Solvent Degradation and Emissions from a 0.7MWe Pilot CO2 Capture System with Two-stage Stripping

Jesse Thompson, Heather Nikolic, Megan Combs, Saloni Bhatnagar, Jonanthan Pelgen, Keemia Abad, Kunlei Liu

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


The UKy-CAER team successfully tested an advanced 0.7 MWe post-combustion CO2 capture system on a coal-fired power plant using a heat integration process combined with two-stage stripping to enhance the CO2 absorber performance. One of the unique feature of the UKy-CAER integrated process is a two-stage stripping unit for solvent regeneration. The secondary stripper is empowered by the heat rejection from a conventional steam-heated (primary) stripper. The secondary stripper outlet stream at the commercial scale can be used as boiler secondary combustion air, consequently enriching the flue gas with CO2, resulting in less energy penalty required by the CO2 capture system. The primary goal of this study was to form an initial assessment of the impact on the amine solvent from coal combustion flue gas contaminants and the potential higher oxygen content in the solvent due to incorporation of the secondary air stripper into the conventional amine scrubber/stripper system. The overall oxidative degradation was comparable to previous reports with 30 wt% MEA solvent at similar flue gas run hours. This suggests that the addition of the secondary air stripper appears to be negligible with regards to solvent oxidation. Published by Elsevier Ltd.

Original languageEnglish
Pages (from-to)1297-1306
Number of pages10
JournalEnergy Procedia
StatePublished - 2017
Event13th International Conference on Greenhouse Gas Control Technologies, GHGT 2016 - Lausanne, Switzerland
Duration: Nov 14 2016Nov 18 2016

Bibliographical note

Publisher Copyright:
© 2017 The Authors.


  • Pilot CO capture
  • amine emissions
  • heat stable salt
  • monoethanolamine
  • solvent degradation

ASJC Scopus subject areas

  • General Energy


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