Hydrogen-containing tail gas purification device

Abstract

The utility model relates to the technical field of tail gas purification devices, in particular to a hydrogen-containing tail gas purification device which comprises a reaction vessel, a deoxidation tank and a collection tank, a gas guiding device is arranged in the reaction vessel, a first spraying assembly is arranged in the gas guiding device, and the reaction vessel is communicated with the deoxidation tank through a first exhaust pipe; deoxidizing agent layers on the two sides are mounted in the deoxidizing tank, and the deoxidizing tank is communicated with the collecting tank through a second exhaust pipe. The hydrogen-containing tail gas purification device can improve the purification purity of hydrogen-containing tail gas.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment devices, in particular to a hydrogen-containing tail gas purification device. Background Art

[0002] In chemical production, hydrogen is an important industrial raw material and industrial gas, which has a wide range of applications in chemical industry, electronics industry, food processing and metallurgy industry. A large amount of hydrogen-containing tail gas will be generated in the production using hydrogen as a raw material. If the hydrogen-containing tail gas is directly discharged into the atmosphere, it will cause serious harm to the environment. Therefore, it is necessary to purify the hydrogen-containing tail gas to reduce the impact on the air environment.

[0003] In the related art, a reaction vessel, a deoxidation tank and a collection tank are used to purify the hydrogen-containing tail gas. That is, after the hydrogen-containing tail gas enters the reaction vessel, a liquid adding device at the top of the reaction vessel sprays sodium hydroxide solution to react with the hydrogen-containing tail gas, and then the hydrogen-containing tail gas reacted with sodium hydroxide is transported to the deoxidation tank for deoxidation, and finally stored in the collection tank. However, when the hydrogen-containing tail gas enters the reaction vessel, it will diffuse and move, and the liquid adding device can only spray sodium hydroxide solution at a fixed angle. It is possible that some hydrogen-containing tail gas enters the deoxidation tank directly without reacting with the sodium hydroxide solution. It can be seen that the purity of the hydrogen-containing tail gas is relatively low when the related art purifies the hydrogen-containing tail gas. Summary of the Utility Model

[0004] In order to improve the purity of the hydrogen-containing tail gas, the utility model provides a hydrogen-containing tail gas purification device.

[0005] In a first aspect, the present application provides a hydrogen-containing tail gas purification device, adopting the following technical solution:

[0006] A hydrogen-containing tail gas purification device includes a reaction vessel, a deoxidation tank and a collection tank.

[0007] A gas guiding device is arranged inside the reaction vessel, a first spraying assembly is arranged inside the gas guiding device, the reaction vessel is communicated with the deoxidation tank through a first suction pipe, two-side deoxidant layers are installed inside the deoxidation tank, and the deoxidation tank is communicated with the collection tank through a second suction pipe.

[0008] Furthermore, the gas guiding device is inclined and arranged inside the reaction vessel.

[0009] Furthermore, the gas flow guiding device includes multiple groups of flow guiding plate assemblies. Each group of flow guiding plate assemblies includes a first gas flow guiding plate, a second gas flow guiding plate, and a liquid collection tank. The first gas flow guiding plate is located below the second gas flow guiding plate. One end of the first gas flow guiding plate is connected to the reaction vessel through a first fastener, and one end of the second gas flow guiding plate is connected to the reaction vessel through a second fastener. The first fastener is located on the opposite side of the second fastener. The liquid collection tank is located at the lower end of the first gas flow guiding plate with a slope.

[0010] Furthermore, the first spraying assembly includes a first nozzle, a second nozzle, and a third nozzle. The first nozzle is located above the first fastener, the second nozzle is located below the second fastener, and the third nozzle is arranged at the bottom of the second gas flow guiding plate.

[0011] Furthermore, it further includes a second spraying assembly, and the second spraying assembly is located in the middle of two adjacent flow guiding plate assemblies.

