Hydrogen recovery equipment for carbon nanotube production

Abstract

The utility model belongs to the technical field of hydrogen recovery equipment, and particularly relates to hydrogen recovery equipment for carbon nano tube production, which comprises a separation tank, a hydrogen recovery device and a hydrogen recovery device, wherein the upper tank is movably connected with the lower tank; according to the hydrogen recovery equipment for carbon nanotube production, the separation tank is composed of the upper tank and the lower tank, the upper tank and the lower tank are movably connected, and after the upper tank and the lower tank are separated, due to the fact that the separation membrane is arranged at the bottom in the upper tank, the effect of conveniently and rapidly disassembling the separation membrane is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydrogen recovery equipment, specifically relating to a hydrogen recovery device for carbon nanotube production. Background Technology

[0002] In the large-scale production of carbon nanotubes, chemical vapor deposition is the mainstream process. Its reaction tail gas usually contains 20-50% unreacted hydrogen, 10-30% methane, 5-15% carbon monoxide, and trace amounts of carbon dioxide and nanoscale carbon particles.

[0003] Current hydrogen recovery equipment for carbon nanotube production typically uses membrane separation to filter the reacted gas mixture and separate the hydrogen. However, most recovery equipment has poorly designed tank structures. When the filter membrane needs replacement, the tank structure limits access, requiring workers to spend considerable time and effort disassembling numerous components to reach the membrane. This not only increases maintenance costs but also leads to excessive downtime, impacting the normal production schedule of carbon nanotubes.

[0004] Therefore, in order to solve the above problems, it is necessary to design a hydrogen recovery device for carbon nanotube production. Utility Model Content

[0005] The purpose of this invention is to provide a hydrogen recovery device for carbon nanotube production, in order to solve the technical problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a hydrogen recovery device for carbon nanotube production, comprising:

[0007] The separation tank comprises an upper tank and a lower tank; wherein

[0008] The upper and lower tanks are movably connected;

[0009] At least one separation membrane is disposed inside the upper tank and located at the bottom of the upper tank.

[0010] Furthermore, the bottom of the upper can is provided with a first external thread;

[0011] The top of the lower tank is provided with a first internal thread; wherein

[0012] The first external thread and the first internal thread are threaded together; and

[0013] A sealing ring is suitable for placement between the first external thread portion and the first internal thread portion.

[0014] Furthermore, the upper tank is equipped with an air inlet pipe; wherein

[0015] The upper part of the air inlet pipe penetrates the top of the upper tank;

[0016] The upper part of the air intake pipe is provided with a second external thread;

[0017] The lower part of the air intake pipe is located inside the lower tank; and

[0018] The separation membrane is fitted onto the air inlet pipe.

[0019] Furthermore, a hydrogen outlet pipe is connected to the upper side of the upper tank;

[0020] The inner side of the hydrogen outlet pipe is provided with a second internal thread.

[0021] Furthermore, an exhaust pipe is connected to the bottom of the lower tank;

[0022] A valve is threadedly connected to the other end of the exhaust pipe.

[0023] The beneficial effects of this utility model are:

[0024] (I) The present invention consists of an upper tank and a lower tank, which are movably connected. When the upper tank and the lower tank are separated, the separation membrane is set at the bottom of the upper tank, thereby achieving the effect of easy and quick disassembly of the separation membrane.

[0025] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a cross-sectional view of a preferred embodiment of the present invention;

[0029] Figure 2 This is an exploded view of a preferred embodiment of the present invention.

[0030] In the picture:

[0031] Separation tank 1, upper tank 11, first external threaded part 111, lower tank 12, first internal threaded part 121;

[0032] 2. Separation membrane, 3. Inlet pipe, 31. Second external thread, 4. Hydrogen outlet pipe, 41. Second internal thread, 5. Exhaust pipe, 6. Valve. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example 1

[0034] like Figure 1 , Figure 2 As shown, this embodiment provides a hydrogen recovery device for carbon nanotube production, including:

[0035] The separator 1 includes an upper tank 11 and a lower tank 12; wherein the upper tank 11 and the lower tank 12 are movably connected; at least one separation membrane 2 is disposed inside the upper tank 11 and located at the bottom of the upper tank 11; wherein the bottom of the upper tank 11 and the top of the lower tank 12 are movably connected by, but not limited to, a flange quick-release structure, and a double O-ring is provided between the flanges to ensure sealing; wherein the separation membrane 2 is, but not limited to, a palladium membrane, to have high selectivity and permeability for hydrogen.

