The numerical simulation of a new double swirl static mixer for gas reactants mixing

Zhuokai Zhuang; Jingtian Yan; Chenglang Sun; Haiqiang Wang; Yuejun Wang; Zhongbiao Wu

doi:10.1016/j.cjche.2020.05.008

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The numerical simulation of a new double swirl static mixer for gas reactants mixing

Energy, Resources and Environmental Technology | Updated：2026-01-06

- The numerical simulation of a new double swirl static mixer for gas reactants mixing
- The numerical simulation of a new double swirl static mixer for gas reactants mixing
- 中国化学工程学报（英文版） 2020年28卷第9期页码：2438-2446
- Affiliations：
  
  1. Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental & Resources Science, Zhejiang University,Hangzhou,China,310058
  2. Zhejiang Provincial Engineering Research Centre of Industrial Boiler & Furnace Flue Gas Pollution Control,Hangzhou,China,310058
  3. College of Control Science and Engineering, Zhejiang University,Hangzhou,China,310027
  4. Zhejiang Tianlan Environmental Protection Technology Co. Ltd,Hangzhou,China,311202
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.05.008
  中图分类号：
- 纸质出版：2020
- Accepted：
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Zhuokai Zhuang, Jingtian Yan, Chenglang Sun, 等. The numerical simulation of a new double swirl static mixer for gas reactants mixing[J]. 中国化学工程学报（英文版）, 2020,28(9):2438-2446.

Zhuokai Zhuang, Jingtian Yan, Chenglang Sun, Haiqiang Wang, Yuejun Wang, Zhongbiao Wu. The numerical simulation of a new double swirl static mixer for gas reactants mixing[J]. Chinese Journal of Chemical Engineering, 2020, 28(9): 2438-2446.
Zhuokai Zhuang, Jingtian Yan, Chenglang Sun, 等. The numerical simulation of a new double swirl static mixer for gas reactants mixing[J]. 中国化学工程学报（英文版）, 2020,28(9):2438-2446. DOI： 10.1016/j.cjche.2020.05.008.

Zhuokai Zhuang, Jingtian Yan, Chenglang Sun, Haiqiang Wang, Yuejun Wang, Zhongbiao Wu. The numerical simulation of a new double swirl static mixer for gas reactants mixing[J]. Chinese Journal of Chemical Engineering, 2020, 28(9): 2438-2446. DOI： 10.1016/j.cjche.2020.05.008.

摘要

Abstract

For the nitrogen oxide removal processes

high performance gas mixer is deeply needed for the injection of NH

or O

. In this study

a new type of double swirl static mixer in gas mixing was investigated using computational fluid dynamics (CFD). The results obtained using Particle Image Velocimetry (PIV) correlated well with the results obtained from simulation. The comparisons in pressure loss between the experimental results and the simulation results showed that the model was suitable and accurate for the simulation of the static mixer. Optimal process conditions and design were investigated. When L/D equaled 4

coefficient of variation (COV) was 5%. The inlet velocity did not affect the distributions of turbulent kinetic energy. In terms of both COV and pressure loss

the inner connector is important in the design of the static mixer. The nozzle length should be set at 4 cm. Taking both COV and pressure loss into consideration

the optimal oblique degree is 45°. The averaged kinetic energy changed according to process conditions and design. The new static mixer resulted in improved mixing performance in a more compact design. The new static mixer is more

energy efficient compared with other SV static mixers. Therefore

the double swirl static mixer is promising in gas mixing.

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