[0012] Furthermore, it further includes a liquid collection pipe arranged outside the reaction vessel. The liquid collection pipe includes a main pipe and several branch pipes. The main pipe is respectively communicated with the branch pipes, and the branch pipes are in parallel with each other. One end of the branch pipe is connected to the liquid collection tank.

[0013] Furthermore, an electric valve switch is arranged on each branch pipe, and the electric valve switch is arranged at the end where the branch pipe is connected to the liquid collection tank.

[0014] In summary, the present utility model includes the following beneficial technical effects:

[0015] 1. By setting the gas flow guiding device, the hydrogen-containing tail gas can flow in a specific order. The settings of the first spraying assembly and the second spraying assembly achieve the full contact between the hydrogen-containing tail gas and the spraying liquid when flowing in a specific order, further effectively improving the purification purity of the hydrogen-containing tail gas.

[0016] 2. During the spraying process, multiple nozzles spray, expanding the spraying area and improving the spraying effect at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a hydrogen-containing tail gas purification device provided by the present utility model.

[0018] Figure 2 It is a schematic structural diagram of a gas flow guiding device provided by the present utility model.

[0019] Figure 3 It is a schematic structural diagram of the setting of an electric valve switch provided by the present utility model.

[0020] The description of the reference numerals is as follows:

[0021] 1 - reaction vessel, 2 - gas diversion device, 201 - first gas diversion plate, 202 - second gas diversion plate, 203 - liquid collection tank, 3 - first spraying assembly, 301 - first nozzle, 302 - second nozzle, 303 - third nozzle, 4 - first suction pipe, 5 - deoxidation tank, 6 - second suction pipe, 7 - collection tank, 8 - liquid collection pipe, 801 - main collection pipe, 802 - collection branch pipe, 9 - second spraying assembly, 901 - fourth nozzle, 902 - fifth nozzle, 903 - sixth nozzle, 10 - electric valve switch. Specific embodiments

[0022] The following will further describe the present application in detail in conjunction with the appended Figure 1 to the appended Figure 3 drawings.

[0023] After reading this specification, those skilled in the art may make modifications to this embodiment without creative contributions as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

[0024] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of this application.

[0025] In addition, in the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "a plurality" means two or more.

[0026] The purpose of the present utility model is to provide a hydrogen-containing tail gas purification device, which enables the hydrogen-containing tail gas to be in full contact with the spraying liquid through the gas diversion device 2 and the spraying assembly 3, thereby effectively improving the purification purity of the hydrogen-containing tail gas. Embodiment 1:

[0027] As Figure 1 - Figure 2 shown, a hydrogen-containing tail gas purification device of the present utility model includes a reaction vessel 1, a gas diversion device 2, a first spraying assembly 3, a first suction pipe 4, a deoxidation tank 5, a second suction pipe 6, and a collection tank 7.

[0028] The gas diversion device 2 is arranged inside the reaction vessel 1. The gas diversion device 2 is inclined inside the reaction vessel 1 through a fastener. The first spraying assembly 3 is fixedly arranged inside the gas diversion device 2 through a fastener. The first suction pipe 4 is arranged at the top right of the reaction vessel 1 and is connected to the deoxidation tank 5 through the first suction pipe 4. The first suction pipe 4 is connected to the air inlet at the left bottom of the deoxidation tank 5. Two deoxidizer layers are arranged inside the deoxidation tank 5. By arranging two deoxidizer layers, the deoxidation effect can be effectively improved. The right top end of the deoxidation tank 5 is fixedly connected to the second suction pipe 6 and is connected to the collection tank 7 through the second suction pipe 6, so as to store the deoxidized hydrogen-containing tail gas into the collection tank 7, as Figure 1 shown.

