Device for preparing single-walled carbon nanotube with hierarchical porous structure

Abstract

The utility model belongs to the technical field of carbon nanotubes, in particular to a device for preparing a single-walled carbon nanotube with a hierarchical porous structure, which comprises a machine body, a natural gas tank and a discharge pipe, the natural gas tank is fixed on the surface of one side of the machine body through a support, and the discharge pipe is arranged on the surface of one side of the machine body far away from the natural gas tank. A discharging pipe is arranged in the machine body, a forming head is movably arranged at the end of the discharging pipe, a grading porous mold is arranged in an inner cavity of the forming head, the end of the grading porous mold abuts against the surface of the discharging pipe, a spiral heat conduction pipe is arranged in the inner cavity of the forming head, a cooling liquid box is installed on the upper surface of the machine body, and a circulating pump is installed above the cooling liquid box. The novel carbon nano material enters the graded porous mold to be shaped, the graded porous mold can be rapidly replaced, the carbon nano tube can be rapidly cooled through circulation of cooling liquid in the spiral heat conduction tube, natural gas in the gas collection hood can be pumped out through matching of the gas suction pump and the gas collection hood, and leakage of the natural gas can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon nanotubes, in particular to a single-wall carbon nanotube preparation device with a graded porous structure. Background Art

[0002] Carbon nanotubes, also known as buckytubes, are one-dimensional quantum materials with a special structure (radial dimensions are nanometers, axial dimensions are micrometers, and both ends of the tube are basically sealed). Carbon nanotubes are mainly composed of coaxial circular tubes with several to dozens of layers of carbon atoms arranged in a hexagonal shape.

[0003] Patent search revealed that publication number: CN112796896A discloses a carbon nanotube preparation device and method using an ignition dual-fuel engine, wherein natural gas is injected into the cylinder after being mixed with fresh air by intake duct injection, and gasoline mixed with catalyst oil-soluble iron oxide nanoparticles in advance is injected into the cylinder by direct injection, and the two fuels are ignited by spark ignition after entering the cylinder. After the reaction in the cylinder, the generated carbon nanotubes are discharged from the cylinder along with the exhaust gas, and the exhaust gas can be collected by a carbon nanotube collector to recover part of the nano iron particles generated by reduction and not participating in the catalytic reaction; during this working process, the ECU controls the engine throttle, injector, jet valve, spark plug and EGR valve, so that the temperature, equivalence ratio and reaction time in the engine cylinder meet the optimal conditions for the growth of carbon nanotubes, and finally realize the continuous mass production of carbon nanotubes with high purity.

[0004] Publication No.: CN112796896A, discloses a carbon nanotube preparation device and method using an ignition dual-fuel engine. When producing carbon nanotubes, the carbon nanotubes are produced in a single shape, and the carbon nanotubes are still at a relatively high temperature when discharged from the engine, which is not conducive to the rapid cooling and molding of the carbon nanotubes. In addition, a small amount of uncatalyzed natural gas will leak out from the discharge port during the working process, resulting in excessive natural gas content at the working place. In order to solve the above problems, this application proposes a single-walled carbon nanotube preparation device with a hierarchical porous structure. Utility Model Content

[0005] (I) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a single-walled carbon nanotube preparation device with a hierarchical porous structure to solve the problems raised in the background technology.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a single-walled carbon nanotube preparation device with a hierarchical porous structure, comprising a body, a natural gas tank and a discharge pipe, wherein the natural gas tank is fixed to a side surface of the body through a bracket, and the discharge pipe is arranged on a side surface of the body away from the natural gas tank;

[0009] A forming head is movably provided at the end of the discharge pipe, a graded multi-porous mold is provided in the inner cavity of the forming head, the end of the graded multi-porous mold abuts against the surface of the discharge pipe, a spiral heat-conducting pipe is provided in the inner cavity of the forming head, a coolant tank is installed on the upper surface of the machine body, a circulating pump is installed above the coolant tank, the discharge end of the circulating pump is connected to the liquid inlet end of the spiral heat-conducting pipe, the liquid outlet end of the spiral heat-conducting pipe is conductively connected to the top of the side wall of the coolant tank, and an end cover is threadedly connected to the surface of the end of the air collecting hood away from the forming head.

