Journal article

Integrated adsorption and absorption process for post-combustion CO2 capture

Gongkui Xiao, Penny Xiao, Andrew Hoadley, Paul Webley

FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING | SPRINGER | Published : 2020

Abstract

This study explored the feasibility of integrating an adsorption and solvent scrubbing process for post-combustion CO2 capture from a coal-fired power plant. This integrated process has two stages: the first is a vacuum swing adsorption (VSA) process using activated carbon as the adsorbent, and the second stage is a solvent scrubber/stripper system using monoethanolamine (30 wt-%) as the solvent. The results showed that the adsorption process could enrich CO2 in the flue gas from 12 to 50 mol-% with a CO2 recovery of > 90%, and the concentrated CO2 stream fed to the solvent scrubber had a significantly lower volumetric flowrate. The increased CO2 concentration and reduced feed flow to the ab..

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Grants

Funding Acknowledgements

The authors wish to acknowledge financial assistance provided to the CO<INF>2</INF>CRC by the Australian Government through its CRC program and through Australian National Low Emissions Coal Research and Development (ANLEC R&D). ANLEC R&D is supported by Australian Coal Association Low Emissions Technology Limited and the Australian Government through the Clean Energy Initiative.