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Acetylene and carbon nanotube preparing plant

A technology of carbon nanotubes and acetylene, applied in a device for preparing acetylene and carbon nanotubes, in the field of devices for preparing acetylene and carbon nanotubes, can solve the problems of low catalyst utilization efficiency, complicated process, and low thermal efficiency, and achieve structural Simple and scientific, easy to operate, and the effect of improving utilization efficiency

Inactive Publication Date: 2004-02-04
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the fixed bed, due to the limited gas-solid contact, the utilization efficiency of the catalyst is relatively low, and the moving bed is a moving fixed bed, which also has similar problems, and it can realize a continuous process
In convective fluidization, the gas-solid contact is good and the catalyst utilization rate is high, but the process is more complicated and difficult to control
The above patents have a common feature that the heat of the reaction system is supplied by external heating, so the thermal efficiency is low

Method used

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  • Acetylene and carbon nanotube preparing plant
  • Acetylene and carbon nanotube preparing plant
  • Acetylene and carbon nanotube preparing plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0018] First connect the plasma generator 1, the feed mixer 2, the descending reactor 3, the separation collector 4, and the powder feeder 5 in order from top to bottom, and the powder feeder 5 passes through the powder supply pipeline and the feed mixer 2 connect. The plasma generator 1 is placed above the descending reactor 3 , and the arc jet generated by the plasma generator 1 passes through the central channel of the feed mixer 2 and extends into the descending reactor 3 . The diameter of the annular cooling channel 202 inner central channel of the feed mixer 2 is 15 millimeters, and the nozzle 201 passes the outer wall of the cooling channel 202, passes through the cooling channel area, passes through the inner wall of the cooling channel 202, communicates with the central channel, and the nozzle 201 The angle of inclination is zero degrees (such as figure 2 -A shown). The inner diameter of the descending reactor 3 is 15 mm, and the height is 350 mm. The reactor wall ...

Embodiment approach 2

[0020] Other parts are the same as embodiment 1, in addition, the diameter of the inner central channel of the annular cooling channel 202 of the feed mixer 2 is 35 millimeters, and the angle of inclination of the nozzle 201 is 45 degrees (as figure 2 -B shown), the inner diameter of the descending reactor 3 is 35 mm, the height is 800 mm, and the diameter of the delivery pipe 511 is 10 mm.

Embodiment approach 3

[0022] Other parts are the same as embodiment 1, in addition, the diameter of the inner central channel of the annular cooling channel 202 of feed mixer 2 is 20 millimeters, and the angle of inclination of nozzle 201 is-45 degree (as figure 2 -C shown), the inner diameter of the descending reactor 3 is 20 mm, the height is 600 mm, and the diameter of the delivery pipe 511 is 8 mm.

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Abstract

The present invention discloses an acetylene and carbon nanometer tube preparing plant. It features that the plant comprises plasma generator, material mixer, down-going reactor and powder feeder, the arc plasma technology and the down-going reactor technology are combined organically to realize the continuous preparation of acetylene and carbon nanometer tube. Energy for the reaction course comes from arc plasma and the reaction is in internal heat mode. The present invention has the advantages of high heat transferring, high system temperature, fast, reaction speed, short flow-path and simple operation.

Description

1. Technical field [0001] The invention relates to a device for preparing acetylene and carbon nanotubes, which belongs to the intersecting field of chemical reaction engineering, plasma physics and material science. Specifically, it is a device that continuously prepares acetylene and carbon nanotubes with arc plasma technology as the core and combined with down-flow reactor technology. 2. Background technology [0002] The traditional processes for the preparation of acetylene include calcium carbide hydrolysis and hydrocarbon gas semi-oxidation. Calcium carbide hydrolysis has a long process, many devices are used, and the operation is cumbersome and complicated, while the device used for the semi-oxidation of hydrocarbon gas is too large to be used in small and medium-sized production, and this device is only suitable for gaseous hydrocarbons as raw materials. Using arc plasma technology and down-bed technology, not only can the process be shortened, but also the raw mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02C07C11/24C10H19/00
Inventor 谢克昌田亚峻吕永康鲍卫仁王宝俊朱素渝
Owner TAIYUAN UNIV OF TECH