Purifying device for carbon nanotube production

Abstract

The utility model discloses a carbon nanotube action purification device which comprises a purification furnace body and a feed port arranged on one side of the purification furnace body, an exhaust pipeline connected with the purification furnace body is arranged on the other side of the purification furnace body, and an absorption furnace body is arranged at one end of the exhaust pipeline far away from the purification furnace body. A cooling system is arranged at the end, away from the exhaust pipeline, of the absorption furnace body, and a collecting device is arranged at the outlet end of the cooling system. The carbon nanotube purification furnace has the beneficial effects that metal catalyst impurities in carbon nanotubes can be effectively removed through the purification furnace body, the absorption furnace body and the cooling system, the purity of the carbon nanotubes is improved, meanwhile, airflow can be continuously introduced into the purification furnace body through the introduction opening, and wide-area heating is achieved in cooperation with the heating plate; the structure of the carbon nano tube is not damaged in the purification process, and excellent physical and chemical properties of the carbon nano tube are kept; the device is simple in structure and convenient to operate, and can be widely applied to the preparation process of the carbon nanotubes.

Description

Technical Field

[0001] The utility model relates to the field of carbon nanotube production, in particular to a carbon nanotube purification device. Background Art

[0002] Carbon nanotubes, also known as buckytubes, are one-dimensional quantum materials with a special structure. Their radial dimensions are in the nanometer range, their axial dimensions are in the micrometer range, and both ends of the tubes are basically sealed. Carbon nanotubes are mainly composed of several to dozens of layers of coaxial circular tubes of carbon atoms arranged in a hexagonal pattern. The distance between layers is fixed, about 0.34nm, and the diameter is generally 2 to 20nm. And according to the different orientations of the carbon hexagons along the axial direction, they can be divided into three types: zigzag, armchair, and spiral. Among them, spiral carbon nanotubes have chirality, while zigzag and armchair carbon nanotubes do not have chirality.

[0003] During the actual preparation, due to the effect of the metal catalyst, metal catalyst impurities will be generated on the surface of the carbon nanotubes, affecting the purity of the nanotubes, and thus impurity removal treatment is required to reduce the impact of the metal catalyst impurities.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related art, the utility model proposes a carbon nanotube control purification device to overcome the above technical problems existing in the existing related art.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A carbon nanotube control purification device comprises a purification furnace body and a feed port arranged on one side of the purification furnace body, an exhaust pipe connected to the purification furnace body is arranged on the other side of the purification furnace body, an absorption furnace body is arranged on one end of the exhaust pipe away from the purification furnace body, a cooling system is arranged on one end of the absorption furnace body away from the exhaust pipe, and a collecting device is arranged at the outlet end of the cooling system.

[0008] Preferably, an inlet connected to an air injection machine is provided on one side of the bottom end of the purification furnace body, a temperature sensor is provided inside the purification furnace body, an oxygen detector is provided on one side of the temperature sensor, and a control panel electrically connected to the temperature sensor and the oxygen detector is provided on the outer surface of the purification furnace body.

[0009] Preferably, a heating plate is provided at the bottom inner end of the purification furnace body, and an electric valve is provided on the inlet.

[0010] Preferably, the exhaust pipe is made of a high temperature resistant inert material, and the ends of the purification furnace body and the absorption furnace body close to each other are both provided with sealing grooves matching the two ends of the exhaust pipe.

[0011] Preferably, the absorption furnace body is provided with a conveying pipe arranged obliquely downward and matching the nanotubes, a plurality of groups of equidistantly arranged air vents are opened on the outer wall of the conveying pipe, a plurality of groups of activated carbon adsorption plates are arranged on the inner wall of the absorption furnace body, a plurality of groups of mounting grooves matching the activated carbon adsorption plates are arranged on the inner wall of the absorption furnace body, and an electric retractable plate is provided at the opening of any group of the mounting grooves.

[0012] Preferably, a buffer slope is provided at the junction of the delivery pipeline and the exhaust pipeline, and the other end of the delivery pipeline extends into the cooling system.

[0013] Preferably, the cooling system comprises a refrigeration box, the refrigeration box is provided with an interface matching the delivery pipeline, the refrigeration box is provided with a second temperature sensor, the bottom end of the refrigeration box is provided with a collection box, and the top end of the refrigeration box is provided with a cold air outlet.

[0014] Preferably, the collecting device comprises a collecting box, and a second conveying pipeline is provided between the collecting box and the refrigerating box.

[0015] Preferably, a buffer pad is provided in the collection box.

[0016] Preferably, a valve is provided at the feed inlet port.

