Numerical simulation of circulating fluidization roasting desulfurization of high-sulfur bauxite based on computational particle fluid dynamics method

doi:10.1016/j.cjche.2025.01.007

Chinese Journal of Chemical Engineering ›› 2025, Vol. 82 ›› Issue (6): 138-152.DOI: 10.1016/j.cjche.2025.01.007

Numerical simulation of circulating fluidization roasting desulfurization of high-sulfur bauxite based on computational particle fluid dynamics method

Langfeng Fan^1,2, Chengming Xie^1,2, Qijin Wei³, Hongliang Zhao^1,2, Rongbin Li^1,2, Yongmin Zhang⁴, Fengqin Liu^1,2, Hong Yong Sohn⁵

1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. BGRIMM Technology Group, Beijing 100160, China;
4. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China;
5. Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT 84112, USA

Received:2024-11-15 Revised:2025-01-18 Accepted:2025-01-20 Online:2025-03-08 Published:2025-08-19
Contact: Hongliang Zhao,E-mail:zhaohl@ustb.edu.cn
Supported by:
This study was supported by the National Key Research and Development Program of China (2022YFC2904400) and Guangxi Science and Technology Major Project (GuiKe AA23023033).

Numerical simulation of circulating fluidization roasting desulfurization of high-sulfur bauxite based on computational particle fluid dynamics method

Langfeng Fan^1,2, Chengming Xie^1,2, Qijin Wei³, Hongliang Zhao^1,2, Rongbin Li^1,2, Yongmin Zhang⁴, Fengqin Liu^1,2, Hong Yong Sohn⁵

1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. BGRIMM Technology Group, Beijing 100160, China;
4. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China;
5. Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT 84112, USA

通讯作者: Hongliang Zhao,E-mail:zhaohl@ustb.edu.cn
基金资助:
This study was supported by the National Key Research and Development Program of China (2022YFC2904400) and Guangxi Science and Technology Major Project (GuiKe AA23023033).

Abstract

Abstract: As a pyrometallurgical process, circulating fluidized bed (CFB) roasting has good potential for application in desulfurization of high-sulfur bauxite. The gas-solid distribution and reaction during CFB roasting of high-sulfur bauxite were simulated using the computational particle fluid dynamics (CPFD) method. The effect of primary air flow velocity on particle velocity, particle volume distribution, furnace temperature distribution and pressure distribution were investigated. Under the condition of the same total flow of natural gas, the impact of the number of inlets on the desulfurization efficiency, atmosphere mass fraction distribution and temperature distribution in the furnace was further investigated.

Key words: Fluidization, Circulating fluidized bed, Numerical simulation, CPFD method, Roasting desulfurization, Bauxite

摘要： As a pyrometallurgical process, circulating fluidized bed (CFB) roasting has good potential for application in desulfurization of high-sulfur bauxite. The gas-solid distribution and reaction during CFB roasting of high-sulfur bauxite were simulated using the computational particle fluid dynamics (CPFD) method. The effect of primary air flow velocity on particle velocity, particle volume distribution, furnace temperature distribution and pressure distribution were investigated. Under the condition of the same total flow of natural gas, the impact of the number of inlets on the desulfurization efficiency, atmosphere mass fraction distribution and temperature distribution in the furnace was further investigated.

关键词: Fluidization, Circulating fluidized bed, Numerical simulation, CPFD method, Roasting desulfurization, Bauxite

Langfeng Fan, Chengming Xie, Qijin Wei, Hongliang Zhao, Rongbin Li, Yongmin Zhang, Fengqin Liu, Hong Yong Sohn. Numerical simulation of circulating fluidization roasting desulfurization of high-sulfur bauxite based on computational particle fluid dynamics method[J]. Chinese Journal of Chemical Engineering, 2025, 82(6): 138-152.

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Numerical simulation of circulating fluidization roasting desulfurization of high-sulfur bauxite based on computational particle fluid dynamics method

Numerical simulation of circulating fluidization roasting desulfurization of high-sulfur bauxite based on computational particle fluid dynamics method

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