A performance modelling study of integrating a MEA direct air capture unit with a CCGT absorber

9 Pages Posted: 23 Nov 2022 Last revised: 9 Mar 2023

See all articles by Stavros Michailos

Stavros Michailos

University of Hull

Abby Samson

University of Sheffield - Department of Mechanical Engineering

Mathieu Lucquiaud

University of Sheffield - Department of Mechanical Engineering

Jon Gibbins

University of Sheffield

Date Written: November 22, 2022

Abstract

Even in optimistic decarbonisation scenarios, there are most likely to be residual emissions that cannot be captured at source or avoided. Hence, research on CDR technologies, such as DACCS, to identify ways for effective deployment is essential for achieving net-zero targets. The scope of CCS deployment will rely on the amount of the residual emissions and, at the current standard for point sources of 90% to 95% CO2 capture, DACCS can be strategically significant to global economies. Possible integration opportunities for a DAC absorber with a conventional amine CCGT+PCC plant are examined, termed Co-DACCS. Modelling results suggest that the combination of an air absorber with a typical flue gas absorber can achieve specific reboiler duties down to 3.5 GJ/tCO2 for separating CO2 from the air, a value in the range of standalone CCGT+PCC applications. Depending on the configuration, there appears to be some trade-offs between DAC absorber capital cost and energy consumption. Ways to optimise combined operation and to make PCC plants ‘DACCS-ready’ are also discussed.

Keywords: MEA direct air capture; hybrid DAC+PCC, negative emissions; process modelling

Suggested Citation

Michailos, Stavros and Samson, Abby and Lucquiaud, Mathieu and Gibbins, Jon, A performance modelling study of integrating a MEA direct air capture unit with a CCGT absorber (November 22, 2022). Proceedings of the 16th Greenhouse Gas Control Technologies Conference (GHGT-16) 23-24 Oct 2022, Available at SSRN: https://ssrn.com/abstract=4283821 or http://dx.doi.org/10.2139/ssrn.4283821

Stavros Michailos (Contact Author)

University of Hull ( email )

Cottingham Road
Hull, Great Britain HU6 7RX
United Kingdom

Abby Samson

University of Sheffield - Department of Mechanical Engineering ( email )

Sir Frederick Mappin Building
Mappin Street
Sheffield, S1 3JD
United Kingdom

Mathieu Lucquiaud

University of Sheffield - Department of Mechanical Engineering

Jon Gibbins

University of Sheffield ( email )

Sir Frederick Mappin Building
Mappin Street
Sheffield, S1 3JD
United Kingdom

Do you have a job opening that you would like to promote on SSRN?

Paper statistics

Downloads
180
Abstract Views
493
Rank
311,191
PlumX Metrics