Device and method for preparing carbon nanotubes in batches

A carbon nanotube, batch technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve problems such as affecting preparation efficiency and production cost, ineffective collection, and inability to well solve carbon nanotube collection, etc. Achieve the effect of maintaining process stability, fast collection, and avoiding unstable airflow

Active Publication Date: 2019-11-15
JIANGXI COPPER TECHNOLOGY RESEARCH INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing preparation technologies cannot solve the problem of collecting carbon nanotubes well, especially when the floating chemical vapor deposition technology is used to prepare carbon nanotubes, a large number of carbon nanotubes are deposited inside the reaction chamber and cannot be collected effectively, which greatly affects the production of carbon nanotubes. Affect preparation efficiency and production cost

Method used

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  • Device and method for preparing carbon nanotubes in batches
  • Device and method for preparing carbon nanotubes in batches
  • Device and method for preparing carbon nanotubes in batches

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] The device for preparing carbon nanotubes in batches is composed of a tiltable tubular rotary furnace, a solid feeder, a solid powder separator, and a powder collector, which are sealed and connected in series in sequence, and are opened and closed by valves. The solid feeder is a screw feeding mechanism with inert gas protection; the material of the furnace tube of the tiltable tube rotary furnace is quartz tube material, the diameter of the middle is larger than the diameter of both ends, and the diameter of both ends: the middle diameter = 1:1.5, The furnace tube can rotate continuously, and the whole furnace body can be inclined downward at an angle of 0-45 degrees to the tail of the furnace tube; the solid powder separator is a double-layer water-cooled stainless steel barrel with stirring blades at the bottom, and inert gas can be introduced from the bottom; The collector is the way of filtration and separation; in addition, there are auxiliary systems including va...

Embodiment 2

[0073] The device for preparing carbon nanotubes in batches is composed of a tiltable tubular rotary furnace, a solid feeder, a solid powder separator, and a powder collector, which are sealed and connected in series in sequence, and are opened and closed by valves. The solid feeder is a screw feeding mechanism with inert gas protection; the material of the furnace tube of the tiltable tube rotary furnace is quartz tube material, the diameter of the middle is larger than the diameter of both ends, and the diameter of both ends: the middle diameter = 1:1.1, The furnace tube can rotate continuously, and the whole furnace body can be inclined downward at an angle of 0-45 degrees to the tail of the furnace tube; the solid powder separator is a double-layer water-cooled stainless steel barrel with stirring blades at the bottom, and inert gas can be introduced from the bottom; The collector is a cyclone separation method; in addition, there are auxiliary systems including vacuum syst...

Embodiment 3

[0076] The device for preparing carbon nanotubes in batches is composed of a tiltable tubular rotary furnace, a solid feeder, a solid powder separator, and a powder collector, which are sealed and connected in series in sequence, and are opened and closed by valves. The solid feeder is a screw feeding mechanism with inert gas protection; the material of the furnace tube of the tiltable tube rotary furnace is quartz tube material, the diameter of the middle is larger than the diameter of both ends, and the diameter of both ends: the middle diameter = 1:5, The furnace tube can rotate continuously, and the whole furnace body can be inclined downward at an angle of 0-45 degrees to the tail of the furnace tube; the solid powder separator is a double-layer water-cooled stainless steel barrel with stirring blades at the bottom, and inert gas can be introduced from the bottom; The collector is the way of filtration and separation; in addition, there are auxiliary systems including vacu...

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PUM

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Abstract

The invention discloses a device and a method for preparing carbon nanotubes in batches. The device is composed of a tiltable tubular rotary furnace, a solid feeder, a solid powder separator, a powdercollector and an auxiliary system. The device and the method are based on a technology for preparing carbon nanotubes by floating catalytic chemical vapor deposition, inorganic ceramic beads adoptedas a collection carrier are placed in the high temperature zone of the tiltable tubular rotary furnace, and a carbon source and a catalyst are introduced for the growth of the carbon nanotubes; and after the growth is completed, a furnace body is tilted and rotated at the same time, the carbon nanotubes deposited on the tube wall of the rotary furnace are scraped off by the ceramic beads, enter the solid powder separator and are separated, and a carbon nanotube powder is brought into the powder collector by an inert gas current, and is collected to finally obtain the carbon nanotubes. The device and the method can realize continuous batch production of the carbon nanotube, solves the problem that carbon nanotube product is prone to deposit on the tube wall of the furnace under a stable gasfield distribution reaction condition, obtain the high-quality carbon nanotubes, can be easily amplified to realize industrialization, and have great economic values.

Description

technical field [0001] The invention belongs to the technical field of new materials and relates to a nano-carbon material, in particular to a device and method for preparing carbon nanotubes in batches. Background technique [0002] The unique nanotube tubular structure of carbon nanotubes endows them with excellent comprehensive properties, and has important applications in the fields of mechanical reinforcement, conductive filling, and thermal conductivity modification. Among them, multi-walled carbon nanotubes have been industrialized and widely used in the field of lithium battery conductive additives. New application fields are also becoming more mature, gradually showing a huge market space. Therefore, the scale-controllable preparation of carbon nanotubes and the realization of continuous mass production are major demands for the further development of the current carbon nanotube preparation technology. At present, the mainstream preparation method in the field of c...

Claims

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Application Information

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IPC IPC(8): C01B32/164
CPCC01B32/164
Inventor 陈名海袁鑫鑫常艺
Owner JIANGXI COPPER TECHNOLOGY RESEARCH INSTITUTE CO LTD
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