Ammonia washing tower

Abstract

The utility model discloses an ammonia washing tower which comprises an ammonia washing tower body, the bottom and the top of the ammonia washing tower body are respectively provided with an air inlet pipe and an air outlet pipe, and the bottom and the top of the ammonia washing tower body are also respectively provided with a liquid inlet pipe and a liquid outlet pipe; the combined type gas-liquid contact structure is composed of a plurality of baffling devices and filling devices which are alternately arranged in the ammonia washing tower body from bottom to top, the baffling devices are used for increasing the gas-liquid contact area through collision and dispersion effects, and the filling devices are used for strengthening the mass transfer process through the surface area advantage of filler. The baffling device and the filling device are organically combined to form a composite gas-liquid contact structure, the baffling device increases the gas-liquid contact area through collision and dispersion effects, the filling device strengthens the mass transfer process by utilizing the superficial area advantage of filler, and the baffling device and the filling device are in synergistic interaction, so that the absorption efficiency of ammonia gas is remarkably improved, and the efficient recovery of the ammonia gas is realized.

Description

Technical fields:

[0001] This utility model relates to the field of ammonia washing tower technology, and specifically to an ammonia washing tower. Background technology:

[0002] In the production of synthetic ammonia, the exhaust gas, liquid ammonia tank emissions, and flash vapor contain a large amount of ammonia. The release of ammonia not only wastes resources but also leads to air pollution and the greenhouse effect.

[0003] The traditional ammonia scrubbing tower has an unreasonable internal structure design and limited gas-liquid contact area, resulting in insufficient ammonia absorption and low recovery efficiency, which makes it difficult to meet increasingly stringent environmental protection and resource recovery requirements. At the same time, after the gas enters the ammonia scrubbing tower, the distribution is uneven and there is a flow deviation phenomenon, which prevents the gas and liquid from making sufficient contact, reduces the treatment effect of the ammonia scrubbing tower, and affects the efficiency and quality of ammonia recovery. Utility Model Content:

[0004] Therefore, this utility model provides an ammonia washing tower to overcome the problems of unreasonable internal structural design and limited gas-liquid contact area in existing ammonia washing towers, which leads to insufficient ammonia absorption, low recovery efficiency, and difficulty in meeting increasingly stringent environmental protection and resource recovery requirements. At the same time, after the gas enters the ammonia washing tower, the distribution is uneven and there is a flow deviation phenomenon, which prevents the gas and liquid from fully contacting each other, reduces the treatment effect of the ammonia washing tower, and affects the ammonia recovery efficiency and quality.

[0005] This utility model is implemented by the following technical solution:

[0006] An ammonia washing tower, comprising:

[0007] The ammonia washing tower body is equipped with an air inlet pipe and an air outlet pipe at the bottom and top, respectively, and also with a liquid inlet pipe and a liquid outlet pipe at the bottom and top, respectively.

[0008] The composite gas-liquid contact structure consists of multiple baffles and packing devices arranged alternately from bottom to top within the ammonia washing tower body. The baffles are used to increase the gas-liquid contact area through collision and dispersion, and the packing devices are used to enhance the mass transfer process through the surface area advantage of the packing.

[0009] A gas distributor is installed at the upper end of the inlet pipe and fixed inside the ammonia washing tower. The gas distributor uses an arc-shaped flow guiding structure to guide the gas to diffuse evenly to the tower cross section.

[0010] The liquid distribution system includes an inlet pipe inserted into the body of the ammonia washing tower and multiple nozzles fixed on the inlet pipe. The nozzles are used to uniformly spray circulating ammonia water into the body of the ammonia washing tower.

[0011] An adjustable baffle length mechanism includes a sliding plate disposed in the baffle device and an electric push rod that drives the sliding plate to slide. The sliding plate can be adjusted by the electric push rod to extend its length out of the baffle device to change the gas-liquid contact time.

[0012] Preferably, the baffle device includes a plurality of baffles arranged in a zigzag pattern, wherein the surface of the baffles is wavy and has through holes.

[0013] Preferably, the filling device includes a filling layer and a liquid distributor disposed at the lower end of the filling layer. The liquid distributor is an orifice plate structure, and the filling layer is filled with filler with a large specific surface area and high porosity.