[0017] The beneficial effects of the utility model are as follows: the metal catalyst impurities in the carbon nanotubes can be effectively removed through the purification furnace body, the absorption furnace body and the cooling system, thereby improving the purity of the carbon nanotubes; at the same time, air flow can be continuously introduced into the purification furnace body through the inlet, and a relatively wide area of ​​heating can be achieved in conjunction with the heating plate; the structure of the carbon nanotubes will not be destroyed during the purification process, and their excellent physical and chemical properties are maintained; the device has a simple structure and is easy to operate, and can be widely used in the preparation process of carbon nanotubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is an appearance diagram of a carbon nanotube control purification device according to an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of a purification furnace of a carbon nanotube-controlled purification device according to an embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of an absorption furnace of a carbon nanotube-controlled purification device according to an embodiment of the utility model;

[0022] Figure 4 It is a schematic structural diagram of a cooling box and a collection box of a carbon nanotube control purification device according to an embodiment of the utility model.

[0023] In the figure:

[0024] 1. Purification furnace body; 2. Feed inlet; 3. Exhaust duct; 4. Absorption furnace body; 5. Cooling system; 6. Collecting device; 7. Access port; 8. Temperature sensor; 9. Oxygen detector; 10. Control panel; 11. Heating plate; 12. Sealing groove; 13. Conveying pipeline; 14. Air vent; 15. Activated carbon adsorption plate; 16. Mounting groove; 17. Refrigeration box; 18. Collecting box; 19. Cold air outlet; 20. Collecting box; 21. Conveying pipeline II. DETAILED DESCRIPTION

[0025] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] According to an embodiment of the utility model, a carbon nanotube control purification device is provided.

[0027] Embodiment 1;

[0028] like Figure 1 to Figure 2 As shown, the carbon nanotube control purification device according to the embodiment of the utility model comprises a purification furnace body 1 and a feed port 2 arranged on one side of the purification furnace body 1, an exhaust pipe 3 connected to the purification furnace body 1 is arranged on the other side of the purification furnace body 1, an absorption furnace body 4 is arranged on the end of the exhaust pipe 3 away from the purification furnace body 1, a cooling system 5 is arranged on the end of the absorption furnace body 4 away from the exhaust pipe 3, a collecting device 6 is arranged at the outlet end of the cooling system 5, and a valve is arranged at the feed port 2.

[0029] Embodiment 2:

[0030] like Figures 2 to 4As shown, a through port 7 connected to an air injector is provided at one side of the bottom end of the purification furnace body 1, a temperature sensor 8 is provided inside the purification furnace body 1, an oxygen detector 9 is provided at one side of the temperature sensor 8, a control panel 10 electrically connected to the temperature sensor 8 and the oxygen detector 9 is provided on the outer surface of the purification furnace body 1, a heating plate 11 is provided at the bottom end of the purification furnace body 1, an electric valve is provided on the through port 7, the exhaust pipe 3 is made of a high-temperature resistant inert material, and a sealing groove 12 matching the two ends of the exhaust pipe 3 is provided at one end of the purification furnace body 1 and the absorption furnace body 4 that are close to each other.

[0031] Embodiment three;

[0032] like Figure 3 As shown, the absorption furnace body 4 is provided with a conveying pipe 13 which is arranged obliquely downward and matches the nanotubes, and the outer wall of the conveying pipe 13 is provided with a plurality of groups of equidistantly arranged vent holes 14, and the inner wall of the absorption furnace body 4 is provided with a plurality of groups of activated carbon adsorption plates 15, and the inner wall of the absorption furnace body 4 is provided with a plurality of groups of mounting grooves 16 which match the activated carbon adsorption plates 15, and an electric telescopic plate is provided at the opening of any group of the mounting grooves 16, and a buffer slope is provided at the junction of the conveying pipe 13 and the exhaust pipe 3, and the other end of the conveying pipe 13 extends into the cooling system 5, and the cooling system 5 includes a refrigeration box 17, and the refrigeration box 17 is provided with an interface which matches the conveying pipe 13, and the refrigeration box 17 is provided with a second temperature sensor, and the bottom end of the refrigeration box 17 is provided with a collecting box 18, and the top end of the refrigeration box 17 is provided with a cold air outlet 19, and the collecting device 6 includes a collecting box 20, and a conveying pipe 21 is provided between the collecting box 20 and the refrigeration box 17, and a buffer pad is provided in the collecting box 20.