[0029] The gas diversion device 2 includes multiple groups of diversion plate assemblies, and the multiple groups of diversion plate assemblies are evenly arranged along the height direction of the reaction vessel 1. Each group of diversion plate assemblies includes a first gas diversion plate 201, a second gas diversion plate 202, and a liquid collection tank 203. Both the first gas diversion plate 201 and the second gas diversion plate 202 are inclined. The first gas diversion plate 201 is located below the second gas diversion plate 202. The left end of the first gas diversion plate 201 is fixedly connected to the left inner wall of the reaction vessel 1 through a first fastener. The right end of the second diversion plate 202 is fixedly connected to the right inner wall of the reaction vessel 1 through a second fastener. There is a certain distance between the right end of the first gas diversion plate 201 and the left end of the second diversion plate 202 and the inner wall of the reaction vessel 1 for the gas to pass through this distance. The first fastener is located on the opposite side of the second fastener. The liquid collection tank 203 is located at the lower end of the inclination of the first gas diversion plate 201.

[0030] In each set of flow guide plate assemblies, a first spraying assembly 3 is provided. The first spraying assembly 3 includes a first nozzle 301, a second nozzle 302, and a third nozzle 303. The first nozzle 301 is located above the first fastener, and the second nozzle 302 is located below the second fastener. The first nozzle 301 and the second nozzle 302 are oppositely arranged on two side walls inside the reaction vessel 1 through pipelines. Among them, a first water supply pipeline (not shown in the drawing) is arranged on the left side of the reaction vessel 1, and a second water supply pipeline (not shown in the drawing) is arranged on the right side. The first water supply pipeline is connected to all the first nozzles 301 through fasteners, the second water supply pipeline is connected to all the second nozzles 302, and a third water supply pipeline (not shown in the drawing) is arranged inside the second gas flow guide plate 202. The third water supply pipeline is connected to the third nozzle 303 to enable the first spraying assembly 3 to spray.

[0031] The third nozzle 303 is fixed to the bottom of the second gas flow guide plate 202 by bolts, as Figure 2 shown. By setting the third nozzle 303 during the spraying process, the sprayed liquid and the hydrogen-containing tail gas can be made to contact more fully.

[0032] A second spraying assembly 9 is arranged between two adjacent flow guide plate assemblies (i.e., an upper flow guide plate assembly and a lower flow guide plate assembly). The second spraying assembly 9 includes a fourth nozzle 901, a fifth nozzle 902, and a sixth nozzle 903. The fourth nozzle 901 is located in the middle of two first nozzles 301, the fifth nozzle 902 is located in the middle of two second nozzles 302, and the sixth nozzle 903 is located in the middle of two third nozzles 303. The fourth nozzle 901 and the fifth nozzle 902 are respectively fixedly connected to the reaction vessel 1 through fasteners, and the sixth nozzle 903 is connected to the bottom of the first gas flow guide plate 201 in the upper layer of flow guide plate assemblies through fasteners. Similarly, the first water supply pipeline is connected to all the fourth nozzles 901 through fasteners, the second water supply pipeline is connected to all the fifth nozzles 902, and a fourth water supply pipeline (not shown in the drawing) is arranged inside the first gas flow guide plate 201. The fourth water supply pipeline is connected to the sixth nozzle 903 to enable the second spraying assembly 9 to spray.

[0033] Working principle: The hydrogen-containing tail gas enters from the air inlet of the reaction vessel 1 and moves along the gas channels formed by a plurality of first gas flow guide plates 201 and a plurality of second gas flow guide plates 202. During the movement along the gas channels, the first nozzle 301, the second nozzle 302, the third nozzle 303, the fourth nozzle 901, the fifth nozzle 902, and the sixth nozzle 903 spray the hydrogen-containing tail gas. When the hydrogen-containing tail gas moves to the air outlet of the reaction vessel 1, it enters the first suction pipe 4 and then enters the deoxidation tank 5 through the first suction pipe 4. After being deoxidized by two layers of deoxidizing agent layers in the deoxidation tank 5, it enters the second suction pipe 6 and then enters the collection tank 7 through the second suction pipe 6.