[0014] Preferably, the arc-shaped flow guiding structure of the gas distributor is a hemispherical orifice plate.

[0015] Preferably, valves are provided on the air inlet pipe, liquid inlet pipe, and liquid outlet pipe respectively.

[0016] Preferably, the electric push rod is fixed to the outer wall of the ammonia washing tower body by a bracket and connected to an external controller to achieve automated control.

[0017] The advantages of this invention are: the combination of the baffle device and the filling device forms a composite gas-liquid contact structure. The baffle device increases the gas-liquid contact area through collision and dispersion, while the filling device enhances the mass transfer process by utilizing the surface area advantage of the packing material. The two work synergistically to significantly improve the absorption efficiency of ammonia and achieve efficient recovery of ammonia. Attached image description:

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure described in this utility model;

[0020] Figure 2 This is a partial structural diagram of the present invention.

[0021] In the diagram: 1. Ammonia washing tower body; 2. Inlet pipe; 3. Gas distributor; 4. Outlet pipe; 5. Liquid inlet pipe; 6. Liquid outlet pipe; 7. Baffle plate; 8. Packing layer; 9. Liquid distributor; 10. Sliding plate; 11. Electric push rod. Detailed implementation method:

[0022] 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 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] like Figure 1 , Figure 2 As shown, an ammonia washing tower includes an ammonia washing tower body 1, and an air inlet pipe 2 and an air outlet pipe 4 are fixed at the bottom and top of the ammonia washing tower body 1, respectively. An inlet pipe 5 and an outlet pipe 6 are also fixed at the bottom and top of the ammonia washing tower body 1, respectively.

[0024] The ammonia washing tower body 1 has multiple baffles fixedly installed from bottom to top inside, and each baffle is equipped with a filling device at its upper end. The baffles and filling devices are organically combined to form a composite gas-liquid contact structure. This structure increases the gas-liquid contact area by utilizing the collision and dispersion effect of the baffles, and enhances the mass transfer process by leveraging the surface area advantage of the filling device, thus achieving synergistic efficiency.

[0025] A gas distributor 3 is installed at the upper end of the inlet pipe 2. The gas distributor 3 is fixed inside the ammonia washing tower body 1. The gas distributor 3 makes the gas rise evenly into the filling device. The gas distributor 3 adopts a hemispherical orifice plate, which can better guide the gas diffusion and generate a guiding force for the gas entering the ammonia washing tower body 1 to diffuse in all directions, so that the gas is distributed more quickly and evenly throughout the entire tower cross section and reduces the gas flow deviation phenomenon.

[0026] The liquid inlet pipe 5 is inserted into the ammonia washing tower body 1, and multiple nozzles are fixed on the liquid inlet pipe 5. The nozzles are set inside the ammonia washing tower body 1 so that circulating ammonia water can be sprayed evenly into the ammonia washing tower body 1. At the same time, valves are fixed on the air inlet pipe 2, the liquid inlet pipe 5 and the liquid outlet pipe 6 respectively.

[0027] The baffle device includes multiple baffle plates 7 fixed from top to bottom inside the ammonia washing tower body 1, and the multiple baffle plates 7 are arranged in a zigzag pattern. Through holes are fixedly opened on the baffle plates 7 to ensure uniform gas distribution and passage. At the same time, the circulating ammonia water forms a liquid film on the baffle plates, increasing the gas-liquid contact area. The surface of the baffle plates 7 is wavy, which can effectively increase the surface area of ​​gas-liquid contact and the degree of turbulence.

[0028] The packing device includes a packing layer 8 and a liquid distributor 9, which are respectively fixedly installed in the body 1 of the ammonia washing tower. The packing layer 8 is filled with packing material with a large specific surface area and high porosity. The liquid distributor 9 is installed at the lower end of the packing layer. The liquid distributor 9 is set with an orifice plate to prevent the liquid from flowing down the tower wall and causing flow deviation.

