微反应器微观混合性能的数值模拟研究

石油炼制与化工 ›› 2025, Vol. 56 ›› Issue (4): 123-131.

微反应器微观混合性能的数值模拟研究

赵宏宇^1,2,唐晓津¹,王彧斐²

1. 中石化石油化工科学研究院有限公司
2. 中国石油大学（北京）

收稿日期:2024-10-29 修回日期:2024-12-09 出版日期:2025-04-12 发布日期:2025-04-02
通讯作者: 唐晓津 E-mail:tangxj.ripp@sinopec.com
基金资助:
国家自然科学基金

NUMERICAL SIMULATION ON MICROMIXING EFFICIENCY IN MICROREACTORS

Received:2024-10-29 Revised:2024-12-09 Online:2025-04-12 Published:2025-04-02

摘要/Abstract

摘要： 为分析微反应器微观混合过程中的内部信息，采用计算流体力学（CFD）方法，选用层流-有限速率模型对T形圆管、T形方管和Y形方管微反应器的微观混合过程进行了数值模拟，模拟结果与文献中的试验数据基本吻合，说明所选用CFD模型的准确性和可靠性良好。分析了Villermaux-Dushman反应体系中流体在上述3种微反应器中的流动状态和速度分布、H⁺和I₂分布情况及其离集指数（X_S）的分布规律，从而评估微反应器的微观混合性能。结果表明：3种微反应器中的流体流动均为层流态；在T形圆管微反应器中，H⁺被快速完全消耗；在T形方管和Y形方管微反应器中，H⁺始终存在；3种微反应器的X_S均较小，表现出优良的微观混合性能。

关键词: 计算流体力学, 微反应器, Villermaux-Dushman反应, 微观混合性能, 离集指数

Abstract: To analyze the internal information in microreactors, numerical simulations of the micromixing process in a T-type round tube, a T-type square tube, and a square Y-type microreactors were carried out using computational fluid dynamics (CFD) methods. The results simulated by Laminar-Finite-Rate model were consistent with the experimental data reported in the literature, which demonstrated the accuracy and reliability of the chosen CFD model. The flow field, velocity distribution, distributions of H⁺ and I₂, and the distribution of the segregation index X_S of each microreactor in the Villermaux-Dushman reaction system were analyzed, which provided a reference for the evaluation of the micromixing efficiency in microreactors. The results showed that the flow of fluids in all three microreactors was laminar, and H⁺ was quickly and completely consumed in the T-type round tube microreactor, whereas it was always present in the T-type square tube and Y-type square tube microreactors. The segregation index X_S was small in all three microreactors, which showed excellent micromixing efficiency.

Key words: computational fluid dynamics, microreactor, Villermaux-Dushman reaction, micromixing efficiency, segregation index

赵宏宇唐晓津王彧斐. 微反应器微观混合性能的数值模拟研究[J]. 石油炼制与化工, 2025, 56(4): 123-131.

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