[0034] Advantages of the present utility model: By providing the gas diversion device 2, the hydrogen-containing tail gas can flow along the gas diversion channel formed by the first gas diversion plate 201 and the second gas diversion plate 202. The settings of the first spraying assembly 3 and the second spraying assembly 9 enable the hydrogen-containing tail gas to come into full contact with the spraying liquid when flowing in a specific order, further effectively improving the purification purity of the hydrogen-containing tail gas. Embodiment 2:

[0035] As Figure 2 shown, the present utility model further includes a liquid collection pipe 8 outside the reaction vessel 1. The liquid collection pipe 8 includes a collection main pipe 801 and a plurality of collection branch pipes 802. The collection main pipe 801 is communicated with the collection branch pipes 802. The collection branch pipes 802 are arranged in parallel with each other. One end of the collection branch pipe 802 is fixedly connected to the outside of the reaction vessel 1 by bolts, and the other end is connected to the collection main pipe 801.

[0036] An electric valve switch 10 is provided on each branch pipe 802. The electric valve switch 10 is located at the connection between the branch pipe 802 and the liquid collection tank 203, that is, outside the reaction vessel 1. The electric valve 10 can control the connection and disconnection between the branch pipe 802 and the liquid collection tank 203. The liquid collection tank 203 is provided with a sensor (not shown in the drawings) for detecting the liquid volume in the liquid collection tank 203. When the sensor detects that the liquid volume in the liquid collection tank 203 is greater than the preset liquid volume, the electric valve 10 is opened. When the sensor detects that there is no liquid in the liquid collection tank 203, the electric valve 10 is closed. As Figure 3 shown.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydrogen-containing tail gas purification device, comprising a reaction vessel, a deoxidation tank and a collection tank, characterized in that a gas diversion device is arranged inside the reaction vessel, a first spraying assembly is arranged inside the gas diversion device, the reaction vessel is connected to the deoxidation tank through a first suction pipe, two-side deoxidizer layers are installed inside the deoxidation tank, and the deoxidation tank is connected to the collection tank through a second suction pipe.

2. The hydrogen-containing tail gas purification device according to claim 1, characterized in that, The gas diversion device is inclined and arranged inside the reaction vessel.

3. The hydrogen-containing tail gas purification device according to claim 2, wherein, The gas diversion device comprises a plurality of groups of diversion plate assemblies, each group of diversion plate assemblies comprising a first gas diversion plate, a second gas diversion plate and a liquid collection tank. The first gas diversion plate is located below the second gas diversion plate. One end of the first gas diversion plate is connected to the reaction vessel through a first fastener, one end of the second gas diversion plate is connected to the reaction vessel through a second fastener, the first fastener is located on the opposite side of the second fastener, and the liquid collection tank is located at the lower inclined end of the first gas diversion plate.

4. The hydrogen-containing tail gas purification device according to claim 3, characterized in that, The first spraying assembly comprises a first nozzle, a second nozzle and a third nozzle. The first nozzle is located above the first fastener, the second nozzle is located below the second fastener, and the third nozzle is arranged at the bottom of the second gas diversion plate.

5. The hydrogen-containing tail gas purification device according to claim 1, wherein, It further comprises a second spraying assembly, which is located between two adjacent diversion plate assemblies.

6. The hydrogen-containing tail gas purification device according to claim 3, wherein It further comprises a liquid collection pipe arranged outside the reaction vessel. The liquid collection pipe comprises a main pipe and a plurality of branch pipes. The main pipe is respectively communicated with the branch pipes, the branch pipes are connected in parallel with each other, and one end of each branch pipe is connected to the liquid collection tank.

7. The hydrogen-containing tail gas purification device according to claim 6, wherein, An electric valve switch is arranged on each branch pipe, and the electric valve switch is arranged at the end of the branch pipe connected to the liquid collection tank.

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