TY - GEN
T1 - Modeling, Design, and Testing of a Novel Biphasic Solvent-Enabled Absorption System for Post-Combustion Carbon Capture
AU - Nielsen, Paul
AU - Salih, Hafiz
AU - Lu, Hong
AU - Ye, Qing
AU - O'Brien, Kevin
AU - Brownstein, Stephanie
AU - Attalla, Mohamed
AU - Lu, Yongqi
N1 - The authors would like to acknowledge support from the United States Department of Energy/National Energy Technology Laboratory under Award Numbers DE-FE0026434 and DE-FE0031600. The authors would also like to acknowledge support and assistance from Trimeric Corporation for engineering consulting and ITG Henneman for engineering design and controls programming. The authors are thankful to AspenTech for providing a license for the Aspen Plus® software. This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.
PY - 2021
Y1 - 2021
N2 - A novel absorption process enabled by a new class of biphasic solvents for post-combustion carbon capture (BiCAP) is presently being developed at the University of Illinois at Urbana-Champaign. The new biphasic solvents are water-lean solvent blends that develop dual liquid phases with the absorbed CO2 highly enriched in one of the phases. These solvents are superior in CO2 capacity and have high thermal and oxidative stability compared to MEA. The BiCAP technology features a unique process configuration of multi-stage CO2 absorption and liquid-liquid phase separation during CO2 absorption, allowing continual separation and removal of the CO2-enriched liquid phase for maintaining low solvent viscosity and a fast absorption rate. A 40 kWe-scale skid has recently been constructed at the Abbott Power Plant in Champaign, IL, to test the BiCAP solvent in continuous operation with a slipstream of real post-combustion flue gas. Along with improvements in the stripping configuration including cold feed bypass, the process is expected to achieve a minimum reboiler duty of 2,210 kJ/kg CO2 captured at a stripper operating pressure of 6 bar.
AB - A novel absorption process enabled by a new class of biphasic solvents for post-combustion carbon capture (BiCAP) is presently being developed at the University of Illinois at Urbana-Champaign. The new biphasic solvents are water-lean solvent blends that develop dual liquid phases with the absorbed CO2 highly enriched in one of the phases. These solvents are superior in CO2 capacity and have high thermal and oxidative stability compared to MEA. The BiCAP technology features a unique process configuration of multi-stage CO2 absorption and liquid-liquid phase separation during CO2 absorption, allowing continual separation and removal of the CO2-enriched liquid phase for maintaining low solvent viscosity and a fast absorption rate. A 40 kWe-scale skid has recently been constructed at the Abbott Power Plant in Champaign, IL, to test the BiCAP solvent in continuous operation with a slipstream of real post-combustion flue gas. Along with improvements in the stripping configuration including cold feed bypass, the process is expected to achieve a minimum reboiler duty of 2,210 kJ/kg CO2 captured at a stripper operating pressure of 6 bar.
KW - Aspen Plus
KW - CO2 capture
KW - absorption
KW - amine scrubbing
KW - biphasic solvent
KW - desorption
KW - phase transition
KW - Carbon capture
UR - https://www.scopus.com/pages/publications/85181398169
UR - https://www.scopus.com/pages/publications/85181398169#tab=citedBy
U2 - 10.2139/ssrn.3812737
DO - 10.2139/ssrn.3812737
M3 - Conference contribution
BT - Proceedings of the 15th Greenhouse Gas Control Technologies Conference
T2 - 15th Greenhouse Gas Control Technologies Conference, GHGT 2021
Y2 - 15 March 2021 through 18 March 2021
ER -