Novel ammonia-containing gas recovery tower

Abstract

The utility model belongs to the technical field of ammonia gas recovery, and particularly relates to a novel ammonia gas-containing recovery tower which comprises a recovery tower body, a water inlet pipe is fixedly connected to the outer wall of the middle section of the recovery tower body, a gas outlet pipe is fixedly connected to the top of the recovery tower body, and a water outlet pipe is fixedly connected to the bottom of the recovery tower body. An ammonia gas absorption assembly is arranged at the bottom section of the inner side of the recovery tower, a reaction tank is arranged at the reaction end of the ammonia gas absorption assembly, a ventilation assembly is arranged on the inner side of the reaction tank, the gas outlet end of the ventilation assembly is arranged on the inner side of the reaction tank, and a water pumping assembly is arranged on the inner side of the bottom section of the reaction tank; a spraying assembly is arranged at the water outlet end of the water pumping assembly; according to the novel ammonia-containing gas recovery tower provided by the utility model, gas is directly introduced into the reaction tank in which the absorption liquid is stored through the spiral pipe, so that ammonia gas in the gas is absorbed twice, the absorption efficiency is improved, the liquid consumption is reduced, resources are saved, the load of the spray tower is reduced, and the service life of equipment is prolonged.

Description

A novel ammonia recovery tower Technical Field

[0001] This utility model relates to the field of ammonia recovery technology, and in particular to a novel ammonia recovery tower. Background Technology

[0002] Novel ammonia recovery towers have important applications in waste gas treatment, especially in industries such as fertilizer, metallurgy, and papermaking. With increasingly stringent environmental standards, the requirements for ammonia recovery towers are also gradually increasing, and traditional recovery methods face challenges in efficiency and resource consumption. Therefore, developing more efficient, energy-saving, and environmentally friendly new recovery towers has become a key research focus. These new recovery towers, through innovative design, improve gas-liquid contact efficiency and liquid distribution, reduce operating costs and equipment wear, and significantly improve the overall performance and stability of the system. Through these technological improvements, ammonia recovery towers can more effectively reduce ammonia emissions in waste gas, improve the production environment, and provide a more reliable and sustainable solution for industrial waste gas treatment.

[0003] A search revealed an existing patent (publication number: CN217855382U) that discloses an ammonia recovery tower for synthetic ammonia venting, comprising a recovery tower body and an ammonia gas pipeline and a drain pipe fixedly installed at the bottom of the recovery tower body; it also includes a mixing component installed inside the recovery tower body, the mixing component comprising a motor, an exhaust hood, and a fixing plate, the exhaust hood penetrating the recovery tower body and fixedly installed on the surface of the recovery tower body; synthetic ammonia venting is injected into the recovery tower body through an air inlet pipe on one side of the recovery tower body, and the synthetic ammonia venting inside the recovery tower body is stirred and dispersed by a dispersing fan blade on a rotating shaft driven by a motor; water connected to the outside is sprayed into the recovery tower body through a water pipe connected to a spray head installed on a ring pipe, and the dispersing fan blade of the mixing component stirs and disperses the synthetic ammonia venting inside the recovery tower body, so that the water and ammonia are fully mixed.

[0004] However, in actual use, the above-mentioned method involves spraying an absorbent liquid into the gas to absorb ammonia. However, when directly spraying the absorbent liquid into the gas, factors such as the spraying method, gas flow velocity, and liquid contact area all affect the ammonia absorption efficiency. Furthermore, the uniformity of the mixing between the gas and the absorbent liquid directly impacts the absorption efficiency. During the liquid spraying process, if the airflow or liquid flow is uneven, some gas may not fully contact the absorbent liquid, resulting in incomplete absorption.

[0005] Therefore, this utility model provides a novel ammonia recovery tower. Summary of the Invention

[0006] The purpose of this invention is to solve the problem that in the prior art, when directly spraying absorbent liquid into the gas for single absorption, some gas may not be able to fully contact the absorbent liquid due to uneven airflow or liquid flow distribution, resulting in incomplete absorption. Therefore, a novel ammonia-containing gas recovery tower is proposed.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A novel ammonia recovery tower includes a recovery tower, with an inlet pipe fixedly connected to the outer wall of the middle section of the recovery tower, an outlet pipe fixedly connected to the top of the recovery tower, and an outlet pipe fixedly connected to the bottom of the recovery tower. An ammonia absorption assembly is installed on the bottom inner section of the recovery tower, and a reaction tank is installed at the reaction end of the ammonia absorption assembly. An aeration assembly is installed inside the reaction tank, with its outlet located inside the reaction tank. A water pumping assembly is also installed inside the bottom section of the reaction tank, with a spraying assembly installed at its outlet. A support frame is fixedly connected to the top inner wall of the recovery tower, and the support frame is connected to the rotating end of the spraying assembly.

