Ammonia gas treatment device and ammonia gas recovery system

Abstract

The utility model provides an ammonia gas treatment device and an ammonia gas recovery system, relates to the technical field of ammonia gas treatment, and is used for solving the problems that an existing absorption tower is connected with a heat exchanger for heat exchange, the number of needed connecting pipelines is large, the cost is high, and the water utilization rate is low. The tower body is sequentially provided with a first water inlet, a gas inlet, a first connecting port, a second connecting port and a first water outlet which are communicated with the cavity from top to bottom; a cooling pipe for circulating cooling water is arranged at the lower end in the tower body; the first water outlet is connected with the first water inlet through a pipeline which is provided with a water diversion device. Compared with a heat exchanger, the cost can be reduced by using the cooling pipe, only two connecting pipelines are needed to be connected with the first connecting port and the second connecting port respectively, the number of the connecting pipelines is small, and the leakage risk is reduced; ammonia water at the bottom of the tower body is introduced into the tower body through the first water inlet by the water diversion device, so that water can be recycled, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of ammonia treatment, and in particular to an ammonia treatment device and an ammonia recovery system. Background Art

[0002] Ammonia can burn the skin, eyes, and mucous membranes of the respiratory organs. If people inhale too much, it will cause lung swelling and even death. Therefore, waste gas containing ammonia cannot be discharged directly into the atmosphere to avoid polluting the environment and causing harm to the human body.

[0003] The existing ammonia treatment device uses the property of ammonia being soluble in water to pass ammonia and water into an absorption tower, where the water in the absorption tower absorbs the ammonia to form ammonia water. Since the process of ammonia dissolving in water is an exothermic process, the absorption tower is connected to a heat exchanger for heat exchange.

[0004] However, the absorption tower exchanges heat by connecting to a heat exchanger, which requires more connecting pipes and is more expensive, and the current absorption tower has a low water utilization rate. Utility Model Content

[0005] In view of the above problems, the embodiments of the present application provide an ammonia treatment device and an ammonia recovery system, which can reduce connecting pipelines, reduce costs, and enable water to be recycled.

[0006] In order to achieve the above objectives, the present application provides the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides an ammonia treatment device, comprising: a tower body, the tower body having a cavity, the tower body being provided with a first water inlet, an air inlet, a first connection port, a second connection port and a first water outlet in communication with the cavity in sequence from top to bottom;

[0008] A cooling pipe for cooling water circulation is installed at the lower end of the tower body, and both ends of the cooling pipe are connected to the first connection port and the second connection port respectively;

[0009] The first water outlet is connected to the first water inlet via a pipeline, and a water diversion device is installed on the pipeline.

[0010] In some embodiments of the present application, at least a portion of the cooling pipe is spirally bent along the extension direction of the tower body.

[0011] In some embodiments of the present application, a wire mesh demister is installed at the inner top of the tower body.

[0012] In some embodiments of the present application, a spray piece is installed in the cavity, the inlet of the spray piece is connected to the first water inlet, and a plurality of spray holes are arranged on the bottom side of the spray piece facing the tower body. The plurality of spray holes are distributed in an array on the surface of the spray piece facing the bottom side of the tower body.

[0013] In some embodiments of the present application, a plurality of packing members are installed in the cavity, the plurality of packing members are arranged at intervals, the plurality of packing members are located below the wire mesh demister, and along the height direction of the tower body, the packing members are located between the spray member and the air inlet.

[0014] In some embodiments of the present application, the filler member includes a support plate and a filler, the filler is placed on the support plate, and a plurality of through holes arranged at intervals are provided on the support plate.

[0015] In some embodiments of the present application, the packing is ball ring packing or structured packing.

[0016] In some embodiments of the present application, a second water inlet is provided on the tower body, and along the height direction of the tower body, the second water inlet is located between the air inlet and the first connecting port.

[0017] In some embodiments of the present application, an ammonia water discharge pipeline is connected to the pipeline between the water diversion device and the first water inlet;

[0018] And / or, an exhaust hole is provided on the top of the tower body;

[0019] and / or, a water intake device is installed on the pipeline between the first water outlet and the water diversion device;

[0020] And / or, a liquid level measuring device is installed at the bottom of the tower body.

[0021] In a second aspect, an embodiment of the present application provides an ammonia recovery system, including an ammonia treatment device and an ammonia water collection device, wherein the outlet of the ammonia water discharge pipeline of the ammonia treatment device is connected to the inlet of the ammonia water collection device.

