Hybrid Membrane/Absorption Process for Post-Combustion CO2 Capture
Project No.: DE-FE0004787
Gas Technology Institute is partnering with PoroGen Corporation and Aker Process Systems in a three-year effort to develop a hybrid technology for CO2 capture from flue gases based on a combination of solvent absorption and hollow fiber membrane technologies. The technology could also apply to removal of numerous other gas pollutants such as NOx and SOx, separation of CO2 from hydrogen in refinery streams, and separation of CO2 from natural gas (natural gas sweetening). The technology increases interfacial gas/liquid area by a factor of ten over conventional packed or tray columns, thus increasing mass transfer. The selectivity is controlled by the chemical affinity of CO2 with a hindered amine. The process results in lower steam regeneration energy, and the CO2 is generated at pressure, reducing compression costs. The project includes bench-scale testing on a 25 kWe-equivalent slipstream at Midwest Generation’s Joliet Power Station.
Schematic of the proposed GTI hybrid absorption/membrane process
Related Papers and Publications:
Presented by S. James Zhou, Gas Technology Institute, 2012 NETL CO2 Capture Technology Meeting, Pittsburgh, PA
Presented by Shiguang Li, Gas Technology Institute, 2011 NETL CO2 Capture Technology Meeting, Pittsburgh, PA
- Hybrid Membrane/Absorption Process for Post-Combustion CO2 Capture Fact Sheet [PDF-303KB] (Feb 2011)
Presented by Gas Technology Institute, 2010 Annual NETL CO2 Capture Technology R&D Meeting, Pittsburgh, PA
CO2 Capture Technology Status Sheet
- For further information on this project, contact the NETL Project Manager, José D. Figueroa.