[0009] As a preferred technical solution of this application, the ammonia absorption assembly includes an absorption pipe, which is fixedly connected to the inner wall of the recovery tower. The reaction tank is located inside the absorption pipe on the side close to the inner wall of the recovery tower. An outlet groove is opened inside the absorption pipe on the side away from the inner wall of the recovery tower. The top of the outlet groove is connected to the reaction tank, and the bottom opening of the outlet groove is connected to the internal space of the recovery tower. A flow divider is fixedly connected to the bottom section of the inner wall of the absorption pipe. An inlet is opened on the outer wall of the absorption pipe and is connected to a water inlet pipe.

[0010] As a preferred technical solution of this application, the aeration assembly includes a spiral tube located at the bottom of the inner side of the reaction tank, the spiral tube being fixedly connected to the absorption tube, the spiral tube being fixedly connected to the recovery tower, and a control valve being fixedly connected to one end of the outer side of the spiral tube.

[0011] As a preferred technical solution of this application, the pumping assembly includes a connecting pipe, one side of which is connected to the bottom of the reaction tank, and a delivery pump is fixedly connected to the middle section of the connecting pipe.

[0012] As a preferred technical solution of this application, the spraying assembly includes a transmission pipe, which is rotatably connected to a support frame. The top end of the transmission pipe is connected to the top end of a connecting pipe. A uniformly distributed diverter pipe is fixedly connected to the outer side of the bottom of the transmission pipe, and a uniformly distributed atomizing nozzle is fixedly connected to the outer side of the diverter pipe.

[0013] As a preferred technical solution of this application, a support rod is fixedly connected to the inner wall of the top section of the recovery tower, a worm gear is rotatably connected to the middle section of the support rod, the worm gear is meshed with a worm fixedly connected to the outer side of the middle section of the transmission pipe, and a damping layer is provided at the connection between the support rod and the worm gear.

[0014] Compared with the prior art, this utility model provides a novel ammonia recovery tower, which has the following beneficial effects:

[0015] 1. The novel ammonia recovery tower of this utility model directly introduces gas into a reaction tank containing absorbent liquid through a spiral tube, thereby performing the first absorption of ammonia in the gas. Afterwards, the gas enters the gas outlet trough through the reaction tank and is then transported into the interior of the recovery tower through the bottom of the gas outlet trough. At the same time, the gas is evenly transported to the inside of the recovery tower by a diverter plate. The absorbent liquid in the reaction tank is extracted and sprayed out by a spray assembly using a water pumping assembly, thereby performing a second absorption of ammonia in the gas. This improves absorption efficiency, reduces liquid consumption, saves resources, reduces the load on the spray tower, extends equipment life, and avoids incomplete absorption caused by only one absorption or by uneven gas or liquid distribution.

[0016] 2. The novel ammonia recovery tower of this utility model generates stress opposite to the spray direction when the absorbent liquid is atomized and sprayed out by the atomizing nozzle, thereby driving the distribution pipe to rotate as a whole, which can enhance the gas-liquid contact efficiency, evenly distribute the absorbent liquid, optimize the liquid flow, avoid dead zones, and improve the overall performance of the absorption tower. Attached Figure Description

[0017] Figure 1 is a three-dimensional structural schematic diagram of this utility model;

[0018] Figure 2 is a three-dimensional structural schematic diagram of this utility model;

[0019] Figure 3 is a cross-sectional structural diagram of the recovery tower in this utility model;

[0020] Figure 4 is a schematic cross-sectional view of the absorption tube in this utility model.

[0021] Figure 5 is a schematic cross-sectional view of the absorption tube in this utility model.

[0022] Figure 6 is a partial three-dimensional structural diagram of the transmission tube in this utility model.

[0023] In the picture:

[0024] 1. Recovery tower; 11. Inlet pipe; 12. Outlet pipe; 13. Gas outlet pipe; 2. Absorption pipe; 21. Reaction tank; 22. Gas outlet trough; 23. Spiral tube; 24. Control valve; 25. Liquid inlet; 26. Diverter plate; 3. Connecting pipe; 31. Transfer pump; 32. Support frame; 33. Transmission pipe; 34. Diverter pipe; 35. Atomizing nozzle; 4. Support rod; 41. Worm gear; 42. Worm. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Embodiments