[0010] Preferably, a threaded connection seat is provided on a surface of the machine body on one side away from the natural gas tank, and the threaded connection seat is located outside the discharge pipe.

[0011] Preferably, a threaded connector is provided at one end of the forming head close to the discharge pipe, and the forming head is threadably connected to the threaded connection seat via the threaded connector.

[0012] Preferably, an end of the forming head away from the discharge pipe is fixedly connected to a gas collecting hood.

[0013] Preferably, a through hole is opened through the center of the surface of the end cover, and the through hole corresponds to the position of the graded porous mold.

[0014] Preferably, an air storage tank is installed on the top surface of the machine body, an air suction pump is installed on the top surface of the air storage tank, and the air suction end of the air suction pump is conductively connected to the top surface of the air collecting hood through a pipeline.

[0015] Preferably, the pipeline at the suction end of the suction pump and both ends of the spiral heat-conducting pipe are movably provided with connecting slip knots.

[0016] The above technical solution of the utility model has the following beneficial technical effects:

[0017] 1. In the utility model, the end of the graded porous mold in the inner cavity of the molding head abuts against the surface of the discharge pipe, and the carbon nanomaterial enters the graded porous mold for shaping. The carbon nanomaterial is shaped into a single-wall graded porous structure by the graded porous mold. When the carbon nanotubes are discharged, a certain temperature still remains on the surface. The coolant in the cooling water tank is extracted by a circulating pump and circulated in the spiral heat-conducting pipe. The residual temperature on the carbon nanotubes can be taken away by the coolant, so that the carbon nanotubes can be quickly cooled.

[0018] 2. In the utility model, a small amount of natural gas will still be discharged from the discharge pipe when the carbon nanotubes are discharged. The natural gas in the gas collecting hood can be extracted by matching the suction pump and the gas collecting hood and stored in the gas storage tank. After the gas storage tank is full of natural gas, the natural gas can be discharged through the exhaust pipe for unified recovery, which can reduce the leakage of natural gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a single-walled carbon nanotube preparation device with a hierarchical porous structure according to the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of a single-walled carbon nanotube preparation device with a hierarchical porous structure according to the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of a forming head of a single-walled carbon nanotube preparation device with a hierarchical porous structure according to the utility model;

[0022] Figure 4 This is a schematic diagram of the gas collecting hood structure of a single-walled carbon nanotube preparation device with a hierarchical porous structure according to the utility model;

[0023] Figure 5 This is a schematic diagram of the hierarchical porous mold structure of a single-walled carbon nanotube preparation device with a hierarchical porous structure of the utility model.

[0024] Reference numerals:

[0025] 1. Machine body; 2. Natural gas tank; 3. Discharge pipe; 4. Threaded connection seat; 5. Forming head; 6. Graded multi-hole mold; 7. Spiral heat pipe; 8. Coolant tank; 9. Circulation pump; 10. Gas hood; 11. Suction pump; 12. Gas storage tank; 13. End cover; 14. Connection knot. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0027] like Figure 1-5 As shown, the utility model proposes a single-walled carbon nanotube preparation device with a hierarchical porous structure, comprising a body 1, a natural gas tank 2 and a discharge pipe 3, wherein the natural gas tank 2 is fixed to a side surface of the body 1 by a bracket, and the discharge pipe 3 is arranged on a side surface of the body 1 away from the natural gas tank 2;

[0028] A forming head 5 is movably provided at the end of the discharge pipe 3, and a graded multi-porous mold 6 is provided in the inner cavity of the forming head 5. The end of the graded multi-porous mold 6 abuts against the surface of the discharge pipe 3, and a spiral heat-conducting pipe 7 is provided in the inner cavity of the forming head 5. A coolant tank 8 is installed on the upper surface of the body 1, and a circulating pump 9 is installed above the coolant tank 8. The discharge end of the circulating pump 9 is connected to the liquid inlet end of the spiral heat-conducting pipe 7, and the liquid outlet end of the spiral heat-conducting pipe 7 is conductively connected to the top of the side wall of the coolant tank 8.

