Urea production tail gas anti-aggregation mechanism

Abstract

The utility model relates to the technical field of urea production, in particular to a urea production tail gas anti-gathering mechanism which comprises a mounting cover, the lower surface of the mounting cover is in threaded connection with a collecting cover, the upper surface of the mounting cover is in threaded connection with four mounting cylinders, and the upper surface of the mounting cover is fixedly connected with a mounting seat. The upper surface of the installation base is connected with a motor in an embedded mode, the upper surface of the motor is fixedly connected with a second gear, and the upper surface of the installation cover is fixedly connected with a support. The uniform plates rotating with the rotating shaft as the axis and the partition nets are used for scraping, so that the water-drop-shaped washing liquid is smeared on the partition nets, the washing liquid is uniformly distributed on the multiple partition nets on the basis that later maintenance is facilitated, the reaction area of the washing liquid and tail gas is increased, and the tail gas gathering prevention effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to urea production technical field, concretely is a kind of urea production tail gas anti-aggregation mechanism. BACKGROUND

[0002] Urea production tail gas anti-aggregation mechanism is used to carry out harmlessness treatment to tail gas, since the urea dust generated by mechanical friction is discharged from the top of prilling tower with flowing air in prilling tower, and 0.05wt% free ammonia is carried by molten urea, part of free ammonia volatilizes in the prilling process in prilling tower and is discharged into atmosphere from the top air outlet of prilling tower with rising air, the dust discharged into atmosphere drifts a certain distance with air and then falls, which can corrode ground objects, and the discharge of free ammonia into atmosphere can also pollute air, and the existing device has certain drawbacks, such as the urea production tail gas anti-aggregation mechanism recorded in announcement number CN220779687U, which relates to urea production technical field, comprising flange and total recovery pipe fixedly connected to the upper surface of flange, the upper end of total recovery pipe is fixedly connected with two branch pipes, the outer circular surface of two branch pipes is provided with electromagnetic valve;

[0003] The above device sprays the washing liquid to the screen through the spray head to increase the contact area of the washing liquid tail gas, but the screen is multi-layered, and the first layer of screen can be uniformly sprayed, as the amount of washing liquid increases, the washing liquid coagulates into water droplets under the influence of gravity and falls on the lower layer of screen, which leads to uneven distribution of washing liquid on the lower layer of screen, resulting in reduced actual processing efficiency of the screen. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of urea production tail gas anti-aggregation mechanism to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of urea production tail gas anti-aggregation mechanism, including installation cover, the lower surface of installation cover is threadedly connected with collection cover, the upper surface of installation cover is threadedly connected with four installation barrels, the upper surface of installation cover is fixedly connected with mounting seat, the upper surface of mounting seat is embeddedly connected with motor, the upper surface of motor is fixedly connected with second gear, the upper surface of installation cover is fixedly connected with support;

[0007] The inside of installation barrel is provided with uniform module, the uniform module includes cover, shaft, spray seat and uniform plate, cover is threadedly connected to the upper end of installation barrel, shaft is embeddedly rotationally connected to the upper surface of cover, the outer surface of shaft is fixedly connected with first gear near upper end position, the first gear and second gear are engagedly connected, spray seat is engagedly connected to the outer surface of shaft, uniform plate is nestedly connected to the outer surface of shaft.

[0008] Furthermore, an air inlet pipe is fixedly connected to the lower surface of the mounting cover, and an air outlet is provided on the outer surface of the air inlet pipe.

[0009] Furthermore, a drain pipe is fixedly connected to the outer surface of the collection hood near its lower end.

[0010] Furthermore, the installation cylinder contains two limiting semi-cylinders, and the limiting semi-cylinders are fixedly connected to several limiting rails, with a mesh mesh engaging inside the limiting rails.

[0011] Furthermore, the uniform module also includes a limiting groove, a connecting seat, and a nozzle. The limiting groove is opened on the outer surface of the rotating shaft, and a liquid inlet channel is opened inside the rotating shaft. The liquid inlet channel is connected to the spray seat. The connecting seat is threaded to the outer surface of the spray seat, and the nozzle is fixedly connected to the lower surface of the spray seat.