[0026] Referring to Figures 1-6, a novel ammonia recovery tower includes a recovery tower 1. A water inlet pipe 11 is fixedly connected to the outer wall of the middle section of the recovery tower 1, and the water inlet pipe 11 is fixedly connected to the recovery tower 1. An outlet pipe 13 is fixedly connected to the top of the recovery tower 1, and the outlet pipe 13 is supported and fixedly connected to the recovery tower 1. A water outlet pipe 12 is fixedly connected to the bottom of the recovery tower 1, and the water outlet pipe 12 is supported and fixedly connected to the recovery tower 1. An ammonia absorption assembly is installed on the inner bottom section of the recovery tower 1, and the ammonia absorption assembly is supported and fixedly connected to the recovery tower 1. A reaction tank 21 is installed at the reaction end of the ammonia absorption assembly. An aeration assembly is installed inside the tank 21 to allow gas to be directly introduced into the reaction tank 21, so that the gas reacts directly with the absorbent liquid. The outlet of the aeration assembly is located inside the reaction tank 21. A water pumping assembly is also installed inside the bottom section of the reaction tank 21. A spraying assembly is installed at the outlet of the water pumping assembly. The absorbent liquid at the bottom of the reaction tank 21 is extracted by the water pumping assembly and transported into the spraying assembly. A support frame 32 is fixedly connected to the top section of the inner wall of the recovery tower 1. The support frame 32 is connected to the rotating end of the spraying assembly. The spraying assembly is supported by the support frame 32 through the recovery tower 1.

[0027] The ammonia absorption assembly includes an absorption pipe 2, which is fixedly connected to the inner wall of the recovery tower 1. The recovery tower 1 supports and fixes the absorption pipe 2. A reaction tank 21 is set inside the absorption pipe 2, close to the inner wall of the recovery tower 1. An outlet groove 22 is opened inside the absorption pipe 2, away from the inner wall of the recovery tower 1. The top of the outlet groove 22 is connected to the reaction tank 21, and the bottom opening of the outlet groove 22 is connected to the internal space of the recovery tower 1. The gas delivered from the reaction tank 21 will enter the outlet groove 22. A flow divider 26 is fixedly connected to the bottom section of the inner wall of the absorption pipe 2. The flow divider 26 evenly delivers the gas into the recovery tower 1. An inlet 25 is opened on the outer wall of the absorption pipe 2. The inlet 25 is connected to the water inlet pipe 11. The absorbent is delivered into the reaction tank 21 through the inlet 25 via the water inlet pipe 11.

[0028] The ventilation assembly includes a spiral tube 23, which is located at the bottom of the inner side of the reaction tank 21. The spiral tube 23 is fixedly connected to the absorption pipe 2 and the recovery tower 1. The reaction tank 21 and the external gas conveying equipment are connected through the spiral tube 23. The outer wall of the spiral tube 23 has uniform through holes, so that the gas can pass through and enter the absorption liquid evenly. A control valve 24 is fixedly connected to one end of the outer side of the spiral tube 23, and the flow of gas in the spiral tube 23 is controlled by the control valve 24.

[0029] The pumping assembly includes a connecting pipe 3, one side of which is connected to the bottom of the reaction tank 21. A transfer pump 31 is fixedly connected to the middle section of the connecting pipe 3, and the absorbent liquid at the bottom of the reaction tank 21 is pumped out by the transfer pump 31 through the connecting pipe 3.

[0030] The spraying assembly includes a transmission pipe 33, which is rotatably connected to a support frame 32. The support frame 32 supports and limits the transmission pipe 33. The top end of the transmission pipe 33 is connected to the top end of the connecting pipe 3. The delivery pump 31 uses the absorbent extracted by the connecting pipe 3 to transport it into the transmission pipe 33. A uniformly distributed diversion pipe 34 is fixedly connected to the outer side of the bottom of the transmission pipe 33. The transmission pipe 33 supports and fixes the diversion pipe 34. A uniformly distributed atomizing nozzle 35 is fixedly connected to the outer side of the diversion pipe 34. The absorbent in the transmission pipe 33 is diverted through the diversion pipe 34 and uniformly transported into the atomizing nozzle 35 for atomization and spraying.

[0031] A support rod 4 is fixedly connected to the inner wall of the top section of the recovery tower 1. The recovery tower 1 supports and fixes the support rod 4. A worm gear 41 is rotatably connected to the middle section of the support rod 4. The support rod 4 limits the movement of the worm gear 41. The worm gear 41 meshes with a worm 42 fixedly connected to the outer side of the middle section of the transmission pipe 33. The transmission pipe 33 fixes the worm 42. At the same time, during the process of spraying the absorbent liquid through the atomizing nozzle 35, the stress will drive the transmission pipe 33, the diversion pipe 34, and the atomizing nozzle 35 to rotate in the opposite direction of spraying. A damping layer is provided at the connection between the support rod 4 and the worm gear 41. By providing a damping layer between the support rod 4 and the worm gear 41, the excessive rotation speed of the transmission pipe 33, the diversion pipe 34, and the atomizing nozzle 35 can be effectively prevented, thus avoiding accelerated wear.