[0029] It should be noted that when the body 1 synthesizes the carbon nanomaterial, natural gas needs to be injected into the body 1 through the natural gas tank 2, and the synthesized carbon nanomaterial is discharged from the discharge pipe 3. The end of the graded porous mold 6 in the inner cavity of the forming head 5 abuts against the surface of the discharge pipe 3, and the carbon nanomaterial enters the graded porous mold 6 for shaping. The carbon nanomaterial is formed into a single-wall graded porous structure by the graded porous mold 6. When the carbon nanotubes are discharged, a certain temperature still remains on the surface. The coolant in the coolant tank 8 is extracted by the circulating pump 9 and circulated in the spiral heat pipe 7. The residual temperature on the carbon nanotubes can be taken away by the coolant, so that the carbon nanotubes can be quickly cooled.

[0030] In this embodiment, if Figure 2 and Figure 3 As shown, a threaded connection seat 4 is provided on the surface of one side of the body 1 away from the natural gas tank 2, and the threaded connection seat 4 is located outside the discharge pipe 3. A threaded connection head is provided at one end of the forming head 5 close to the discharge pipe 3. The forming head 5 is threadedly connected to the threaded connection seat 4 through the threaded connection head. A connecting slip knot 14 is movably provided on the pipe at the suction end of the suction pump 11 and at both ends of the spiral heat transfer pipe 7.

[0031] It should be noted that the molding head 5 is threadedly connected to the threaded connection seat 4 through a threaded connector, and a connecting knot 14 is movably provided on the pipe at the suction end of the suction pump 11 and at both ends of the spiral heat pipe 7. After loosening the connecting knot 14, the molding head 5 can be quickly replaced to produce carbon nanotubes of different shapes.

[0032] In this embodiment, if Figure 3 and Figure 4 As shown, one end of the forming head 5 away from the discharge pipe 3 is fixedly connected to an air collecting hood 10, and the end surface of the air collecting hood 10 away from the forming head 5 is threadedly connected to an end cover 13, and a through hole is opened through the center of the surface of the end cover 13, and the through hole corresponds to the position of the graded porous mold 6, and an air storage tank 12 is installed on the top surface of the body 1, and an air suction pump 11 is installed on the top surface of the air storage tank 12, and the air suction end of the air suction pump 11 is connected to the top surface of the air collecting hood 10 through a pipeline.

[0033] It should be noted that after the end cover 13 is removed and the carbon nanotubes are allowed to pass through the through holes, the carbon nanotubes can be easily extended from the gas collecting hood 10. A small amount of natural gas will still be discharged from the discharge pipe 3 when the carbon nanotubes are discharged. The natural gas in the gas collecting hood 10 can be extracted by matching the suction pump 11 and the gas collecting hood 10 and stored in the gas storage tank 12. After the gas storage tank 12 is full of natural gas, it can be discharged through the exhaust pipe for unified recovery of the natural gas, which can reduce the emission of natural gas.

