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Research on operation parameters and properties of flue gas on adsorption of As2O3 by γ-Al2O3: An experiment and simulation study
Process Safety and Environmental Protection ( IF 6.9 ) Pub Date : 2021-05-28 , DOI: 10.1016/j.psep.2021.05.034
Pengbo Hu , Shujuan Wang , Yuqun Zhuo

How operation parameters (e.g. flow speed of flue gas and temperature) and flue gas properties (e.g. contents of SO2, NOx etc.) affect As2O3 adsorption by γ-Al2O3 under the condition of selective catalytic reduction (SCR) is the key to protecting catalyst from poisoning and preventing it being emitted into environments. The patterns of mentioned influence factors affecting adsorption of As2O3 have been investigated via experimental studies combined with molecular dynamics (MD) simulation calculations. According to the results of experiments and MD simulation, within the selected specific range of flue gas flow speed, As2O3 could be adsorbed effectively. In the meantime, with higher temperature, the thermal vibration of As2O3 molecule gets more intense and compromises the adsorption. Also, different flue gas contents affect As2O3 adsorption in different chemical and physical means. This research could provide valuable information for power plants and subsequent studies in related area.



中文翻译:

γ-Al 2 O 3吸附As 2 O 3烟气运行参数及性能研究:实验与模拟研究

在选择性催化还原条件下,操作参数(如烟气流速和温度)和烟气性质(如SO 2、NO x含量等)如何影响γ-Al 2 O 3对As 2 O 3 的吸附( SCR) 是防止催化剂中毒并防止其排放到环境中的关键。已经通过实验研究结合分子动力学 (MD) 模拟计算研究了影响 As 2 O 3吸附的上述影响因素的模式。根据实验和MD模拟结果,在选定的特定烟气流速范围内,As2 O 3能被有效吸附。同时,随着温度的升高,As 2 O 3分子的热振动变得更加强烈并损害吸附。此外,不同的烟气含量以不同的化学和物理方式影响As 2 O 3吸附。该研究可为电厂及相关领域的后续研究提供有价值的信息。

更新日期:2021-06-09
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