Abstract
Hollow fiber membrane contactors (HFMCs) can effectively separate CO from post-combustion flue gas by providing a high contact surface area between the flue gas and a liquid solvent. Accurate models of carbon capture HFMCs are necessary to understand the underlying transport processes and optimize HFMC designs. There are various methods for modeling HFMCs in 1D, 2D, or 3D. These methods include (but are not limited to): resistance-in-series, solution-diffusion, pore flow, Happel’s free surface model, and porous media modeling. This review paper discusses the state-of-the-art methods for modeling carbon capture HFMCs in 1D, 2D, and 3D. State-of-the-art 1D, 2D, and 3D carbon capture HFMC models are then compared in depth, based on their underlying assumptions. Numerical methods are also discussed, along with modeling to scale up HFMCs from the lab scale to the commercial scale.
Highlights
In 2018, the Intergovernmental Panel on Climate Change issued a report detailing the irreversible impact of a global temperature rise of 1.5 ◦ C [1]
A common geometric configuration used in post-combustion carbon capture (PCC) is the hollow fiber membrane contactor (HFMC), and this particular design will be the focus of this review paper
This paper offers a comprehensive review of modeling studies to date for gas-liquid HFMCs for PCC
Summary
In 2018, the Intergovernmental Panel on Climate Change issued a report detailing the irreversible impact of a global temperature rise of 1.5 ◦ C [1]. Energy is required to strip CO2 from the solvent in a regeneration process, gas-liquid membrane contactors have several competitive advantages over other membrane configurations: no need to pressurize the flue gas (which requires a lot of energy), higher CO2 fluxes, no selective layer, and independent flow regulation [8]. Gas-liquid membrane contactors used in post-combustion carbon capture (PCC) are the focus of this review paper. A common geometric configuration used in PCC is the hollow fiber membrane contactor (HFMC), and this particular design will be the focus of this review paper. Experiments conducted in this field are often tailored to a unique set of membrane materials and operating conditions This makes it challenging to compare reported experimental results or determine the optimal membrane contactor design. Numerical approaches and modeling to assist scaling up HFMC technology are discussed
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