[0012] Furthermore, the upper end of the rotating shaft is rotatably connected to an inlet pipe, one end of the inlet pipe is rotatably connected to an internal threaded connector, and the internal thread of the internal threaded connector is connected to an external threaded connector.

[0013] Furthermore, a rain cover is fixedly connected to the upper surface of the bracket.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The rotating shaft, in conjunction with the uniform plate, applies force to the limiting half-cylinder and the partition, causing them to separate from the mounting cylinder. Once the two limiting half-cylinders are no longer secured by the mounting cylinder, the partition that is locked in the limiting rail can be easily removed. At this point, the uniform module also separates from the mounting cylinder, making it easier to replace the uniform module or the mounting cylinder later without needing to replace the entire unit, thus saving on the cost of parts for device maintenance.

[0016] 2. The spraying base, in conjunction with the nozzle, sprays the atomized washing liquid. For multiple sets of screens, the top screen can be evenly sprayed by the nozzle. As the amount of washing liquid increases, it condenses into water droplets due to gravity and drips onto the lower screens in sequence. During this process, the uniform plate rotating around the axis scrapes against the screen, causing the water droplets of washing liquid to be applied to the screen. This ensures that the washing liquid is evenly distributed on multiple screens while facilitating later maintenance, increasing the reaction area between the washing liquid and the exhaust gas, and improving the effect of preventing exhaust gas agglomeration. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the mounting cover of this utility model;

[0019] Figure 3 This is a schematic diagram of the liquid inlet pipe connection structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the uniform module structure of this utility model.

[0021] In the diagram: 1. Mounting cover; 101. Mounting base; 102. Air inlet pipe; 103. Air outlet; 2. Collection cover; 201. Drain pipe; 3. Mounting cylinder; 301. Limiting half cylinder; 302. Limiting rail; 303. Partition net; 4. Uniformity module; 401. Rotating shaft; 402. Limiting groove; 403. Spraying base; 404. Connecting base; 405. Nozzle; 406. Uniformity plate; 407. Gear No. 1; 408. Cover; 5. Motor; 501. Gear No. 2; 6. Liquid inlet pipe; 601. External threaded connector; 602. Internal threaded connector; 7. Bracket; 701. Rain cover. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 In this embodiment of the utility model, a urea production tail gas anti-aggregation mechanism includes a mounting cover 1, a collection cover 2 threadedly connected to the lower surface of the mounting cover 1, four mounting cylinders 3 threadedly connected to the upper surface of the mounting cover 1, a mounting base 101 fixedly connected to the upper surface of the mounting cover 1, a motor 5 embeddedly connected to the upper surface of the mounting base 101, a second gear 501 fixedly connected to the upper surface of the motor 5, and a bracket 7 fixedly connected to the upper surface of the mounting cover 1.

[0024] The mounting cylinder 3 is equipped with a uniform distribution module 4, which includes a cover 408, a rotating shaft 401, a spray seat 403, and a uniform distribution plate 406. The cover 408 is threaded to the upper end of the mounting cylinder 3. The rotating shaft 401 is embedded and rotatably connected to the upper surface of the cover 408. A first gear 407 is fixedly connected to the outer surface of the rotating shaft 401 near the upper end. The first gear 407 and the second gear 501 are meshed. The spray seat 403 is engaged with the outer surface of the rotating shaft 401. The uniform distribution plate 406 is nested and connected to the outer surface of the rotating shaft 401.

