关键词: 碳纳米管, 半连续反应器, 计算流体力学, 模拟, 开发设计

Abstract: Semi-continuous pilot test fluidized bed reactor for carbon nanotubes preparation was designed and fabricated，base on experiments of batch fluidized bed reactor and repeated calculations. When reaction temperature is 650 ℃，reaction time is 4 h，velocity of CH₄，H₂，N₂ are 0.1m/s，0.008 m/s，0.016 m/s，the yield of carbon nanotubes is 177.5 g/h，conversion of CH₄ is 23.2%，production cycle is shortened by 2/3. The fluidization behavior of gas-solid fluidization process was calculated by using the computational fluid dynamics （CFD） package Fluent6.1. And the optimal condition for carbon nanotubes is that the velocity of CH₄ is 0.1m/s，and catalyst is 100g.

Key words: carbon nanotubes, semi-comtions reactor, computational fluid dynamics, simulations, development and design