(45e) Post-Combustion CO2 Capture Using PAI Polymer/Silica/PEI Hollow Fiber Sorbents
- Conference: AIChE Annual Meeting
- Year: 2013
- Proceeding: 2013 AIChE Annual Meeting
- Group: Topical Conference: Advanced Fossil Energy Utilization
- Time: Monday, November 4, 2013 - 9:49am-10:07am
Post-combustion CO2 capture using PAI polymer/silica/PEI hollow fiber sorbents
Ying Labreche1, Yanfang Fang1, Fateme Rezaei1, Ryan P. Lively2, Christopher W. Jones1,*, William J. Koros1,*
1 Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, GA 30332-0100, USA
2 Algenol Biofuels, 28100 Bonita Grande Drive, Bonita Springs, Florida 34315, United States
Amine-loaded cellulose acetate (CA) polymer/silica hollow fiber sorbents for post-combustion CO2 recovery were created successfully by utilizing a post-spinning amine infusion technique . After initial work focusing on CA fibers [1-2], poly(amide-imide) (PAI), fibers were created, as this polymer is more thermally and mechanically stable than CA. Poly(ethyleneimine) (PEI) was infused into PAI/mesoporous silica hollow fiber sorbents during the solvent exchange steps after fiber spinning. After infusing the 50 wt% silica hollow fiber sorbents with 10% PEI solutions in methanol, the fiber sorbents were demonstrated to have an equilibrium CO2 uptake of ca. 1.1 mmol/g-fiber in TGA tests using dry, 10% CO2 simulated gas streams.
Several amine-loaded fibers were assembled into shell-and-tube modules and exposed on the shell side at 1 atm and 35 °C to simulated flue gas with an inert tracer (14 mol% CO2, 72 mol% N2 and 14 mol% He at 100% R.H.). The humid breakthrough CO2 capacity and the humid CO2 and “equilibrium” uptake at 1 atm and 35 °C were tested. The results indicate that the post-spinning infusion method provides a versatile platform for ultimate scale-up of practical amine sorbents for flue gas CO2 recovery applications.
Y. Labreche, R.P. Lively, F. Rezaei, G. Chen, C.W. Jones, W.J. Koros, Post-spinning infusion of poly(ethyleneimine) into polymer/silica hollow fiber sorbents for carbon dioxide capture Chem. Eng. J., 219 (2013) 166-175
 F. Rezaei, R. Lively, Y. Labreche, G. Chen, Y. Fan, W.J. Koros, C.W. Jones, Aminosilane-grafted polymer/silica hollow fiber adsorbents for CO2 capture from flue gas, ACS Appl. Mater. Interfaces, 5 (2013) 3921-3931