Speaker
Description
Up to now, carbon capture researches and commercialisation projects have been focused mostly on fossil fuel power stations and industrial plants that feature single CO2 emission sources of very large scales. To achieve the net zero emission target, however, it is essential to curtail substantially the CO2 emission from all the CO2 emission sources regardless of their scales including maritime shipping sector [1]. The amine capture units that are often chosen for decarbonising power plants may not be best suited for capturing CO2 from ships, the CO2 emissions of which are much smaller than those of power plants. It is well known that adsorption processes are competitive over other separation processes for industrial application of small to medium scales [2].
A PSA-SPUR system is an advanced adsorption process designed for recovering the heavy component from a gas mixture, not necessitating unrealistically low pressures for desorption. The novel adsorption process is capable of achieving the high CO2 purity and recovery targets at the same time, without having to operate the process within a very narrow window of operating conditions for good performance. In this study, the PSA-SPUR system was designed for its application for ship-based carbon capture and optimised for the best performance using the unique Equilibrium Theory model [3,4]. The theoretical results were validated by experimental campaign using the lab-scale six-column Pressure Swing Adsorption rig.
Acknowledgement
This work is supported by the EPSRC IAA fund and the Birse Trustees.
References
References
[1] IMO(MEPC72) RESOLUTION MEPC.304(72) Initial IMO Strategy on Reduction of GHG Emissions from Ships 2018.
[2] Ruthven, D.M., Principles of Adsorption and Adsorption Processes, Wiley, 1984.
[3] Chen, Y.; Ahn, H., Feasibility Study of Pressure Swing Adsorption (PSA) Processes for CO2 Capture and H2 Purification in Blue Hydrogen Processes and Hydrogen Deblending in the Gas Network. In 2022 AIChE Annual Meeting, Phoenix, Arizona, United States., 2022.
[4] Chen, Y.; Ahn, H., Optimization Strategy for Enhancing the Product Recovery of a Pressure Swing Adsorption through Pressure Equalization or Co-current Depressurization: A Case Study of Recovering Hydrogen from Methane. Industrial & Engineering Chemistry Research 2023, 62(12), 5286-5296.
| Keywords | CO2 capture, adsorption, gas separation, process design |
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