期刊
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
卷 178, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cep.2022.109034
关键词
Mixing efficiency; Pressure drop; Millimeter scale mixer; T-Junction; Numerical simulation
资金
- National Key R & D Program of China [2021YFC2101900, 2019YFA0905000]
- National Natural Science Foundation of China [21908094, 21776130, 22078150]
- Nanjing International Joint Research and Development Project [202002037]
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions
By reducing the scale and optimizing the hole structure, the mixing efficiency of millimeter scale mixers can be improved, accompanied by reduced energy consumption and pressure drop.
Due to the scale effects, reducing the scale of the channel is conducive to improve the mixing efficiency of the fluid in the T-junction mixer. However, directly reducing the scale to improve the mixing efficiency is accom-panied by the sharp increase of pressure drop, resulting in a high energy consumption. The hole structures are proposed and compared to enhance the mixing performance and reduce the pressure drop of millimeter scale mixer. The SHS can enhance the mixing efficiency and mixing cost index of 10 mm T-junction mixer to a level comparable to the 1 mm mixer. The optimal E-90A can enhance the mixing efficiency of 10 mm T-junction mixer to a level comparable to the 0.5 mm mixer, and reduce the mixing cost index to 1.4% of the 0.5 mm mixer. The experimental and simulation results indicate that the optimal EAHS structure achieves a high mixing perfor-mance and a low pressure drop. All the findings reported provide useful references for intensification of mixing efficiency and reduction of pressure drop in a millimeter scale mixer.
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