[0022] The present application provides an ammonia treatment device, including a tower body, the tower body having a cavity, the tower body being sequentially provided with a first water inlet, an air inlet, a first connection port, a second connection port and a first water outlet connected to the cavity from top to bottom; a cooling pipe for cooling water circulation is installed at the lower end of the interior of the tower body, and the two ends of the cooling pipe are respectively connected to the first connection port and the second connection port; the first water outlet is connected to the first water inlet by a pipeline, and a water diversion device is installed on the pipeline. By passing cooling water into the cooling pipe, the cooling water and the ammonia water at the bottom of the tower body are heat exchanged to take away the heat of the ammonia water. Compared with the use of a heat exchanger, the use of the cooling pipe can reduce costs, and only two connecting pipes are required to be connected to the first connection port and the second connection port respectively, and the number of connecting pipes is less, which reduces the risk of leakage; the ammonia water at the bottom of the tower body is introduced into the tower body through the first water inlet through the water diversion device, so that the circulating ammonia water absorbs ammonia gas again, so that the water can be recycled, which is energy-saving and environmentally friendly.

[0023] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical scheme, and the beneficial effects brought about by the technical features of these technical schemes, other technical problems that can be solved by the ammonia treatment device and ammonia recovery system provided by the embodiments of the present application, other technical features included in the technical scheme, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the structure of an ammonia treatment device provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the top structure of a wire mesh demister of an ammonia treatment device provided in an embodiment of the present application.

[0027] Reference numerals:

[0028] 100-tower body; 101-first water inlet; 102-air inlet; 103-first connection port; 104-second connection port; 105-first water outlet; 106-second water inlet; 107-air exhaust hole;

[0029] 200-cooling pipe;

[0030] 300- water diversion device;

[0031] 400-wire mesh demister;

[0032] 500-filling member; 501-support plate; 502-filling member;

[0033] 600-ammonia discharge pipeline;

[0034] 700-water intake device;

[0035] 800-Liquid level measuring device;

[0036] 900-Sprayer. DETAILED DESCRIPTION

[0037] In the related art, ammonia is soluble in water, and ammonia gas and water are passed into an absorption tower. The ammonia gas is absorbed by the water in the absorption tower to form ammonia water. Since the process of ammonia dissolving in water is an exothermic process, the absorption tower is connected to a heat exchanger for heat exchange. However, the absorption tower is connected to a heat exchanger for heat exchange, which requires more connecting pipes and is more expensive. In addition, the current absorption tower has a low water utilization rate.

[0038] In order to solve the above problems, the present application provides an ammonia treatment device, including a tower body, the tower body has a cavity, and the tower body is sequentially provided with a first water inlet, an air inlet, a first connection port, a second connection port and a first water outlet connected to the cavity from top to bottom; a cooling pipe for cooling water circulation is installed at the lower end of the inner part of the tower body, and the two ends of the cooling pipe are respectively connected to the first connection port and the second connection port; the first water outlet is connected to the first water inlet by a pipeline, and a water diversion device is installed on the pipeline. By passing cooling water into the cooling pipe, the cooling water and the ammonia water at the bottom of the tower body are heat exchanged to take away the heat of the ammonia water. Compared with the use of a heat exchanger, the use of the cooling pipe can reduce costs, and only two connecting pipes are required to be connected to the first connection port and the second connection port respectively, and the number of connecting pipes is less, which reduces the risk of leakage; the ammonia water at the bottom of the tower body is introduced into the tower body through the first water inlet through the water diversion device, so that the circulating ammonia water absorbs ammonia gas again, which can make the water recycled, energy-saving and environmentally friendly.

[0039] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0040] See also Figure 1 In a first aspect, an embodiment of the present application provides an ammonia treatment device, comprising: a tower body 100, the tower body 100 having a cavity, the tower body 100 being sequentially provided with a first water inlet 101, an air inlet 102, a first connecting port 103, a second connecting port 104 and a first water outlet 105 connected to the cavity from top to bottom.

[0041] The interior of the tower body 100 is a hollow structure, and gas or liquid can be introduced into the cavity of the tower body 100. The first water inlet 101, the air inlet 102, the first connection port 103, the second connection port 104 and the first water outlet 105 of the tower body 100 are all connected to the cavity of the tower body 100.

