Pressure drop and flooding in rotating packed beds
Pressure drop and flooding in rotating packed beds
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DOI：
10.1016/j.cep.2020.107908
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发表时间：
2020-05-01
影响因子：
4.3
通讯作者：
Attidekou, Pierrot S.
中科院分区：
文献类型：
--
作者：
Hendry, James R.;Lee, Jonathan G. M.;Attidekou, Pierrot S.
旋转填料床（RPB）是一种强化的替代传统的吸收塔。RPB可以大大降低与反应性吸收过程相关的成本，例如燃烧后CO2捕获。本研究提出了内部径向压力分布实验获得的内部旋转填充床。这种方法允许比以前的研究更详细地研究个体对总体压降的贡献。实验考察了转速、气体流量和液体流量对旋转床压降的影响。结果表明，简单的一维压降贡献模型可以很好地描述压降。机匣压降部分是由于在RPB眼内形成的自由涡流，沿着入口和出口损失。这一结果提高了对气体压降的理解，以及这些因素如何影响全尺寸RPB的性能和设计。
Rotating packed beds (RPB) are an intensified alternative to conventional absorption columns. RPBs could substantially reduce costs associated with reactive-absorption processes, such as post-combustion CO2 capture. This study presents internal radial pressure profiles obtained experimentally from inside a rotating packed bed. This approach allows the individual contributions to the overall pressure drop to be investigated in greater detail than previous studies. Experiments examined the effect of rotation speed, gas flow and liquid flow on pressure drop in RPBs. The result illustrated the pressure drop can be described well using a simple 1D pressure drop contribution model. The casing pressure drop is due in part to a free vortex that forms in the RPB eye, along with entrance and exit losses. This result improves understanding of gas pressure drop, and how these factors affect the performance and design of full-scale RPBs.