[0033] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0034] In actual application, during the purification process of carbon nanotubes, first, the carbon nanotubes are fed into the purification furnace body 1 through the feed port 2, and the valve is closed. The temperature and oxygen content in the purification furnace body 1 are set through the control panel 10, and the temperature and oxygen content in the purification furnace body 1 are detected through the temperature sensor 8 and the oxygen detector 9. When the temperature or oxygen content is higher or lower than the set value, the control panel 10 will automatically open or close the heating plate 11 and the electric valve on the inlet 7 to maintain the temperature and oxygen content in the purification furnace body 1 within the set range. The carbon nanotubes are subjected to high-temperature oxidation treatment in the purification furnace body 1 to remove impurities and oxides; the treated carbon nanotubes enter the absorption furnace body 4 through the exhaust pipe 3, and in the conveying pipe 13, air is injected into the carbon nanotubes through the vent 14 to further oxidize them and remove the remaining impurities. At the same time, the activated carbon adsorption plate 15 adsorbs and purifies the metal chloride vapor, and the treated carbon nanotubes enter the refrigeration box 17 of the cooling system 5 through the conveying pipe 13, and the cold air released by the cold air outlet 19 cools the carbon nanotubes. The cooled carbon nanotubes enter the collection box 20 of the collection device 6 through the conveying pipe 21. The buffer pad in the collection box 20 can reduce the impact of the carbon nanotubes during the collection process to avoid damage (and in this process, some metal chloride vapor that has not been removed by the activated carbon will condense into liquid under the condensation of cold air, and then fall into the collection box 18 for subsequent processing).

[0035] In summary, with the aid of the above-mentioned technical scheme of the utility model, the metal catalyst impurities in the carbon nanotubes can be effectively removed through the purification furnace body 1, the absorption furnace body 4 and the cooling system 5, thereby improving the purity of the carbon nanotubes. At the same time, air flow can be continuously introduced into the purification furnace body 1 through the inlet 7, and a relatively wide area heating can be achieved in conjunction with the heating plate. The structure of the carbon nanotubes will not be destroyed during the purification process, and their excellent physical and chemical properties will be maintained. The device has a simple structure and is easy to operate, and can be widely used in the preparation process of carbon nanotubes.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A carbon nanotube control purification device, characterized in that: The invention comprises a purification furnace body (1) and a feed port (2) arranged on one side of the purification furnace body (1); an exhaust pipe (3) connected to the purification furnace body (1) is arranged on the other side of the purification furnace body (1); an absorption furnace body (4) is arranged on the end of the exhaust pipe (3) away from the purification furnace body (1); a cooling system (5) is arranged on the end of the absorption furnace body (4) away from the exhaust pipe (3); and a collecting device (6) is arranged at the outlet end of the cooling system (5).

2. The carbon nanotube purification device according to claim 1, characterized in that: A through port (7) connected to an air injector is provided on one side of the bottom end of the purification furnace body (1), a temperature sensor (8) is provided inside the purification furnace body (1), an oxygen detector (9) is provided on one side of the temperature sensor (8), and a control panel (10) electrically connected to the temperature sensor (8) and the oxygen detector (9) is provided on the outer surface of the purification furnace body (1).

3. The carbon nanotube purification device according to claim 2, characterized in that: A heating plate (11) is provided at the bottom of the purification furnace body (1), and an electric valve is provided on the inlet (7).

4. The carbon nanotube purification device according to claim 1, characterized in that: The exhaust pipe (3) is made of a high temperature resistant inert material, and the ends of the purification furnace body (1) and the absorption furnace body (4) close to each other are both provided with sealing grooves (12) matching the two ends of the exhaust pipe (3).

5. The carbon nanotube purification device according to claim 1, characterized in that: The absorption furnace body (4) is provided with a conveying pipe (13) arranged obliquely downward and matching the nanotubes, and the outer wall of the conveying pipe (13) is provided with a plurality of groups of equidistantly arranged vent holes (14), and the inner wall of the absorption furnace body (4) is provided with a plurality of groups of activated carbon adsorption plates (15), and the inner wall of the absorption furnace body (4) is provided with a plurality of groups of mounting grooves (16) matching the activated carbon adsorption plates (15), and an electric telescopic plate is provided at the opening of any group of the mounting grooves (16).

6. The carbon nanotube control purification device according to claim 5, characterized in that: A buffer slope is provided at the junction of the delivery pipeline (13) and the exhaust pipeline (3), and the other end of the delivery pipeline (13) extends into the cooling system (5).

7. The carbon nanotube purification device according to claim 5, characterized in that: The cooling system (5) comprises a refrigeration box (17), the refrigeration box (17) is provided with an interface matching the conveying pipeline (13), the refrigeration box (17) is provided with a second temperature sensor, the bottom end of the refrigeration box (17) is provided with a collection box (18), and the top end of the refrigeration box (17) is provided with a cold air outlet (19).

8. The carbon nanotube purification device according to claim 7, characterized in that: The collecting device (6) comprises a collecting box (20), and a second conveying pipeline (21) is provided between the collecting box (20) and the refrigerating box (17).

9. The carbon nanotube purification device according to claim 8, characterized in that: A buffer pad is provided inside the collection box (20).

10. The carbon nanotube purification device according to claim 1, characterized in that: A valve is provided at the port of the feed inlet (2).

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