Pilot testing of a heat integrated 0.7 MWe CO2 capture system with two-stage air-stripping: Amine degradation and metal accumulation

Jesse G. Thompson, Saloni Bhatnagar, Megan Combs, Keemia Abad, Femke Onneweer, Jonathan Pelgen, David Link, Jose Figueroa, Heather Nikolic, Kunlei Liu

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

An advanced 0.7 MWe small pilot coal-fired post-combustion CO2 capture system with heat integration combined with two-stage stripping was tested on a slipstream of flue gas by the University of Kentucky Center for Applied Energy Research (UKy-CAER). Evaluation of solvent degradation products was performed to determine the impact of oxygen exposure due to incorporation of the secondary air stripper into the conventional amine absorber/stripper system. The overall degradation rates and products observed during the testing campaign were comparable to previously published reports using 30% monoethanolamine (MEA) as the baseline/commissioning solvent. The rates of heat stable salt accumulation and amine degradation were similar to those from conventional CO2 capture systems using MEA. Metal accumulation as the result of material corrosion inside the system from an improperly constructed material was observed. The impact of the secondary air stripper appears negligible relative to other published MEA campaigns tested at similar flue gas conditions and system operating hours.

Original languageEnglish
Pages (from-to)23-33
Number of pages11
JournalInternational Journal of Greenhouse Gas Control
Volume64
DOIs
StatePublished - 2017

Bibliographical note

Funding Information:
The authors would like to acknowledge the Department of Energy National Energy Technology Laboratory (NETL) for the primary financial support of this project (DE-FE0007395). Additional financial support was provided by Louisville Gas & Electric (LG&E) and Kentucky Utilities (KU) , Duke Energy , Electric Power Research Institute (EPRI) , Kentucky Power , and the Kentucky Department of Energy Development and Independence (KY-DEDI) . The authors would like to thank the UKy-CAER pilot operations staff including Len Goodpaster, Otto Hoffmann, Marshall Marcum, Andy Placido and Amanda Warriner. The authors would also like to thank everyone at Kentucky Utilities E.W. Brown Station for serving as the host site and for their support of this project.

Publisher Copyright:
© 2017 Elsevier Ltd

Keywords

  • CO capture
  • Heat stable salts
  • Heavy metals
  • Monoethanolamine
  • Small pilot CCS
  • Solvent degradation

ASJC Scopus subject areas

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

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