Application of laser induced fluorescence technology in mixing effect analysis of oxidation furnace at titanium dioxide via chloride process

Sun Hongtao; Ni Xiaomin; Wang Yue; Xie Weiqing; Yang Guoqiang

doi:10.7513/j.issn.1004-7638.2021.05.014

Volume 42 Issue 5

Oct. 2021

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Sun Hongtao, Ni Xiaomin, Wang Yue, Xie Weiqing, Yang Guoqiang. Application of laser induced fluorescence technology in mixing effect analysis of oxidation furnace at titanium dioxide via chloride process[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 84-91. doi: 10.7513/j.issn.1004-7638.2021.05.014

Citation:

Sun Hongtao, Ni Xiaomin, Wang Yue, Xie Weiqing, Yang Guoqiang. Application of laser induced fluorescence technology in mixing effect analysis of oxidation furnace at titanium dioxide via chloride process[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 84-91. doi: 10.7513/j.issn.1004-7638.2021.05.014

Citation:

Sun Hongtao, Ni Xiaomin, Wang Yue, Xie Weiqing, Yang Guoqiang. Application of laser induced fluorescence technology in mixing effect analysis of oxidation furnace at titanium dioxide via chloride process[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 84-91. doi: 10.7513/j.issn.1004-7638.2021.05.014

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Application of laser induced fluorescence technology in mixing effect analysis of oxidation furnace at titanium dioxide via chloride process

doi: 10.7513/j.issn.1004-7638.2021.05.014

1.
East China Engineering Science and Technology Co., Ltd. , Hefei 230024, Anhui, China
2.
State Key Laboratory of Fire Science,University of Science and Technology of China, Hefei 230027,Anhui,China

Received Date: 2021-06-06
Publish Date: 2021-10-30

Abstract

Abstract

Titanium dioxide (TiO₂) through chloride process is the mainstream production technology of titanium dioxide industry in the world nowadays, and the structure design of oxidation reactor is a key technology for the production of titanium dioxide by chlorination. The mixture of TiCl₄ and O₂ plays a decisive role in the properties of TiO₂, such as particle size, distribution and crystal shape, and then affects the quality of the product. Therefore, it is of great significance to monitor the mixing effect of two kinds of material airflow under different working conditions for the design of oxidation reactor and the optimization of practical operation parameters. However, the existing research shows that the traditional measurement technology is difficult to adapt to the characteristics of high speed and instability of complex flow field, so the modern diagnosis technology with high precision is urgently needed. Herein, using the undisturbed non-contact laser induced fluorescence (LIF) the gas concentration distribution in different location of the reactor was measured by simulation under different working condition. The mixing effect and its variation law of the two gases in different oxidation furnace structure and different materials were studied, and the key factors influencing the mixing effect were found out. This study provides necessary reference for the structure design of the oxidation furnace and the control of the operation process conditions, as well as important experimental parameters for the relevant theoretical model and numerical simulation. It shows important scientific and practical significance to promote the development of TiO₂ production process in China.
- titanium dioxide,
- chlorination method,
- oxidation reactor,
- air mixing,
- laser induced fluorescence (LIF)

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References(10)

References

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