[0029] A sliding plate 10 is slidably disposed inside the baffle 7. The sliding plate 10 also has through holes. One end of the sliding plate 10 can slide out of the baffle 7, and the other end is fixedly connected to the output end of the electric push rod 11. The electric push rod 11 is fixed to the outer wall of the ammonia washing tower body 1 by a bracket. According to the concentration of ammonia, the electric push rod 11 is controlled to push the sliding plate 10 to slide out of the baffle 7, which can extend the baffle length, increase the contact time with the liquid, and improve the treatment effect. At the same time, the electric push rod 11 can be directly connected to an external controller to achieve automated control.

[0030] In actual work process:

[0031] Ammonia-containing gas enters the ammonia washing tower body 1 through the inlet pipe 2 and gas distributor 3. The hemispherical orifice plate structure of the gas distributor 3 generates a guiding force for the gas to diffuse in all directions, so that the gas is quickly and evenly distributed throughout the entire tower cross section.

[0032] During the gas's ascent, it first contacts the baffle device. The baffle plate 7, with its zigzag design and wavy surface, causes the gas to collide and disperse. The circulating ammonia water, forming a liquid film on the baffle plate 7, comes into full contact with the gas, increasing the gas-liquid contact area. Simultaneously, depending on the ammonia concentration, the electric push rod 11 can push the sliding plate 10 out of the baffle plate 7, extending the baffle length and further increasing the gas-liquid contact time.

[0033] After preliminary treatment by the baffle device, the gas continues to rise and enters the filling device. The filling layer 8 is filled with filler with a large specific surface area and high porosity. The circulating ammonia water sprayed in through the nozzle is evenly distributed on the surface of the filler. When the gas passes through the filling layer, it comes into full contact with the circulating ammonia water. The surface area advantage of the filler is used to enhance the mass transfer process and achieve efficient absorption of ammonia.

[0034] The circulating ammonia solution, after absorbing ammonia gas, is discharged through the liquid outlet pipe 6, while the treated gas is discharged through the gas outlet pipe 4. Throughout the process, the efficient treatment of the ammonia-containing mixed gas is achieved through the synergistic action of the baffle and filling devices.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An ammonia washing tower, characterized in that... ,include: The ammonia washing tower body (1) is provided with an air inlet pipe (2) and an air outlet pipe (4) at the bottom and top respectively, and is also provided with a liquid inlet pipe (5) and a liquid outlet pipe (6) at the bottom and top respectively. The composite gas-liquid contact structure is composed of multiple baffle devices and filling devices arranged alternately from bottom to top inside the ammonia washing tower body (1). The baffle devices are used to increase the gas-liquid contact area through collision and dispersion, and the filling devices are used to enhance the mass transfer process through the surface area advantage of the packing. A gas distributor (3) is installed at the upper end of the inlet pipe (2) and fixed inside the ammonia washing tower body (1). The gas distributor (3) adopts an arc-shaped flow guiding structure to guide the gas to diffuse evenly to the tower cross section. The liquid distribution system includes an inlet pipe (5) inserted into the ammonia washing tower body (1) and multiple nozzles fixed on the inlet pipe (5). The nozzles are used to uniformly spray circulating ammonia water into the ammonia washing tower body (1). The adjustable baffle length mechanism includes a sliding plate (10) disposed in the baffle device and an electric push rod (11) for driving the sliding plate (10) to slide. The sliding plate (10) can be adjusted by the electric push rod (11) to extend out of the baffle device to change the gas-liquid contact time.

2. The ammonia washing tower according to claim 1, characterized in that: The flow deflector includes multiple flow deflector plates (7) arranged in a zigzag pattern. The surface of the flow deflector plate (7) is wavy and has through holes.

3. The ammonia washing tower according to claim 1, characterized in that: The filling device includes a filling layer (8) and a liquid distributor (9) disposed at the lower end of the filling layer (8). The liquid distributor (9) is an orifice plate structure. The filling layer (8) is filled with filler with a large specific surface area and high porosity.

4. The ammonia washing tower according to claim 1, characterized in that: The arc-shaped flow guiding structure of the gas distributor (3) is a hemispherical orifice plate.

5. An ammonia washing tower according to claim 1, characterized in that: Valves are provided on the air inlet pipe (2), liquid inlet pipe (5) and liquid outlet pipe (6).

6. An ammonia washing tower according to claim 1, characterized in that: The electric push rod (11) is fixed to the outer wall of the ammonia washing tower body (1) by a bracket and connected to an external controller to achieve automated control.

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