[0042] Ammonia-containing waste gas is introduced into the air inlet 102, and the first water outlet 105 is used for water to flow out of the bottom of the tower body 100. The water flowing out of the first water outlet 105 enters the tower body 100 through the first water inlet 101, and the water entering the tower body 100 through the first water inlet 101 absorbs ammonia in the ammonia-containing waste gas.

[0043] Cooling water flows into one of the first connection port 103 and the second connection port 104 , and the cooling water flows through the cooling area and then flows out from the other of the first connection port 103 and the second connection port 104 .

[0044] In some embodiments of the present application, a cooling pipe 200 for cooling water circulation is installed at the lower end of the tower body 100 , and both ends of the cooling pipe 200 are connected to the first connection port 103 and the second connection port 104 , respectively.

[0045] Cooling water is introduced into one of the first connection port 103 and the second connection port 104 , enters one end of the cooling pipe 200 , flows along the cooling pipe 200 to the other end of the cooling pipe 200 , and finally flows out from the other of the first connection port 103 and the second connection port 104 .

[0046] Cooling water can be introduced from the first connection port 103 or the second connection port 104. When cooling water is introduced from the first connection port 103, the cooling water enters the end of the cooling pipe 200 close to the top of the tower body 100, and the cooling water flows along the cooling pipe 200 to the end of the cooling pipe 200 away from the top of the tower body 100, and finally flows out from the second connection port 104. The cooling water can rely on its own gravity to flow from one end of the cooling pipe 200 to the other end of the cooling pipe 200, without consuming additional energy, which is more energy-saving.

[0047] When cooling water is introduced from the second connection port 104, the cooling water enters the end of the cooling pipe 200 away from the top of the tower body 100, flows along the cooling pipe 200 to the end of the cooling pipe 200 close to the top of the tower body 100, and finally flows out from the first connection port 103. The cooling water cannot rely on its own gravity to flow from one end of the cooling pipe 200 to the other end of the cooling pipe 200. External force is required to drive the cooling water to flow from the second connection port 104 to the first connection port 103, which requires additional energy.

[0048] By passing cooling water into the cooling pipe 200, heat exchange is performed between the cooling water and the ammonia water at the bottom of the tower body 100 to take away the heat of the ammonia water. Compared with using a heat exchanger, using the cooling pipe 200 can reduce costs, and only two connecting pipes are required to be connected to the first connecting port 103 and the second connecting port 104 respectively. There are fewer connecting pipes, and possible leakage points are reduced, thereby reducing the risk of leakage.

[0049] In some embodiments of the present application, the first water outlet 105 is connected to the first water inlet 101 via a pipeline, and a water diversion device 300 is installed on the pipeline.

[0050] The water diversion device 300 extracts the water at the bottom of the tower body 100 through the first water outlet 105, and sends the water flowing out through the first water outlet 105 into the tower body 100 through the first water inlet 101 for ammonia absorption. The water diversion device 300 can be a centrifugal pump, a reciprocating pump, etc., as long as it can send the water at the bottom of the tower body 100 into the tower body 100 through the first water inlet 101, so that the water at the bottom of the tower body 100 can be recycled.

[0051] The ammonia water at the bottom of the tower body 100 is fed into the tower body 100 through the first water inlet 101 by the water diversion device 300, so that the circulating ammonia water absorbs ammonia gas again, so that water can be recycled, which is energy-saving and environmentally friendly.

[0052] See also Figure 1 In some embodiments of the present application, at least a portion of the cooling pipe 200 is spirally bent along the extension direction of the tower body 100 .

[0053] The middle part of the cooling pipe 200 can be made into a U-shape or a spiral shape. When the middle part of the cooling pipe 200 is made into a U-shape, the U-shaped part of the cooling pipe 200 contacts the ammonia water at the bottom of the tower body 100 for heat exchange, the contact area is small, and the heat dissipation efficiency is low.

[0054] Therefore, the middle part of the cooling pipe 200 can be spirally bent, so that the middle part of the cooling pipe 200 can exchange more heat with the ammonia water at the bottom of the tower body 100, thereby improving the efficiency of heat exchange. The middle part of the cooling pipe 200 can also be arranged in a serpentine shape at the bottom of the tower body 100 to improve the heat dissipation efficiency of the ammonia water.

