Production equipment for few-walled carbon nanotube catalyst

Abstract

The invention relates to the technical field of carbon nanotube catalysts, in particular to production equipment of a few-walled carbon nanotube catalyst, which comprises a reactor, the reactor is connected with a roasting furnace through a conveying pipe, a first motor is mounted at the top end of the reactor, the first motor is connected with a threaded block through a screw, and the threaded block is connected with stirring blades. A first discharger is fixedly installed in the middle of the reactor, a second discharger is arranged on the upper side of the first discharger, a drying component is arranged on the lower side of the reactor and comprises a heating plate, a filter screen is arranged on the lower side of the heating plate, a second motor is arranged on the lower side of the filter screen, and the second motor is connected with a movable rod on the upper side of the filter screen. Through the synergistic effect of the first discharger and the second discharger in the reactor, the quality and conductivity of the few-walled carbon nanotube catalyst can be improved; the catalyst particles are dried through the drying part and then conveyed into the roasting furnace through the conveying pipe to be prepared into a catalyst product. The device is convenient and efficient to use and good in practicability.

Description

Technical Field

[0001] The invention relates to the technical field of carbon nanotube catalysts, in particular to production equipment for oligo-walled carbon nanotube catalysts. Background Art

[0002] As a one-dimensional nanomaterial, carbon nanotubes have excellent physical and mechanical properties. They are mainly coaxial circular tubes composed of several to dozens of layers of carbon atoms arranged in a hexagonal pattern. They have a very large aspect ratio, with a diameter usually between 1-100nm and a length between several microns and tens of centimeters. It is precisely because of its large aspect ratio that carbon nanotubes have excellent mechanical, electrical, electrical and thermal conductivity. Due to its excellent performance, carbon nanotubes have broad and potential application prospects in many fields such as catalyst carriers, rubber and plastic composites, electrochemical materials, and photoelectric sensors.

[0003] In the current carbon nanotube preparation process, except for some DC arc methods that do not require catalysts, other methods all require the participation of catalysts. For example, in the production of oligo-walled carbon nanotubes in a fluidized bed reactor, the catalyst used can effectively increase the yield of oligo-walled carbon nanotubes. The oligo-walled carbon nanotube catalysts produced in the prior art are of low quality and have poor electrical conductivity. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a production device for a oligo-walled carbon nanotube catalyst to solve the above problem.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a production equipment for oligo-walled carbon nanotube catalysts, including a reactor, the reactor is connected to a calcining furnace through a conveying pipe, a first motor is installed on the top of the reactor, the first motor is connected to a threaded block through a screw, the threaded block is connected to a stirring blade, a first discharger is fixedly installed in the middle of the reactor, and a second discharger is provided on the upper side of the first discharger.

[0006] As a further solution of the present invention, a drying component is provided at the lower side of the reactor, the drying component includes a heating plate, a filter is provided at the lower side of the heating plate, a second motor is provided at the lower side of the filter, and the second motor is connected to a movable rod at the upper side of the filter.

[0007] As a further solution of the present invention, the discharge voltage of the first arrester is -0.3--0.2V, and the discharge time is 140-240s.

[0008] As a further solution of the present invention, there are at least four first arresters, which are arranged at equal intervals.

[0009] As a further solution of the present invention, the discharge voltage of the second arrester is -0.3-0.3V, and the discharge time is 25-45min.

[0010] As a further solution of the present invention, there are at least two second arresters, which are arranged at equal intervals.

[0011] As a further solution of the present invention, a third motor is installed at the top end of the conveying pipe, and a screw conveyor is connected to the lower end of the third motor.

[0012] As a further solution of the present invention, a preheating part is provided on the right side of the roasting furnace, the preheating part includes a preheating tube, a filtering mechanism is provided on the left side of the preheating tube, and a negative pressure mechanism is provided on the left side of the filtering mechanism.

[0013] As a further solution of the present invention, the preheating tube is in a spiral structure, and a heating block is connected to the outside of the preheating tube.

[0014] As a further solution of the present invention, the filtering mechanism includes a fixed frame, and a plurality of filter screens are inserted in the fixed frame; the negative pressure mechanism includes a fourth motor, and the fourth motor is connected to a fan blade.

[0015] Since the present invention adopts the above technical solution, the advantages and positive effects of the present invention are: the quality and conductivity of the oligo-walled carbon nanotube catalyst can be improved through the synergistic effect of the first discharger and the second discharger in the reactor; the catalyst particles are dried by the drying component and then transported to the calcining furnace by the conveying pipe to form a catalyst product. The present invention is convenient and efficient to use and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a production device for a oligo-walled carbon nanotube catalyst according to the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of a production device for a oligo-walled carbon nanotube catalyst of the present invention. In the figure: 1 is a reactor, 2 is a conveying pipe, 3 is a roasting furnace, 4 is a first motor, 5 is a threaded block, 6 is a first discharger, 7 is a second discharger, 8 is a heating plate, 9 is a second motor, 10 is a movable rod, 11 is a third motor, 12 is a screw conveyor, 13 is a preheating tube, 14 is a heating block, and 15 is a fourth motor. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] like Figure 1~2As shown, the present invention is a production equipment for oligo-walled carbon nanotube catalyst, comprising a reactor 1, the reactor 1 is connected to a roasting furnace 3 through a delivery pipe 2, a first motor 4 is installed at the top of the reactor 1, the first motor 4 is connected to a threaded block 5 through a screw, the threaded block 5 is connected to a stirring blade, a first discharger 6 is fixedly installed in the middle of the reactor 1, and a second discharger 7 is arranged on the upper side of the first discharger 6. The first motor 4 drives the screw to rotate, so that the stirring blade on the threaded block 5 can rotate up and down, and then the deposition solution and the carbon nanotubes can be turned over to accelerate the reaction rate; and then the catalyst is transported to the roasting furnace 3 by the delivery pipe 2, and the present invention can effectively improve the quality and conductivity of the oligo-walled carbon nanotube catalyst.

