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CO2 capture from syngas by an adsorption process at a biomass gasification CHP plant: Its comparison with amine-based CO2 capture

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Original languageEnglish
Pages (from-to)71-81
Number of pages11
JournalInternational Journal of Greenhouse Gas Control
Volume35
Early online date26 Feb 2015
DOIs
Publication statusPublished - 1 Apr 2015

Abstract

An exemplary 10 MWth biomass-fuelled CHP plant equipped with a FICFB (Fast Internally Circulating Fluidised Bed) gasifier and a Jenbacher type 6 gas engine was simulated using Honeywell UniSim R400 to estimate the power and thermal outputs. The biomass gasification CHP plant was integrated with either a pre-combustion adsorptive capture process or a conventional post-combustion amine process to achieve carbon-negative power and heat generation. The practical maximum of carbon capture rate achievable with an adsorptive CO2 capture process applied to a syngas stream was 49% in overall while the amine process could boost the carbon capture rate up to 59%. However, it was found that the two-stage, two-bed PVSA (Pressure Vacuum Swing Adsorption) unit would have a clear advantage over the conventional amine processes in that the CHP plant integrated with the PVSA unit could achieve 1.7% points higher net electrical efficiency and 12.8% points higher net thermal efficiency than the CHP plant integrated with the amine process.

    Research areas

  • Biomass gasification CHP plant , Carbon capture, Pressure Vacuum Swing Adsorption, Amine process, Process simulation

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