Advanced Textile Technology ›› 2022, Vol. 30 ›› Issue (2): 99-105.DOI: 10.19398/j.att.202104032

• Materials Engineering • Previous Articles     Next Articles

Simulation of gas flow field in reactor for preparation of carbon nanotube fibers by chemical vapor deposition

ZHOU Zihao, WU Lili, CHEN Ting()   

  1. College of Textile and Clothing Engineering, Soochow University, Suzhou 215021, China
  • Received:2021-04-16 Online:2022-03-10 Published:2021-07-08
  • Contact: CHEN Ting

气相沉积法制备碳纳米管纤维反应器气体流场模拟

周梓豪, 吴丽莉, 陈廷()   

  1. 苏州大学纺织与服装工程学院,江苏苏州 215021
  • 通讯作者: 陈廷
  • 作者简介:周梓豪(1996-),男,江苏苏州人,硕士研究生,主要从事产业用纤维制品制备方面的研究。
  • 基金资助:
    国家自然科学基金项目(51303121);南通市基础科学研究项目(JC2019008)

Abstract:

In order to investigate the gas flow field in the vertical vapor deposition reactor for preparing carbon nanotube fibers, the fluid dynamics software Gambit and Fluent were used to model and simulate the gas flow field in the vertical vapor deposition reactor numerically. The distributions of gas velocity, temperature and concentration inside the reactor were obtained through simulation. The results show that gas velocity reaches a peak of 1.79 m/s when it is ejected from the inlet pipe. In the process of heating, the velocity gradually stabilizes at 0.02 m/s. The temperature gradually approaches the temperature of reactor wall at 1500K. The carbon source methane gas presents a Poiseuille distribution during the heating of reactor. During the heating of vertical vapor deposition reactor, the gas flow field presents low-speed and steady high temperature, which is a favorable environment and major area for the synthesis of carbon nanotubes and formation of carbon nanotube fibers.

Key words: carbon nanotube fiber, chemical vapor deposition, gas flow field, numerical simulation

摘要:

为了探讨制备碳纳米管纤维的直立式气相沉积反应器气体流场,选用计算流体力学软件Gambit和Fluent分别对直立式气相沉积反应器气体流场进行建模和数值模拟,模拟得到反应器内部气体速度、温度和浓度分布。结果表明:气体从进气管口射出时速度达到峰值1.79 m/s;在加热段时速度逐渐趋向于稳定,为0.02 m/s,温度逐渐趋向于反应器管壁温度(1500K);碳源甲烷气体在反应器加热段呈现泊肃叶分布。直立式气相沉积反应器加热段气体流场呈现低速平缓高温,是适宜碳纳米管合成和碳纳米管纤维形成的有利环境和主要区域。

关键词: 碳纳米管纤维, 化学气相沉积, 气体流场, 数值模拟

CLC Number: