Pilot scale testing of an advanced solvent in a 0.7 MWe post-combustion CO2 capture unit

Reynolds A. Frimpong, Heather Nikolic, David Bahr, Gopi Kiran, Kunlei Liu

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

An advanced Amine Promoted Buffer Solution (APBS), APBS-CDRMax® (CDRMax), developed by Carbon Clean Solutions Limited (CCSL), was tested at the 0.7 MWe CO2 capture facility at Kentucky Utilities E.W. Brown Generation Station using a heat-integrated two-staged stripping CO2 capture process. The performance of the solvent was evaluated to determine operating conditions that maximized the cyclic capacity of the solvent and results in energy savings. The regeneration energy ranged from 2.9 to 3.3 GJ/ton CO2 with 14 vol % (dry) CO2 inlet and approximately 90 % capture. The difference in the reboiler specific heat duty at stripper pressures of 1.7 and 2.1 bar was minimal as similar amounts of water vapor were observed in the CO2 product stream at stripper outlet. Recycling of product CO2 increased the inlet CO2 concentration to the absorber from 14 to 16 vol% which enhanced mass transfer from the gas to the solvent resulting in about 5 % reduction in the energy of regeneration at the lower stripper pressure. The solvent circulation rate was reduced by about 30 % relative to previous 30 wt% MEA campaign for the CO2 target capture of 90 %. Additionally, the reduced solvent make-up rate of CDRMax shows promise for capital and operating cost savings for post-combustion CO2 capture.

Original languageEnglish
Article number103290
JournalInternational Journal of Greenhouse Gas Control
Volume106
DOIs
StatePublished - Mar 2021

Bibliographical note

Funding Information:
The authors would like to acknowledge the U.S Department of Energy National Energy Technology Laboratory (U.S DOE, NETL) for the primary financial support of this project (DE-FE0007395 and DE-FE0031583). The additional support provided by Louisville Gas and Electric & Kentucky Utilities (LGE&KU) , Duke Energy, Electric Power Research Institute, Inc. (EPRI) , Kentucky Power and the Kentucky Department for Energy Development and Independence (KY DEDI) is also very much appreciated. The authors would like to thank the UK CAER technical and operations team including Len Goodpaster, Marshall Marcum and Jonathan Pelgen. The authors would also like to thank everyone at KU E.W. Brown Station for serving as the host site and for their support of the project.

Funding Information:
The authors would like to acknowledge the U.S Department of Energy National Energy Technology Laboratory (U.S DOE, NETL) for the primary financial support of this project (DE-FE0007395 and DE-FE0031583). The additional support provided by Louisville Gas and Electric & Kentucky Utilities (LGE&KU), Duke Energy, Electric Power Research Institute, Inc. (EPRI), Kentucky Power and the Kentucky Department for Energy Development and Independence (KY DEDI) is also very much appreciated. The authors would like to thank the UK CAER technical and operations team including Len Goodpaster, Marshall Marcum and Jonathan Pelgen. The authors would also like to thank everyone at KU E.W. Brown Station for serving as the host site and for their support of the project.

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

  • Advanced solvent
  • CO capture
  • Heat integration
  • Pilot scale
  • Power plant

ASJC Scopus subject areas

  • Pollution
  • Energy (all)
  • Management, Monitoring, Policy and Law
  • Industrial and Manufacturing Engineering

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