[0020] In the present invention, a drying component is provided at the lower side of the reactor 1, and the drying component includes a heating plate 8, a filter screen is provided at the lower side of the heating plate 8, a second motor 9 is provided at the lower side of the filter screen, and the second motor 9 is connected to a movable rod 10 at the upper side of the filter screen. The second motor 9 drives the movable rod 10 to rotate on the filter screen, which can speed up the drying of the catalyst particles.

[0021] In the present invention, the discharge voltage of the first discharger 6 is -0.3-0.2V, the discharge time is 140-240s, and there are at least 4 first dischargers 6 arranged at equal intervals. The first discharger 6 radiates voltage so that the carbon nanotubes and the deposition solution form deposition nuclei. Multiple first dischargers 6 arranged at equal intervals can accelerate the nucleation of the catalyst.

[0022] The present invention further provides that the discharge voltage of the second discharger 7 is -0.3-0.3V, the discharge time is 25-45min, and there are at least two second dischargers 7 arranged at equal intervals. The second discharger 7 radiates a pulse voltage, the high voltage is 0.2-0.3V, and the low voltage is -0.2-0.3V; multiple second dischargers 7 arranged at equal intervals can accelerate the growth of the catalyst.

[0023] In the present invention, a third motor 11 is installed at the top of the delivery pipe 2, and a screw conveyor 12 is connected to the lower end of the third motor 11. The third motor 11 drives the screw conveyor 12 to rotate, so as to transport the dried catalyst.

[0024] In the present invention, a preheating part is provided on the right side of the roasting furnace 3, and the preheating part includes a preheating tube 13. A filtering mechanism is provided on the left side of the preheating tube 13, and a negative pressure mechanism is provided on the left side of the filtering mechanism. The negative pressure mechanism provides negative pressure, and air can be continuously sucked into the preheating part. The preheated air is filtered by the filtering mechanism, which can improve the quality of the catalyst.

[0025] In the present invention, the preheating tube 13 is in a spiral structure, and a heating block is connected to the outside of the preheating tube 13. The preheating tube 13 in a spiral structure can make the air stay in the pipe longer, so that the heating block only needs a lower temperature to preheat the air.

[0026] In the present invention, the filtering mechanism includes a fixed frame, and a plurality of filter screens are inserted in the fixed frame; the negative pressure mechanism includes a fourth motor 14, and the fourth motor 14 is connected to a fan blade. The multi-layer filter screen in the fixed frame can effectively filter the gas in the preheating tube 13 to avoid affecting the quality of the catalyst; the fourth motor 14 drives the fan blade to rotate to form a negative pressure, which can continuously suck in air.

[0027] Although specific embodiments of the present invention are described above, those skilled in the art should understand that these are merely examples and that various changes or modifications may be made to the embodiments without departing from the principles and essence of the present invention. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. A production device for oligo-walled carbon nanotube catalysts, characterized in that: The invention comprises a reactor (1), wherein the reactor (1) is connected to a roasting furnace (3) via a conveying pipe (2), a first motor (4) is installed at the top of the reactor (1), the first motor (4) is connected to a threaded block (5) via a screw, the threaded block (5) is connected to a stirring blade, a first discharger (6) is fixedly installed in the middle of the reactor (1), and a second discharger (7) is provided on the upper side of the first discharger (6).

2. The production equipment of a oligo-walled carbon nanotube catalyst according to claim 1, characterized in that: A drying component is provided at the lower side of the reactor (1), the drying component comprising a heating plate (8), a filter is provided at the lower side of the heating plate (8), a second motor (9) is provided at the lower side of the filter, and the second motor (9) is connected to a movable rod (10) at the upper side of the filter.

3. The production equipment of the oligo-walled carbon nanotube catalyst according to claim 1, characterized in that: The discharge voltage of the first discharger (6) is -0.3-0.2V, and the discharge time is 140-240s.

4. The production equipment of the oligo-walled carbon nanotube catalyst according to claim 3, characterized in that: There are at least four first arresters (6) arranged at equal intervals.

5. The production equipment of the oligo-walled carbon nanotube catalyst according to claim 1, characterized in that: The discharge voltage of the second discharger (7) is -0.3-0.3V, and the discharge time is 25-45 minutes.

6. The production equipment of the oligo-walled carbon nanotube catalyst according to claim 5, characterized in that: There are at least two second arresters (7) which are arranged at equal intervals.

7. The production equipment of the oligo-walled carbon nanotube catalyst according to claim 1, characterized in that: A third motor (11) is installed at the top end of the conveying pipe (2), and a screw conveyor (12) is connected to the lower end of the third motor (11).

8. The production equipment of the oligo-walled carbon nanotube catalyst according to claim 1, characterized in that: A preheating section is provided on the right side of the roasting furnace (3), the preheating section comprises a preheating tube (13), a filtering mechanism is provided on the left side of the preheating tube (13), and a negative pressure mechanism is provided on the left side of the filtering mechanism.

9. The production equipment of the oligo-walled carbon nanotube catalyst according to claim 8, characterized in that: The preheating tube (13) has a spiral structure, and a heating block () is connected to the outside of the preheating tube (13).

10. The production equipment of the oligo-walled carbon nanotube catalyst according to claim 8, characterized in that: The filtering mechanism comprises a fixed frame, in which a plurality of filter screens are inserted; the negative pressure mechanism comprises a fourth motor (14), and the fourth motor (14) is connected to a fan blade.

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