Performance evaluation of PACT pilot-plant for CO2 capture from gas turbines with exhaust gas recycle

M. Akram*, U. Ali, T. Best, S. Blakey, K. N. Finney, M. Pourkashanian

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Exhaust Gas Recycle (EGR) is one of the technologies used to increase the CO2 concentration in the gas turbine flue gas. This paper presents the results of an experimental campaign carried out at the Pilot-scale Advanced Capture Technology (PACT) facilities at the UK Carbon Capture and Storage Research Centre (UKCCSRC). A 100 kWe Turbec T100 PH microturbine was integrated with a post combustion CO2 capture plant that has a CO2 capture capacity of one ton per day. The impact of different CO2 concentrations (representing a range of EGR ratios) on the post-combustion CO2 capture process was experimentally evaluated using 30% (wt.%) Monoethanolamine (MEA) solvent. It was observed that the specific reboiler duty was reduced by around 7.1% per unit percentage increase in CO2 concentration. Overall, it was seen that the higher the CO2 concentration, the lower the specific reboiler duty at a fixed capture rate. Both rich and lean solvent loadings increased with increase in flue gas CO2 concentration. Energy balance on the stripper has shown that steam generation rate and condenser duty increases with increase in CO2 concentration. The experimental data was used to develop and validate the model for the Pilot-scale amine capture plant using Aspen HYSYS.

Original languageEnglish
Pages (from-to)137-150
Number of pages14
JournalInternational Journal of Greenhouse Gas Control
Volume47
Early online date12 Feb 2016
DOIs
Publication statusPublished - Apr 2016

Bibliographical note

Funding Information:
The authors would like to acknowledge the financial support of the UK Engineering and Physical Sciences Research Council (EPSRC) in carrying out this work (EPSRC Gas-FACTS: Gas – Future Advanced Capture Technology Options, EP/J020788/1). The authors would like to acknowledge the UK CCS Research Centre ( www.ukccsrc.ac.uk ) for making their Pilot-scale Advanced Capture Technology (PACT) facilities available for the research. The UKCCSRC is funded by the EPSRC as part of the Research Council UK (RCUK) Energy Programme.

Publisher Copyright:
© 2016 Elsevier B.V., All rights reserved.

Keywords

  • Exhaust Gas Recycle
  • Gas turbines
  • Post-combustion CO capture
  • Process modelling
  • Specific reboiler duty

ASJC Scopus subject areas

  • Pollution
  • General Energy
  • Industrial and Manufacturing Engineering
  • Management, Monitoring, Policy and Law

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