Abstract Industrial denitrification catalyst monoliths are regularly tested in controlled lab-scale conditions to quantify their activity. As mass transfer phenomena occurring inside the channels of the monoliths have an important impact on the global denitrification kinetics, activity measurements must be conducted in well-known conditions in terms of sample geometry and gaseous flow regimes, among others. The lack of accurate mass transfer correlations for the complex flows at stake however prevents any accurate generalisation of the test results. In this paper, we propose a semi-empirical method for the quantification of contribution of mass transfer to the global denitrification kinetics for any given test bench. It is based on the experimental adjustment of mass transfer correlations presenting a suitable form. Mass transfer can therefore be decoupled from the intrinsic kinetics and large ranges of conditions can be covered by conducting a limited number of measurements.

中文翻译：

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一种量化传质对实验室规模 SCR 脱硝催化剂活性测试影响的半经验方法

摘要 工业反硝化催化剂整料定期在受控的实验室规模条件下进行测试，以量化其活性。由于发生在整体通道内的传质现象对整体反硝化动力学具有重要影响，因此必须在样品几何形状和气体流动状态等众所周知的条件下进行活性测量。然而，由于复杂流的缺乏准确的传质相关性，这阻碍了测试结果的任何准确概括。在本文中，我们提出了一种半经验方法，用于量化传质对任何给定试验台的整体反硝化动力学的贡献。它基于呈现合适形式的传质相关性的实验调整。