研究目的
Investigating the use of additive manufacturing (AM) to produce fluid guiding elements (FGE) for enhanced gas?liquid mass transfer in CO2 absorption processes.
研究成果
The FGE structures show enhanced gas?liquid mass transfer in CO2 absorption, with the absorption coefficient kl in the same range as reported for microstructured falling film devices. The study demonstrates the potential of using AM to produce innovative fluidic devices for process intensification.
研究不足
The surface of the FGEs is covered with partly melted particle residues, which could block the fluid passages. The study is limited to CO2 absorption in water and NaOH solution and does not explore other gas?liquid systems.
1：Experimental Design and Method Selection
The study utilized selective laser melting (SLM) to manufacture FGEs with precisely defined fluid passages for CO2 absorption processes. The FGEs were characterized and evaluated for CO2 absorption in water and NaOH solution.
2：Sample Selection and Data Sources
The FGEs were manufactured using 316L stainless steel powder. The absorption of CO2 into an aqueous solution of NaOH was chosen as a model system to characterize the mass transfer.
3：List of Experimental Equipment and Materials
ReaLizer SLM125 selective laser melting machine, 316L stainless steel powder, JSM-6300 SEM, Coriolis mass flow controller, EL-FLOW mass flow controller, Definer 220 flowmeter.
4：Experimental Procedures and Operational Workflow
The FGEs were printed using SLM, characterized by SEM, and tested for CO2 absorption in water and NaOH solution. The absorption efficiency was measured and the mass transfer coefficient kl was determined.
5：Data Analysis Methods
The absorption efficiency and mass transfer coefficient kl were calculated based on the measured CO2 absorption rates and the geometric contacting area of the FGEs.
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