Attempting to Break the 2 GJ/tonne CO2 Barrier; Development of an Advanced Water-Lean Capture Solvent From Molecules to Detailed Process Design

6 Pages Posted: 29 Apr 2019

See all articles by Yuan Jiang

Yuan Jiang

Government of the United States of America - Pacific Northwest National Laboratory

Paul M. Mathias

affiliation not provided to SSRN

Greg Whyatt

Government of the United States of America - Pacific Northwest National Laboratory

Charles Freeman

Government of the United States of America - Pacific Northwest National Laboratory

Feng Zheng

Government of the United States of America - Pacific Northwest National Laboratory

Vassiliki-Alexandra Glezakou

Government of the United States of America - Pacific Northwest National Laboratory

Roger Rousseau

Government of the United States of America - Pacific Northwest National Laboratory

Philip K. Koech

Government of the United States of America - Pacific Northwest National Laboratory

Deepika Malhotra

Government of the United States of America - Pacific Northwest National Laboratory

David Heldebrant

Government of the United States of America - Pacific Northwest National Laboratory

Date Written: April 29, 2019

Abstract

Solvent-based post-combustion CO2 capture is an energy-intensive process primarily driven by the energy required to regenerate the CO2 capture solvent. Researchers are currently focused on developing drop-in solvent replacements for commercial amine solvents with lower regeneration energies. One approach to reducing the regeneration energy of a solvent is to reduce its water content, thereby reducing unnecessary condensing and consequent boiling in the process. There are a number of water-lean solvent formulations currently under development that allow for water contents below 10% by weight, versus more than 60% for commercial aqueous amines. One solvent class, CO2-Binding Organic Liquids (CO2BOLs), shows promise to reduce the parasitic load to a coal-fired power plant but has been impeded by high viscosities at high CO2 loadings. In this paper, we perform a preliminary modeling study of a new low-viscosity CO2BOL solvent and assess the energetics of different process stripper configurations. By tailoring the process configuration with the unique aspects of the solvent reboiler duties below 2 GJ/tonne CO2 could be achievable. Further, this study suggests that there is no one-size-fits-all process optimum configuration for solvents, and therefore optimal configurations will be solvent specific.

Keywords: CO2BOL; water-lean solvent; CO2 capture; GHGT-14

Suggested Citation

Jiang, Yuan and Mathias, Paul M. and Whyatt, Greg and Freeman, Charles and Zheng, Feng and Glezakou, Vassiliki-Alexandra and Rousseau, Roger and Koech, Philip K. and Malhotra, Deepika and Heldebrant, David, Attempting to Break the 2 GJ/tonne CO2 Barrier; Development of an Advanced Water-Lean Capture Solvent From Molecules to Detailed Process Design (April 29, 2019). Available at SSRN: https://ssrn.com/abstract=3379731

Yuan Jiang

Government of the United States of America - Pacific Northwest National Laboratory

901 D Street
370 L'Enfant Promenade, S.W.
Washington, DC 20024-2115
United States

Paul M. Mathias

affiliation not provided to SSRN

Greg Whyatt

Government of the United States of America - Pacific Northwest National Laboratory

901 D Street
370 L'Enfant Promenade, S.W.
Washington, DC 20024-2115
United States

Charles Freeman

Government of the United States of America - Pacific Northwest National Laboratory

901 D Street
370 L'Enfant Promenade, S.W.
Washington, DC 20024-2115
United States

Feng Zheng

Government of the United States of America - Pacific Northwest National Laboratory

901 D Street
370 L'Enfant Promenade, S.W.
Washington, DC 20024-2115
United States

Vassiliki-Alexandra Glezakou

Government of the United States of America - Pacific Northwest National Laboratory

901 D Street
370 L'Enfant Promenade, S.W.
Washington, DC 20024-2115
United States

Roger Rousseau

Government of the United States of America - Pacific Northwest National Laboratory

901 D Street
370 L'Enfant Promenade, S.W.
Washington, DC 20024-2115
United States

Philip K. Koech

Government of the United States of America - Pacific Northwest National Laboratory

901 D Street
370 L'Enfant Promenade, S.W.
Washington, DC 20024-2115
United States

Deepika Malhotra

Government of the United States of America - Pacific Northwest National Laboratory

901 D Street
370 L'Enfant Promenade, S.W.
Washington, DC 20024-2115
United States

David Heldebrant (Contact Author)

Government of the United States of America - Pacific Northwest National Laboratory ( email )

901 D Street
370 L'Enfant Promenade, S.W.
Washington, DC 20024-2115
United States

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