[0025] Specifically, the device is installed at the upper end of the granulation tower exhaust pipe with the air inlet pipe 102. The exhaust gas enters the device from the air inlet pipe 102 and then exits from the air outlet 103. As the exhaust gas rises, the flue gas enters the installation cylinder 3. The motor 5 is started, and multiple rotating shafts 401 rotate synchronously under the drive of the second gear 501. The liquid inlet pipe 6 is connected to the external pipeline and is used to transport washing liquid in the rotating shafts 401. The exhaust gas reacts with the washing liquid to complete the harmless treatment of the exhaust gas. The liquid outlet pipe 201 can be connected to the outside. The valve connection is used to discharge the reacted liquid in the collection hood 2. It allows the rotating shaft 401 to work with the uniform plate 406 to apply force to the limiting half cylinder 301 and the partition 303, causing them to separate from the mounting cylinder 3. When the two limiting half cylinders 301 are no longer fixed by the mounting cylinder 3, the partition 303 that is locked in the limiting rail 302 can be easily removed. At this time, the uniform module 4 also completes the separation from the mounting cylinder 3, which facilitates the replacement of the uniform module 4 or the mounting cylinder 3 in the later stage, saving the cost of parts for device maintenance.

[0026] Example 1

[0027] like Figures 1-4 As shown, an air inlet pipe 102 is fixedly connected to the lower surface of the mounting cover 1, and an air outlet 103 is opened on the outer surface of the air inlet pipe 102. A drain pipe 201 is fixedly connected to the outer surface of the collection cover 2 near the lower end.

[0028] In this embodiment, the device is installed at the upper end of the granulation tower exhaust pipe in conjunction with the air inlet pipe 102. The exhaust gas enters the device from the air inlet pipe 102 and then exits from the air outlet 103. As the exhaust gas rises, the flue gas enters the installation cylinder 3. The motor 5 is started, and under the drive of the second gear 501, multiple rotating shafts 401 rotate synchronously. The liquid inlet pipe 6 is connected to the external pipe and is used to transport washing liquid in the rotating shaft 401. The exhaust gas and washing liquid react to complete the harmless treatment of the exhaust gas. The liquid outlet pipe 201 can be connected to the external valve to discharge the reacted liquid in the collection hood 2.

[0029] like Figures 1-4 As shown, two limiting half-cylinders 301 are placed inside the mounting cylinder 3. Several limiting rails 302 are fixedly connected inside the limiting half-cylinders 301. A partition net 303 is engaged inside the limiting rails 302. An inlet pipe 6 is rotatably connected to the upper end of the rotating shaft 401. An internal threaded connector 602 is rotatably connected to one end of the inlet pipe 6. An external threaded connector 601 is connected to the internal thread of the internal threaded connector 602. A rain cover 701 is fixedly connected to the upper surface of the bracket 7.

[0030] In this embodiment, when it is necessary to replace the partition 303 or the uniform module 4, the external threaded connector 601 is connected to the external hose. The internal threaded connector 602 is rotated to separate the internal threaded connector 602 from the external threaded connector 601. Then, the mounting cylinder 3 is manually rotated to separate the mounting cylinder 3 from the mounting cover 1. At this time, the mounting cylinder 3 is taken out together with the uniform module 4. Then, the cover 408 is rotated so that the rotating shaft 401, together with the uniform plate 406, applies force to the limiting half cylinder 301 and the partition 303, causing them to separate from the mounting cylinder 3. When the two limiting half cylinders 301 are no longer fixed by the mounting cylinder 3, the partition 303 that is engaged in the limiting rail 302 can be easily taken out. At this time, the uniform module 4 is also separated from the mounting cylinder 3, which facilitates the replacement of the uniform module 4 or the mounting cylinder 3 in the future, saving the cost of parts for device maintenance.

[0031] Example 2

[0032] Based on Example 1, in order to overcome the problem that it is inconvenient to evenly distribute the washing liquid on the mesh 303 in Example 1.

[0033] like Figures 1-4 As shown, the uniform module 4 also includes a limiting groove 402, a connecting seat 404, and a nozzle 405. The limiting groove 402 is opened on the outer surface of the rotating shaft 401. The rotating shaft 401 has a liquid inlet channel inside, which is connected to the spray seat 403. The connecting seat 404 is threaded to the outer surface of the spray seat 403, and the nozzle 405 is fixedly connected to the lower surface of the spray seat 403.

