collect the ammonia-containing water vapor in the gas after the second spraying, thereby avoiding the direct discharge of the ammonia-containing water vapor.

[0029] Embodiment 4

[0030] On the basis of the third embodiment, a recovery and storage assembly 10 is provided at the rear side of the spray tower 1, and the recovery and storage assembly 10 includes a first water pump 1001, a second water pump 1002, a liquid delivery pipe 1003 and an ammonia storage tank 1004, the rear side of the first recovery tank 3 is connected to the first water pump 1001 through a pipeline, and the rear side of the second recovery tank 6 is connected to the second water pump 1002 through a pipeline, and the rear sides of the first water pump 1001 and the second water pump 1002 are both connected to the ammonia storage tank 1004 through the liquid delivery pipe 1003;

[0031] The ammonia-containing water in the first recovery tank 3 and the ammonia-containing water in the second recovery tank 6 can be respectively delivered to the interior of the ammonia water storage tank 1004 through the first pumping pump 1001, the second pumping pump 1002 and the liquid delivery pipe 1003, so as to facilitate the subsequent purification and extraction of ammonia in the centralized collected ammonia-containing water, thereby realizing the recovery of ammonia in the production process of hexamethylenetetramine.

[0032] In actual use, the ammonia-containing gas in the production process of hexamine is sent into the interior of the gas distribution pipe 402 through the air inlet pipe 401. The gas distribution pipe 402 is distributed in a ring shape at the lower part of the first recovery pool 3, so that the gas in the gas distribution pipe 402 can be evenly discharged into the water body in the first recovery pool 3 through the evenly distributed exhaust holes 403, so that the water body can recover the ammonia in the gas and also play a role in cooling. Then, the water in the first recovery pool 3 is sent into the interior of the outer ring pipe 503 through the water pump 501 and the pump water pipe 502 of the first spray assembly 5. The heat dissipation fins 506 on the outer surface of the outer ring pipe 503 can conduct heat and dissipate heat to the water body inside it. Then, the water body inside the outer ring pipe 503 enters into the interior of several spray pipes 504 and sprays the ammonia-containing gas in the production process of hexamine through the nozzle 505 to cool it down. The ammonia-containing water flow after spraying will return to the interior of the first recovery pool 3, so that it can be recycled and sprayed for utilization.

[0033] During the rising process of the gas after spraying, it can contact the inner wall of the first guide cover 7 with an inverted funnel-shaped structure, so that the ammonia-containing water vapor in the rising gas can condense and flow back to the inside of the first recovery tank 3 along the inclined inner wall of the first guide cover 7. The second spray component 8 has the same structure as the first spray component 5, so that the second spray component 8 can spray the gas for the second time. Similarly, the second guide cover 9 can collect the ammonia-containing water vapor in the gas after the secondary spraying, thereby avoiding the direct discharge of the ammonia-containing water vapor, and finally discharge it through the exhaust pipe 2. In addition, the ammonia-containing water body in the first recovery tank 3 and the ammonia-containing water body in the second recovery tank 6 can be respectively sent to the inside of the ammonia storage tank 1004 through the first pumping pump 1001, the second pumping pump 1002 and the liquid delivery pipe 1003, so as to facilitate the subsequent purification and extraction of ammonia in the concentratedly collected ammonia-containing water body, thereby realizing the recovery of ammonia in the production process of urotropine.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hexamethylenetetramine production circulating ammonia recovery device, characterized in that: The hexamethylenetetramine production circulating ammonia recovery device comprises: a spray tower (1), a first spray assembly (5) and a first guide cover (7); a first recovery pool (3) is fixed at the lower part of the spray tower (1), and an air intake assembly (4) is arranged on one side of the first recovery pool (3); a first spray assembly (5) is installed on the upper side of the outer side of the first recovery pool (3), and the first spray assembly (5) comprises a water pump (501), a pump water pipe (502), an outer ring pipe (503), a spray pipe (504), a nozzle (505) and a heat sink fin (506); a pump water pipe (502) is connected to the upper side of the water pump (501), and the pump water pipe (504) is connected to the upper side of the water pump (501). An outer ring tube (503) is fixed on the upper side of the spray tower (1), the outer ring tube (503) is located outside the spray tower (1), and the outer surface of the outer ring tube (503) is provided with heat dissipation fins (506), the inner side of the outer ring tube (503) is connected to a spray pipe (504), and the spray pipes (504) are evenly distributed inside the spray tower (1), and a nozzle (505) is installed below the spray pipe (504), a second recovery pool (6) is installed in the middle of the spray tower (1), and a first guide cover (7) is fixed on the inner side of the second recovery pool (6), and a second spray assembly (8) is installed on the outer upper side of the second recovery pool (6).

2. The ammonia recovery device for the production cycle of hexamethylenetetramine according to claim 1, characterized in that: The air intake assembly (4) comprises an air intake pipe (401), an air distribution pipe (402) and an exhaust hole (403); an air distribution pipe (402) is fixed to one side of the air intake pipe (401), and the air distribution pipe (402) is distributed in a ring shape at the lower part of the first recovery tank (3); and the exhaust holes (403) are evenly arranged on the inner side of the air distribution pipe (402).

3. The ammonia recovery device for the production cycle of hexamethylenetetramine according to claim 1, characterized in that: The lower side of the second recovery pool (6) is in an open structure, while the first flow guide cover (7) is in an inverted funnel structure.

4. The ammonia recovery device for the production cycle of hexamethylenetetramine according to claim 1, characterized in that: The second spray assembly (8) has the same structure as the first spray assembly (5); the water pump (501) of the first spray assembly (5) is connected to the first recovery tank (3) through a pipeline, and the water pump of the second spray assembly (8) is connected to the second recovery tank (6) through a pipeline.

5. The ammonia recovery device for the production cycle of hexamethylenetetramine according to claim 1, characterized in that: A second air guide cover (9) is fixed above the interior of the spray tower (1), and an exhaust pipe (2) is connected to the top of the second air guide cover (9).

6. The ammonia recovery device for the production cycle of hexamethylenetetramine according to claim 1, characterized in that: A recovery and storage assembly (10) is arranged at the rear side of the spray tower (1), and the recovery and storage assembly (10) comprises a first water pump (1001), a second water pump (1002), a liquid delivery pipe (1003) and an ammonia water storage tank (1004); the rear side of the first recovery pool (3) is connected to the first water pump (1001) via a pipeline, and the rear side of the second recovery pool (6) is connected to the second water pump (1002) via a pipeline, and the rear sides of the first water pump (1001) and the second water pump (1002) are both connected to the ammonia water storage tank (1004) via the liquid delivery pipe (1003).

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