Comparison of solvent performance for CO2 capture from coal-derived flue gas: A pilot scale study

Reynolds A. Frimpong, Don Johnson, Lisa Richburg, Brian Hogston, Joseph E. Remias, James K. Neathery, Kunlei Liu

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


The performance of a proprietary solvent (CAER-B2), an amine-carbonate blend, for the absorption of CO2 from coal-derived flue gas is evaluated and compared with state-of-the-art 30wt% monoethanolamine (MEA) under similar experimental conditions in a 0.1MWth pilot plant. The evaluation was done by comparing the carbon capture efficiency, the overall mass transfer rates, and the energy of regeneration of the solvents. For similar carbon loadings of the solvents in the scrubber, comparable mass transfer rates were obtained. The rich loading obtained for the blend was 0.50molCO2/molamine compared to 0.44molCO2/molamine for MEA. The energy of regeneration for the blend was about 10% lower than that of 30wt% MEA. At optimum conditions, the blend shows promise in reducing the energy penalty associated with using industry standard, MEA, as a solvent for CO2 capture.

Original languageEnglish
Pages (from-to)963-969
Number of pages7
JournalChemical Engineering Research and Design
Issue number6
StatePublished - Jun 2013

Bibliographical note

Funding Information:
This work was supported with funding by members of the Carbon Management Research Group: American Electric Power (AEP) , Duke Energy, East Kentucky Power Cooperative (EKPC) , Electric Power Research Institute (EPRI) , Kentucky Department of Energy Development and Independence (KY DEDI) , and LG&E and KU Energy .


  • Amine blend
  • CO absorption
  • Energy penalty
  • Flue gas
  • Mass transfer
  • Pilot scale

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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