[0034] In this embodiment, the washing liquid enters the rotating shaft 401 through the inlet pipe 6, and then enters the spray seat 403 from the rotating shaft 401. The spray seat 403 and the connecting seat 404 engage with the rotating shaft 401 through a threaded assembly. The outer surface of the connecting seat 404 and the corresponding position of the limiting groove 402 are integrally cast with protrusions for auxiliary fixation of the spray seat 403 and the rotating shaft 401. After the first gear 407 drives the rotating shaft 401 to rotate, the spray seat 403, in conjunction with the nozzle 405, sprays the atomized washing liquid. For multiple sets of mesh 30... 3. The top layer of the mesh 303 can be evenly sprayed by the nozzle 405. As the amount of washing liquid increases, the washing liquid condenses into water droplets under the influence of gravity and falls onto the lower mesh 303 in sequence. During this process, the uniform plate 406 rotating around the shaft 401 scrapes against the mesh 303, so that the water droplets of washing liquid are applied to the mesh 303. This ensures that the washing liquid is evenly distributed on multiple meshes 303 while facilitating later maintenance, increasing the reaction area between the washing liquid and the exhaust gas, and improving the effect of preventing exhaust gas agglomeration.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mechanism for preventing the agglomeration of tail gas in urea production, comprising a mounting cover (1), a collection cover (2) being threadedly connected to the lower surface of the mounting cover (1), four mounting cylinders (3) being threadedly connected to the upper surface of the mounting cover (1), a mounting base (101) being fixedly connected to the upper surface of the mounting base (101), a motor (5) being embedded in the upper surface of the mounting base (101), a second gear (501) being fixedly connected to the upper surface of the motor (5), and a bracket (7) being fixedly connected to the upper surface of the mounting cover (1). Its features are, The mounting cylinder (3) is provided with a uniform module (4) inside, the uniform module (4) comprising: The cover (408) is threaded to the upper end of the mounting cylinder (3); A rotating shaft (401) is embedded and rotatably connected to the upper surface of the cover (408). A first gear (407) is fixedly connected to the outer surface of the rotating shaft (401) near the upper end. The first gear (407) and the second gear (501) are meshed together. The spray nozzle (403) is engaged with the outer surface of the rotating shaft (401); A uniform plate (406) is nested and connected to the outer surface of the rotating shaft (401).

2. The anti-agglomeration mechanism for urea production tail gas according to claim 1, characterized in that, An air inlet pipe (102) is fixedly connected to the lower surface of the mounting cover (1), and an air outlet (103) is provided on the outer surface of the air inlet pipe (102).

3. The urea production tail gas anti-agglomeration mechanism according to claim 1, characterized in that, A drain pipe (201) is fixedly connected to the outer surface of the collection cover (2) near the lower end.

4. The anti-agglomeration mechanism for urea production tail gas according to claim 1, characterized in that, The mounting cylinder (3) contains two limiting half cylinders (301), and the limiting half cylinders (301) are fixedly connected to several limiting rails (302). The limiting rails (302) are engaged with a partition net (303).

5. The anti-agglomeration mechanism for urea production tail gas according to claim 1, characterized in that, The uniform module (4) further includes: A limiting groove (402) is provided on the outer surface of the rotating shaft (401), and an inlet channel is provided inside the rotating shaft (401), which is connected to the spray seat (403); The connecting seat (404) is threaded to the outer surface of the spray seat (403); The nozzle (405) is fixedly connected to the lower surface of the spray seat (403).

6. The urea production tail gas anti-agglomeration mechanism according to claim 1, characterized in that, The upper end of the rotating shaft (401) is rotatably connected to the liquid inlet pipe (6), and one end of the liquid inlet pipe (6) is rotatably connected to the internal threaded connector (602). The internal threaded connector (602) is connected to the external threaded connector (601) through its internal thread.

7. The urea production tail gas anti-agglomeration mechanism according to claim 1, characterized in that, A rain cover (701) is fixedly connected to the upper surface of the bracket (7).

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