[0034] The working principle and use process of the utility model are as follows: when the machine body 1 synthesizes the carbon nanomaterial, natural gas needs to be injected into the machine body 1 through the natural gas tank 2, and the synthesized carbon nanomaterial is discharged from the discharge pipe 3. The end of the graded porous mold 6 in the inner cavity of the forming head 5 abuts against the surface of the discharge pipe 3, and the carbon nanomaterial enters the graded porous mold 6 for shaping. The carbon nanomaterial is shaped into a single-wall graded porous structure through the graded porous mold 6. When the carbon nanotubes are discharged, a certain temperature still remains on the surface. The coolant in the coolant tank 8 is extracted by the circulating pump 9 and the coolant is circulated in the spiral heat conducting pipe 7. The residual heat on the carbon nanotubes can be taken away by the coolant, so as to achieve The carbon nanotubes are cooled rapidly, and a small amount of natural gas will still be discharged from the discharge pipe 3 when the carbon nanotubes are discharged. The natural gas in the gas collecting hood 10 can be extracted by matching the air suction pump 11 and the gas collecting hood 10, and stored in the gas storage tank 12. After the gas storage tank 12 is full of natural gas, the natural gas can be discharged through the exhaust pipe for unified recovery, which can reduce the emission of natural gas. The forming head 5 is threadedly connected to the threaded connection seat 4 through a threaded connector. The pipe at the suction end of the air suction pump 11 and both ends of the spiral heat pipe 7 are movably provided with a connecting slipknot 14. After the connecting slipknot 14 is loosened, the forming head 5 can be quickly replaced to produce carbon nanotubes of different shapes.

[0035] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims or the equivalent forms of such scope and boundaries.

Claims

1. A single-walled carbon nanotube preparation device with a hierarchical porous structure, comprising a body (1), a natural gas tank (2) and a discharge pipe (3), It is characterized in that The natural gas tank (2) is fixed to a side surface of the machine body (1) via a bracket, and the discharge pipe (3) is arranged on a side surface of the machine body (1) away from the natural gas tank (2); The end of the discharge pipe (3) is movably provided with a forming head (5), the inner cavity of the forming head (5) is provided with a graded multi-porous mold (6), the end of the graded multi-porous mold (6) abuts against the surface of the discharge pipe (3), the inner cavity of the forming head (5) is provided with a spiral heat-conducting pipe (7), the upper surface of the body (1) is provided with a coolant tank (8), a circulation pump (9) is installed above the coolant tank (8), the discharge end of the circulation pump (9) is connected to the liquid inlet end of the spiral heat-conducting pipe (7), and the liquid outlet end of the spiral heat-conducting pipe (7) is conductively connected to the top of the side wall of the coolant tank (8); An end of the molding head (5) away from the discharge pipe (3) is fixedly connected to a gas collecting hood (10).

2. The device for preparing single-walled carbon nanotubes with a hierarchical porous structure according to claim 1, It is characterized in that A threaded connection seat (4) is provided on a surface of the machine body (1) on one side away from the natural gas tank (2), and the threaded connection seat (4) is located outside the discharge pipe (3).

3. The device for preparing single-walled carbon nanotubes with a hierarchical porous structure according to claim 2, It is characterized in that A threaded connector is provided at one end of the forming head (5) close to the discharge pipe (3), and the forming head (5) is threadably connected to the threaded connection seat (4) via the threaded connector.

4. The device for preparing single-walled carbon nanotubes with a hierarchical porous structure according to claim 3, It is characterized in that An end surface of the gas collecting hood (10) away from the forming head (5) is threadedly connected with an end cover (13).

5. The device for preparing single-walled carbon nanotubes with a hierarchical porous structure according to claim 4, It is characterized in that A through hole is provided at the center of the surface of the end cover (13), and the through hole corresponds to the position of the graded porous mold (6).

6. The device for preparing single-walled carbon nanotubes with a hierarchical porous structure according to claim 5, It is characterized in that An air storage tank (12) is installed on the top surface of the machine body (1), and an air suction pump (11) is installed on the top surface of the air storage tank (12). The air suction end of the air suction pump (11) is conductively connected to the top surface of the air collecting hood (10) through a pipeline.

7. The device for preparing single-walled carbon nanotubes with a hierarchical porous structure according to claim 6, It is characterized in that The pipeline at the air suction end of the air suction pump (11) and both ends of the spiral heat conducting pipe (7) are movably provided with connecting slip knots (14).

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