[0055] A gap is provided between the middle portion of the cooling pipe 200 and the inner wall of the tower body 100 , so that there is no dimensional interference between the middle portion of the cooling pipe 200 and the inner wall of the tower body 100 , thereby improving the installation reliability of the cooling pipe 200 .

[0056] See also Figure 1-Figure 2 In some embodiments of the present application, a wire mesh demister 400 is installed at the inner top of the tower body 100 .

[0057] The amount of water delivered into the tower body 100 through the first water inlet 101 is certain. When the ammonia-containing exhaust gas entering the tower body 100 through the air inlet 102 undergoes a large fluctuation, the water delivered into the tower body 100 through the first water inlet 101 is not enough to absorb a large amount of ammonia therein, so that the ammonia can easily drive water vapor to be discharged from the top outlet of the tower body 100, causing water to be sprayed from the top of the tower body 100.

[0058] Therefore, in order to reduce the occurrence of water spraying at the top of the tower body 100, a wire mesh demister 400 is installed at the top of the tower body 100 to block the water vapor carried by the ammonia gas. The wire mesh demister 400 includes multiple layers of wire mesh and a supporting device, and the multiple layers of wire mesh are installed inside the tower body 100 through the supporting device.

[0059] See also Figure 1 In some embodiments of the present application, a spray member 900 is installed in the cavity, the inlet of the spray member 900 is connected to the first water inlet 101, and a plurality of spray holes are arranged on the bottom side of the tower body of the spray member 900, and the plurality of spray holes are distributed in an array at intervals on the surface of the spray member 900 facing the bottom side of the tower body 100.

[0060] If the water fed into the tower body 100 through the first water inlet 101 flows directly downward and contacts the ammonia, the contact area between the water and the ammonia is very small, only a small amount of ammonia is absorbed by the water, and the utilization rate of the water is very low. Therefore, a spraying member 900 is installed in the cavity, and the inlet of the spraying member 900 is connected to the first water inlet 101. The water fed into the tower body 100 through the first water inlet 101 first enters the spraying member 900, and then sprays out through the spraying member 900 toward the multiple spray holes at the bottom of the tower body, which can increase the contact area between the water and the ammonia, improve the utilization rate of the water, and save energy and protect the environment.

[0061] The multiple spray holes of the spray member 900 are distributed in an array at intervals on the surface of the spray member 900 facing the bottom side of the tower body 100. The spray member 900 can be designed as a shower head so that the water sprayed by the spray member 900 is distributed relatively evenly along the diameter direction of the tower body 100, which is conducive to full contact between water and ammonia.

[0062] See also Figure 1 In some embodiments of the present application, a plurality of filler members 500 are installed in the cavity, and the plurality of filler members 500 are arranged at intervals.

[0063] The multiple spray holes of the spray part 900 spray water toward the bottom of the tower body 100, and the contact time between the sprayed water and the ammonia is short, which is not conducive to the absorption of the ammonia. Therefore, the packing member 500 is installed in the cavity, and the water sprayed by the spray part 900 first falls on the packing member 500, so that the water and the packing member 500 are fully in contact; when the ammonia rises in the tower body 100, it contacts the water attached to the packing member 500, and the water on the packing member 500 absorbs the ammonia and falls to the bottom of the tower body 100.

[0064] A plurality of packing members 500 are provided, and the packing members 500 are arranged at intervals along the height direction of the tower body 100. The ammonia gas first contacts the packing member 500 near the bottom of the tower body 100, and the ammonia gas that is not absorbed continues to rise and contacts the packing member 500 at a higher position. After passing through the multiple layers of packing members 500, the absorption rate of the ammonia gas is higher.

[0065] In some embodiments of the present application, along the height direction of the tower body 100, the filler member 500 is located between the spray member 900 and the air inlet 102, so that the multiple filler members 500 can receive the water sprayed by the spray member 900, and the ammonia gas entering the tower body 100 through the air inlet 102 can pass through the multiple filler members 500 in sequence and be absorbed by the water on the multiple filler members 500, thereby avoiding wasting the filler members 500 and water, and improving energy utilization.

[0066] In some embodiments of the present application, a plurality of packing members 500 are located below the wire mesh demister 400, so that the wire mesh demister 400 is located above the tower body 100. When the airflow of ammonia entering the tower body 100 through the air inlet 102 is relatively large, the ammonia first passes through the plurality of packing members 500. The ammonia that cannot be absorbed by water after passing through the plurality of packing members 500 drives the water vapor to rise and is finally blocked by the wire mesh demister 400, thereby reducing the occurrence of water spraying at the top of the tower body 100.