[0036] In this embodiment, the separation tank 1 is composed of an upper tank 11 and a lower tank 12, and the upper tank 11 and the lower tank 12 are movably connected. When the upper tank 11 and the lower tank 12 are separated, the separation membrane 2 is set at the bottom of the upper tank 11, thereby achieving the effect of easy and quick disassembly of the separation membrane 2.

[0037] The bottom of the upper tank 11 is provided with a first external thread 111; the top of the lower tank 12 is provided with a first internal thread 121; wherein the first external thread 111 and the first internal thread 121 are threaded together; and a sealing ring is adapted to be placed between the first external thread 111 and the first internal thread 121; wherein by providing the first external thread 111 and the first internal thread 121, installation or disassembly can be completed by hand without the aid of external tools, thereby reducing maintenance difficulty; wherein by adapting to place a sealing ring between the first external thread 111 and the first internal thread 121, a sealing effect is achieved.

[0038] The upper tank 11 is provided with an air inlet pipe 3; the upper part of the air inlet pipe 3 penetrates the top of the upper tank 11; the upper part of the air inlet pipe 3 is provided with a second external thread 31; the lower part of the air inlet pipe 3 is located inside the lower tank 12; and the separation membrane 2 is sleeved on the air inlet pipe 3; wherein the second external thread 31 is provided to facilitate the connection of the air inlet pipe 3 with other connecting parts; wherein the lower part of the contact between the separation membrane 2 and the air inlet pipe 3 and the inner wall of the upper tank 11 is sealed with, but not limited to, sealant to prevent gas from leaking from the installation contact point, thereby preventing impurity in hydrogen recovery.

[0039] The upper side of the upper tank 11 is connected to a hydrogen outlet pipe 4; the inner side of the hydrogen outlet pipe 4 is provided with a second internal thread 41; by providing the hydrogen outlet pipe 4 and the second internal thread 41, the effect of facilitating connection with the hydrogen storage tank is achieved.

[0040] The bottom of the lower tank 12 is connected to an exhaust pipe 5; the other end of the exhaust pipe 5 is threadedly connected to a valve 6; the exhaust pipe 5 is used to discharge other gases; the valve 6 is, but is not limited to, a solenoid valve; the valve 6 is used to open or close the exhaust pipe 5.

[0041] In this embodiment, the principle of hydrogen recovery is as follows: the hydrogen-containing mixed gas enters the lower tank 12 through the inlet pipe 3. Due to the low density of hydrogen, it will spontaneously rise in the mixed gas. The hydrogen passes through the separation membrane 2 and enters the upper tank 11, and is transported to the storage tank through the hydrogen outlet pipe 4. The gas that does not pass through accumulates in the lower tank 12 and is discharged from the exhaust pipe 5 to the subsequent processing unit when the valve 6 is opened.

[0042] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0043] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A hydrogen recovery device for carbon nanotube production, characterized in that, include: The separation tank (1) includes an upper tank (11) and a lower tank (12). in The upper tank (11) and the lower tank (12) are movably connected; At least one separation membrane (2) is disposed inside the upper tank (11) and located at the bottom of the upper tank (11); The upper tank (11) is equipped with an air inlet pipe (3); wherein The upper part of the air inlet pipe (3) penetrates the top of the upper tank (11); The lower part of the air inlet pipe (3) is located inside the lower tank (12); and The separation membrane (2) is fitted onto the air inlet pipe (3).

2. The hydrogen recovery equipment for carbon nanotube production as described in claim 1, characterized in that, The bottom of the upper tank (11) and the top of the lower tank (12) are connected by a flange quick-release structure, and a double O-ring seal is provided between the flanges.

3. The hydrogen recovery equipment for carbon nanotube production as described in claim 1, characterized in that, The bottom of the upper can (11) is provided with a first external thread (111). The top of the lower tank (12) is provided with a first internal thread (121); wherein The first external thread portion (111) and the first internal thread portion (121) are threaded together; and A sealing ring is suitable for placement between the first external thread portion (111) and the first internal thread portion (121).

4. The hydrogen recovery equipment for carbon nanotube production as described in claim 3, characterized in that, The upper part of the air intake pipe (3) is provided with a second external thread (31).

5. The hydrogen recovery equipment for carbon nanotube production as described in claim 4, characterized in that, The upper side of the upper tank (11) is connected to a hydrogen outlet pipe (4). The inner side of the hydrogen outlet pipe (4) is provided with a second internal thread (41).

6. The hydrogen recovery equipment for carbon nanotube production as described in claim 5, characterized in that, The bottom of the lower tank (12) is connected to an exhaust pipe (5). The other end of the exhaust pipe (5) is threaded with a valve (6).

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