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Geometry effect on membrane absorption for CO2 capture. Part I: A hybrid modeling approach.
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  • Kaiyun Fu,
  • Sunyang Wang,
  • Zhenbin Gu,
  • Yushu Liu,
  • Tianming Zai,
  • Shijie Li,
  • Xianfu Chen,
  • Minghui Qiu,
  • Yiqun Fan
Kaiyun Fu
Nanjing Tech University
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Sunyang Wang
Nanjing Tech University
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Zhenbin Gu
Nanjing Tech University
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Yushu Liu
Nanjing Tech University
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Tianming Zai
Nanjing Tech University
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Shijie Li
Nanjing Tech University
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Xianfu Chen
Nanjing Tech University
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Minghui Qiu
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Yiqun Fan
Nanjing Tech University
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Abstract

Membrane absorption (MA) has a great prospect for CO2 capture. In MA modeling, conventional 1D- and 2D- models make simplification of membrane contactor (MC) geometry. Geometry simplification allows an easy process modeling and numerical solution, however, is only reasonable for particular MCs. Here, efforts are underway to quantify the geometry effect on the MA-CO2 performance. First, we proposed a full 3D model without geometry simplification for simulating the MA-CO2 process in real MCs and then validated it with experimental data. More importantly, we highlighted a preferable hybrid model in which a correction factor (F) was introduced to the 2D simulation results to make their combination approximately equal to the 3D simulation values. The F was correlated with dimensionless parameters obtained from computational fluid dynamics (CFD) studies for characterizing the geometry effect. Such hybrid modeling contributes to characterizing the influence of geometry on the MA-CO2 performance and improving computation accuracy-efficiency combinations.

Peer review status:IN REVISION

09 Nov 2020Submitted to AIChE Journal
10 Nov 2020Assigned to Editor
10 Nov 2020Submission Checks Completed
23 Nov 2020Reviewer(s) Assigned
19 May 2021Editorial Decision: Revise Major