| NUMERICAL SIMULATION OF SWIRLING FLOWS IN OXIDATION REACTORS FOR TiO2 MANUFACTURE |
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| 作者姓名： | Yi Cheng Aiwei Ye Fei Liu Fei Wei |
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| 作者单位： | Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P.R. China |
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| 基金项目： | 教育部全国优秀博士学位论文作者专项基金 |
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| 摘 要： | The oxidation reactor plays a key role in producing rutile titanium dioxide （TiO2） from vapor-phase titanium tetrachloride （TiCl4） by employing a swirling flow operation for enhanced gas mixing. This work aims to understand the effect of reactor configuration on the 3-D swirling flow field using computational fluid dynamics （CFD） simulation. Considering the anisotropic turbulence involved, the Reynolds stress model is applied to describe the complex swirling flow together with the cross-flow mixing of gases. The results show significant effect of the flow angle between the wall jet of air stream （representing TiCl4 in practice） and the axial direction on the initial flow field of cross-flow mixing, where 60° gives smooth profiles of axial velocity development while 90° may provide the fastest mixing between the jet and the axial bulk flow. The pipe shape for the reaction and developing zone, i.e., straight, expanding and shrinking, shows slight influence on the hydrodynamics.
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| 关 键 词： | 二氧化钛 氯化过程 氧化反应器 旋涡流 计算流体力学 CFD 雷诺兹应力模型 |
| 收稿时间： | 2005-09-29 |
| 修稿时间： | 2005-09-292006-01-17 |
NUMERICAL SIMULATION OF SWIRLING FLOWS IN OXIDATION REACTORS FOR TiO2 MANUFACTURE |
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| Yi Cheng Aiwei Ye Fei Liu Fei Wei.NUMERICAL SIMULATION OF SWIRLING FLOWS IN OXIDATION REACTORS FOR TiO2 MANUFACTURE[J].China Particuology,2006,4(3):108-113. |
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| Authors: | Yi Cheng Aiwei Ye Fei Liu Fei Wei |
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| Abstract: | |
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| Keywords: | titanium dioxide chloride process oxidation reactor swirling flow computational fluid dynamics (CFD) Reynolds stress model |
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