[0032] Specifically, in operation, this novel ammonia recovery tower works as follows: First, absorbent liquid is delivered into the reaction tank 21 through the inlet pipe 11 and the liquid inlet 25. Then, gas is introduced into the reaction tank 21 through the spiral pipe 23. The ammonia in the gas undergoes a first reaction with the absorbent liquid. Afterward, the gas enters the bottom of the recovery tower 1 through the outlet trough 22. After being blocked by the diversion plate 26, it enters the recovery tower 1 evenly. During the process, the absorbent liquid at the bottom of the reaction tank 21 is extracted by the transfer pump 31 through the connecting pipe 3 and delivered into the transmission pipe 33. Then, the absorbent liquid in the transmission pipe 33 is diverted through the diversion pipe 34 and evenly enters the atomizing nozzle 35 for atomization and spraying. During the spraying process, reverse stress is generated, which drives the transmission pipe 33, the diversion pipe 34, and the atomizing nozzle 35 to rotate in the opposite direction of spraying, thereby distributing the absorbent liquid more evenly inside the recovery tower 1 and undergoing a secondary reaction with the gas to absorb the ammonia in the gas a second time.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel ammonia-containing gas recovery tower, comprising a recovery tower (1), characterized in that, A water inlet pipe (11) is fixedly connected to the outer wall of the middle section of the recovery tower (1), an air outlet pipe (13) is fixedly connected to the top of the recovery tower (1), and a water outlet pipe (12) is fixedly connected to the bottom of the recovery tower (1). An ammonia absorption assembly is provided on the bottom inner side of the recovery tower (1). A reaction tank (21) is provided at the reaction end of the ammonia absorption assembly. An air ventilation assembly is provided inside the reaction tank (21). The air outlet of the air ventilation assembly is located inside the reaction tank (21). A water pumping assembly is also provided inside the bottom section of the reaction tank (21). A spraying assembly is provided at the water outlet of the water pumping assembly. A support frame (32) is fixedly connected to the top section of the inner wall of the recovery tower (1). The support frame (32) is connected to the rotating end of the spraying assembly.

2. The novel ammonia recovery tower according to claim 1, characterized in that, The ammonia absorption assembly includes an absorption pipe (2), which is fixedly connected to the inner wall of the recovery tower (1). The reaction tank (21) inside the absorption pipe (2) is located on the side close to the inner wall of the recovery tower (1). An outlet groove (22) is opened on the side of the absorption pipe (2) away from the inner wall of the recovery tower (1). The top of the outlet groove (22) is connected to the reaction tank (21), and the bottom opening of the outlet groove (22) is connected to the internal space of the recovery tower (1). A diversion plate (26) is fixedly connected to the bottom section of the inner wall of the absorption pipe (2). An inlet (25) is opened on the outer wall of the absorption pipe (2), and the inlet (25) is connected to the water inlet pipe (11).

3. The novel ammonia-containing gas recovery tower according to claim 2, characterized in that, The ventilation assembly includes a spiral tube (23), which is located at the bottom of the inner side of the reaction tank (21). The spiral tube (23) is fixedly connected to the absorption tube (2) and the recovery tower (1). A control valve (24) is fixedly connected to one end of the outer side of the spiral tube (23).

4. A novel ammonia-containing gas recovery tower according to claim 3, characterized in that, The pumping assembly includes a connecting pipe (3), one side of which is connected to the bottom of the reaction tank (21), and a delivery pump (31) is fixedly connected to the middle section of the connecting pipe (3).

5. A novel ammonia-containing gas recovery tower according to claim 4, characterized in that, The spraying assembly includes a transmission pipe (33), which is rotatably connected to a support frame (32). The top end of the transmission pipe (33) is connected to the top end of the connecting pipe (3). A uniformly distributed diverter pipe (34) is fixedly connected to the outer side of the bottom of the transmission pipe (33), and a uniformly distributed atomizing nozzle (35) is fixedly connected to the outer side of the diverter pipe (34).

6. A novel ammonia recovery tower according to claim 5, characterized in that, A support rod (4) is fixedly connected to the inner wall of the top section of the recovery tower (1). A worm wheel (41) is rotatably connected to the middle section of the support rod (4). The worm wheel (41) meshes with a worm (42) fixedly connected to the outer side of the middle section of the transmission pipe (33). A damping layer is provided at the connection between the support rod (4) and the worm wheel (41).

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