[0067] See also Figure 1 In some embodiments of the present application, the filler 500 includes a support plate 501 and a filler 502 , the filler 502 is placed on the support plate 501 , and a plurality of through holes arranged at intervals are provided on the support plate 501 .

[0068] The support plate 501 is fixed on the inner wall of the tower body 100 to support the filler 502, and the filler 502 is stacked on the support plate 501. The support plate 501 is provided with a plurality of through holes arranged at intervals, so that the ammonia gas can pass through the support plate 501 and contact the water on the filler 502, and the ammonia water formed by the ammonia gas being absorbed by the water flows into the bottom of the tower body 100 through the plurality of through holes provided on the support plate 501.

[0069] See also Figure 1 In some embodiments of the present application, the packing 502 is a ball ring packing or a structured packing.

[0070] Ball ring packing is made of punched metal sheets, with two rows of window holes with inward-extending tongues opened on the ring wall. Each row of windows has five tongues bent into the ring, pointing to the center of the ring, and almost overlapping at the center. The positions of the upper and lower layers of window holes are staggered. Generally, the total area of ​​the openings is about 35% of the entire ring area.

[0071] Structured packing is a type of packing that is arranged in a uniform geometric pattern and neatly stacked in the tower. It has the advantages of large specific surface area, small pressure drop, uniform fluid distribution, and high mass and heat transfer efficiency.

[0072] The packing 502 may be a ball ring packing or a structured packing. Both the ball ring packing and the structured packing can make the ammonia gas fully contact with the water on the packing 502, thereby improving the utilization rate of the water.

[0073] See also Figure 1 In some embodiments of the present application, a second water inlet 106 is provided on the tower body 100 , and along the height direction of the tower body 100 , the second water inlet 106 is located between the air inlet 102 and the first connecting port 103 .

[0074] Before the device is put into use, desalted water is first introduced into the interior of the tower body 100 through the second water inlet 106, and then the water diversion device 300 is opened to introduce water from the bottom of the tower body 100 into the first water inlet 101 through the water diversion device 300. After the water enters the tower body 100 through the first water inlet 101, ammonia-containing waste gas is introduced through the air inlet 102 to contact the water.

[0075] When the device is to be stopped, the introduction of ammonia-containing waste gas through the air inlet 102 must be stopped first. After the ammonia-containing waste gas stops entering the tower body 100 for a period of time, the water diversion device 300 is stopped so that the remaining ammonia in the tower body 100 can be absorbed by water, reducing air pollution.

[0076] See also Figure 1 In some embodiments of the present application, an ammonia discharge pipeline 600 is connected to the pipeline between the water diversion device 300 and the first water inlet 101 .

[0077] After a period of circulation, the ammonia content of the desalted water introduced into the tower body 100 through the second water inlet 106 has reached a predetermined value, and it needs to be discharged and injected with new desalted water. If it continues to be circulated, the energy that the circulating water can absorb ammonia is limited, so that the absorption rate of ammonia is reduced, and part of the ammonia will be discharged from the top of the tower body 100, polluting the atmosphere.

[0078] When the ammonia content in the water reaches a predetermined value, the ammonia water is discharged through the ammonia water discharge pipeline 600 between the water diversion device 300 and the first water inlet 101 , and new desalted water is introduced into the interior of the tower body 100 through the second water inlet 106 .

[0079] In some embodiments of the present application, an exhaust hole 107 is provided at the top of the tower body 100 .

[0080] The exhaust hole 107 is normally open and is located at the top of the tower body 100 . After the ammonia-containing waste gas passes through the filler 500 , most of the ammonia has been absorbed by water, and the remaining gas is eventually discharged into the atmosphere through the exhaust hole 107 .

[0081] In some embodiments of the present application, a water intake device 700 is installed on the pipeline between the first water outlet 105 and the water diversion device 300 .

[0082] After a period of circulation, the desalted water introduced into the tower body 100 through the second water inlet 106 has limited energy to absorb ammonia, which reduces the ammonia absorption rate. Part of the ammonia will be discharged from the top of the tower body 100 to pollute the atmosphere. Therefore, it is necessary to test the water at the bottom of the tower body 100 at regular intervals to see whether the ammonia content in the water reaches a predetermined value. Water with an ammonia content that reaches the predetermined value cannot be used anymore and needs to be discharged through the ammonia discharge pipeline 600.

