张建文,田小花,况春江

• 1:北京化工大学流体力学与传热研究室
• 2:中国钢铁研究总院

摘要(Abstract)：

针对Villermaux/Dushman反应体系,研究套管式微反应器内错流流动与反应传质过程。采用雷诺平均湍流传递方程描述流体区的传递过程,由达西模型确定丝网区的流动阻力。研究获得反应器内组分分布、有效扩散速率分布以及流体在丝网内的停留时间分布特征,发现在套管式微反应器内存在两个决定组分在丝网区浓度扩散分布规律的关键因素,丝网内流体停留时间分布和环隙内错流流动效应。相同进料比下,随着总雷诺数的增大,离集指数在整体呈下降的趋势下存在一转折点,雷诺数较小时组分扩散受分子扩散和湍流扩散控制,停留时间较长,副产物生成较多,离集指数受雷诺数的影响较大;当总雷诺数大于491后,错流流动起主要作用,组分扩散主要受湍流扩散控制,停留时间小于0.02 s,副产物生成较少,离集指数基本不随雷诺数变化。

关键词(KeyWords)： 微反应器;传递过程;多孔介质;Villermaux/Dushman反应;离集指数

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(205760007)

作者(Author): 张建文,田小花,况春江

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