Ying Labreche1, Ryan P. Lively2, Fateme Rezaei1, Grace Chen1, David S. Sholl1, 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 hollow fiber sorbents for post-combustion CO2recovery were created by utilizing a novel post-spinning infusion technique. This technique infused poly(ethyleneimine) (PEI) into cellulose acetate/mesoporous silica hollow fiber sorbents during the solvent exchange after spinning. A suitable post-spinning infusing solution was found to be 10% PEI in methanol with an infusion time of 4 h.
After amine infusion, the 51 wt% silica hollow fiber sorbents were found to have a nitrogen loading of 0.52 mmol/g-fiber and a CO2 uptake of 1.2 mmol/g-fiber at equilibrium. The amine-loaded fibers were formed into a shell-and-tube module and exposed on the shell side at 1 atm and 35 °C to simulated flue gas with an inert tracer (10 mol% CO2, 80 mol% N2 and 10 mol% He at 100% R.H.). The fibers were found to have a breakthrough CO2 capacity of 0.58 mmol/g-fiber, with a mass transfer propagation front velocity of 1.12 cm/s. The CO2 “equilibrium” uptake at 1 atm and 35 °C is 0.92 mmol/g-fiber. The sorption enthalpy release was monitored and the thermal front propagation velocity was 0.75 cm/s. Finally, the water uptake was found to be 3.2 mmol/g-fiber. The results indicate the post-spinning infusion method provides a new platform for ultimate scale-up of practical fiber sorbents for flue gas application.
Would you like to access this content?
No problem. You just have to complete the following steps.
You have completed 0 of 2 steps.
You must be logged in to view this content. Log in now.
Purchase Technical Presentation
You must purchase this technical presentation using one of the options below.
If you already purchased this content recently, please click here to refresh the system's record of ownerships.
|Credits||0.5 Use credits|
|List Price||$25.00 Buy now|
|AIChE Members||$15.00 Buy now|
|AIChE Fuels and Petrochemicals Division Members||Free Free access|
|AIChE Undergraduate Student Members||Free Free access|
|AIChE Graduate Student Members||Free Free access|