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Device and method for directly electrifying and purifying carbon nano tube

A carbon nanotube and weighing device technology, applied in the fields of carbon nanotubes, chemical instruments and methods, nanocarbons, etc., can solve the problems of uneven temperature distribution of reaction materials, low energy utilization rate, slow heating efficiency, etc., and achieve protection Graphite equipment, the effect of improving energy conversion efficiency and fast heating rate

Inactive Publication Date: 2020-07-14
甘海半导体材料(上海)有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problems of slow heating efficiency, low energy utilization rate, high consumption, and uneven temperature distribution of reaction materials, the present invention provides a device and method for electrifying and purifying carbon nanotubes, and directly purifies the carbon nanotube materials in the reactor. A device and process method for continuously purifying carbon nanotubes with chlorine or hydrogen chloride gas after being energized and heated. For this device, graphite is used as the reactor liner, combined with the pouring material frame, and the carbon nanotubes in the reactor are directly energized. A continuous industrialized purification device that uses acid gas and granular carbon nanotubes for reaction purification. The device of the present invention has a high purity of carbon nanotubes, which can reach more than 99.99%, and the total content of iron, cobalt and nickel is less than 10ppm

Method used

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  • Device and method for directly electrifying and purifying carbon nano tube
  • Device and method for directly electrifying and purifying carbon nano tube
  • Device and method for directly electrifying and purifying carbon nano tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1 is carried out the device that electrification purifies carbon nanotube

[0049] A device for electrifying and purifying carbon nanotubes, including a main reactor, which includes a material preheating section 9, a low-temperature heating reaction section 10, a high-temperature heating reaction section 11, and a material cooling section arranged in sequence from top to bottom 22. The length ratio of the material preheating section 9, the low-temperature heating reaction section 10, the high-temperature heating reaction section 11, and the material cooling section 22 is 2:4:4:5; the heating form of the main reactor is to directly heat the carbon nanotube material power ups.

[0050] The upper end of the main reactor is connected with a feed valve 1, and the feed valve 1 is connected with a feed weighing device 31, and the feed weigh device 31 is connected with a constant pressure tank 32, and the constant pressure tank 32 is connected with a carbon nanotube ...

Embodiment 2

[0056] Embodiment 2 carries out the method for electrification purification to carbon nanotube

[0057] Since the device needs to be filled with part of the carbon nanotube material in the main reactor before operation, for this part of the filled material, the iron-cobalt-aluminum carbon nanotube material to be purified can be used, and the purified iron-cobalt-aluminum can also be used. Department of carbon nanotube materials.

[0058] (1) Under the protection of argon, 35 kilograms of iron-cobalt-aluminum-based carbon nanotube materials to be purified with a diameter of 4 mm are preloaded at the bottom of the main reaction;

[0059] (2) The system performs continuous vacuum pumping and argon replacement operation, and the oxygen content is detected to be lower than 0.15%;

[0060] (3) Under the protection of argon, the carbon nanotube material in the reactor is energized, and the temperature of the low-temperature heating reaction section is controlled to be 1250°C, and th...

Embodiment 3

[0067] Embodiment 3: the method that carbon nanotube is carried out electrification purification

[0068] (1) Under the protection of argon, 50 kilograms of purified iron-nickel-magnesium-based carbon nanotube materials with a diameter of 9 mm are preloaded at the bottom of the main reaction;

[0069] (2) The system performs continuous vacuum pumping and argon replacement operation, and the detected oxygen content is lower than 0.1%;

[0070] (3) Under the protection of argon, the carbon nanotube material in the reactor is energized, and the temperature of the low-temperature heating reaction section is controlled to be 1400°C, and the temperature of the high-temperature heating reaction section is 2230°C;

[0071] (4) The iron-nickel-magnesium-based carbon nanotube material to be purified is continuously transported from the carbon nanotube storage tank to the constant pressure tank through pipelines;

[0072] (5) Fe-Ni-Mg carbon nanotubes to be purified enter the main react...

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Abstract

The invention relates to the technical field of carbon nano tube purification, in particular to a device and a method for directly electrifying and purifying a carbon nano tube. The device comprises amain reactor, the main reactor comprises a material preheating section, a low-temperature heating reaction section, a high-temperature heating reaction section and a material cooling section which are sequentially arranged from top to bottom, the upper end of the main reactor is connected with a feeding valve, the feeding valve is connected with a feeding weighing device, the feeding weighing device is connected with a constant-pressure tank, and the constant-pressure tank is connected with a carbon nano tube storage tank; the invention discloses a device and a process method for directly electrifying and heating a carbon nano tube material in a reactor and then continuously purifying carbon nano tubes by adopting chlorine or hydrogen chloride gas. According to the continuous industrial purification device, graphite is adopted as an inner container of a reactor, a pouring material frame is combined, carbon nano tubes in the reactor are directly powered on, and acid gas and granular carbon nano tubes are used for reaction purification.

Description

technical field [0001] The invention relates to the technical field of carbon nanotube purification, in particular to a device and method for directly electrifying and purifying carbon nanotubes. Background technique [0002] As a one-dimensional nanomaterial, carbon nanotubes have excellent physical and mechanical properties. They are mainly coaxial circular tubes with several to dozens of layers of carbon atoms arranged in a hexagonal shape. It has a very large aspect ratio, the diameter is usually between 1-100nm, and the length is several microns to hundreds of microns. It is precisely because of its sP2 structure and huge aspect ratio that carbon nanotubes perform very well in terms of mechanics, electricity, and electrical and thermal conductivity. Due to its excellent properties, carbon nanotubes have broad and potential application prospects in many fields such as catalyst supports, rubber-plastic composite materials, electrochemical materials, and photoelectric sen...

Claims

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Application Information

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IPC IPC(8): C01B32/17
CPCC01B32/17C01B2202/30
Inventor 吕振华李岩李龙利耿磊王莲莲
Owner 甘海半导体材料(上海)有限公司
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