[0083] Specifically, a water intake device 700 is installed on the pipeline between the first water outlet 105 and the water diversion device 300. Water inside the tower body 100 is taken out through the water intake device 700 to test whether the ammonia content in the water reaches a predetermined value. Generally, the pH value of the taken out water is tested to determine whether the ammonia content reaches a predetermined value.

[0084] The water intake device 700 may be a manual valve or a solenoid valve, both of which can realize the on-off of the fluid. By opening the manual valve or the solenoid valve, the water inside the tower body 100 is obtained, and then the ammonia content in the water is tested.

[0085] In some embodiments of the present application, a liquid level measuring device 800 is installed at the bottom of the tower body 100 .

[0086] Before the device is used, desalted water is first introduced into the interior of the tower body 100 through the second water inlet 106. The amount of desalted water introduced needs to be measured by the liquid level measuring device 800 so that the liquid level of the desalted water introduced is relatively appropriate, which can effectively absorb ammonia and is not higher than the position of the first connecting port 103.

[0087] The liquid level measuring device 800 may be a magnetic flap liquid level gauge, an ultrasonic liquid level gauge, a float liquid level gauge, a radar liquid level gauge or a capacitive liquid level sensor.

[0088] In a second aspect, an embodiment of the present application provides an ammonia recovery system, including an ammonia treatment device and an ammonia water collection device, wherein the outlet of the ammonia water discharge pipeline 600 of the ammonia treatment device is connected to the inlet of the ammonia water collection device.

[0089] The ammonia water obtained by the ammonia treatment device is passed into the ammonia water collection device for storage. After a certain amount is stored, it is supplied to cement plant users for use.

[0090] The ammonia water collection device can be a stainless steel tank, a fiberglass tank, a carbon steel tank or a polyethylene tank.

[0091] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An ammonia treatment device, characterized in that: include: A tower body, the tower body having a cavity, the tower body being provided with a first water inlet, an air inlet, a first connecting port, a second connecting port and a first water outlet in sequence from top to bottom, which are connected to the cavity; A cooling pipe for cooling water circulation is installed at the lower end of the tower body, and two ends of the cooling pipe are respectively connected to the first connection port and the second connection port; The first water outlet is connected to the first water inlet via a pipeline, and a water diversion device is installed on the pipeline.

2. The ammonia treatment device according to claim 1, characterized in that: At least part of the cooling pipe is bent in a spiral shape along the extension direction of the tower body.

3. The ammonia treatment device according to claim 1, characterized in that: A wire mesh demister is installed at the inner top of the tower body.

4. The ammonia treatment device according to claim 3, characterized in that: A spray piece is installed in the cavity, the inlet of the spray piece is connected to the first water inlet, and the spray piece is provided with a plurality of spray holes on the bottom side of the tower body. The plurality of spray holes are distributed in an array on the surface of the spray piece facing the bottom side of the tower body.

5. The ammonia treatment device according to claim 4, characterized in that: A plurality of packing members are installed in the cavity, and the plurality of packing members are arranged at intervals. The plurality of packing members are located below the wire mesh demister, and along the height direction of the tower body, the packing members are located between the spray member and the air inlet.

6. The ammonia treatment device according to claim 5, characterized in that: The filler member comprises a support plate and a filler, wherein the filler is placed on the support plate, and a plurality of through holes arranged at intervals are arranged on the support plate.

7. The ammonia treatment device according to claim 6, characterized in that: The packing is ball ring packing or structured packing.

8. The ammonia treatment device according to any one of claims 1 to 7, characterized in that: A second water inlet is arranged on the tower body, and along the height direction of the tower body, the second water inlet is located between the air inlet and the first connecting port.

9. The ammonia treatment device according to any one of claims 1 to 7, characterized in that: The pipeline between the water diversion device and the first water inlet is connected to an ammonia water discharge pipeline; And / or, an exhaust hole is provided on the top of the tower body; And / or, a water intake device is installed on the pipeline between the first water outlet and the water diversion device; And / or, a liquid level measuring device is installed at the bottom of the tower body.

10. An ammonia recovery system, characterized in that: It comprises the ammonia treatment device and the ammonia water collecting device according to any one of claims 1 to 9, wherein the outlet of the ammonia water discharge pipeline of the ammonia treatment device is connected to the inlet of the ammonia water collecting device.

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