The formation of accretion layers within the waste heat boiler is a serious operational concern as it can potentially increase boiler downtime and, hence, limit continuous production. In previous Computational Fluid Dynamics studies, the accretion formation was predicted for an industrial-scale waste heat boiler, using a dust stickiness sub-routine of the model. In this study, a dust sampling campaign was used to validate this stickiness sub-routine. Furthermore, various sticking and reaction mechanisms of flue dust were investigated and compared to thermodynamic predictions. While the results suggest that the sub-routine is valid, the comparison of thermodynamics and species in the samples showed that the chemical reactions of the flue dust did not reach the thermodynamic equilibrium.

Graphical Abstract

中文翻译：

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铜闪速熔炼炉余热锅炉中的烟尘反应和粘附机制：抽样研究

余热锅炉内堆积层的形成是一个严重的操作问题，因为它可能会增加锅炉停机时间，从而限制连续生产。在之前的计算流体动力学研究中，使用模型的粉尘粘性子程序预测了工业规模废热锅炉的吸积形成。在这项研究中，使用灰尘采样活动来验证此粘性子程序。此外，研究了烟尘的各种粘附和反应机制，并将其与热力学预测进行了比较。虽然结果表明子程序是有效的，但样品中热力学和物种的比较表明，烟尘的化学反应没有达到热力学平衡。

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