Benchmarking the Timmins Process – a novel approach for low energy pre-combustion carbon capture in IGCC flowsheets
Canadian Journal of Chemical Engineering
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Hallmark, B., Parra-Garrido, J., Murdoch, A., Salmon, I., & Hodrien, C. (2017). Benchmarking the Timmins Process – a novel approach for low energy pre-combustion carbon capture in IGCC flowsheets. Canadian Journal of Chemical Engineering, 95 1023-1033. https://doi.org/10.1002/cjce.22746
This paper reports results from an initial benchmarking study of the Timmins Process, a novel pre-combustion carbon capture process that uses a combination of traditional unit operations, DEPG scrubbing, carbon monoxide shift and carbon dioxide liquefaction, in a unique arrangement. The study examines the performance of the Timmins Process embedded within an integrated gasifier combined cycle (IGCC) flowsheet and the results are compared to data from the US Department of Energy (DoE) cost and performance baseline studies for coal-fired energy plants. Modeling was undertaken using UniSim R400 (Honeywell Inc.) with thermodynamic parameters for DEPG interactions being regressed from literature data; these results are also reported here. The net efficiency of an IGCC flowsheet incorporating the Timmins Process, with a carbon capture level of 91.8 % on a mass basis, varies between 33.8 % and 34.3 % depending on the process configuration and the cooling water temperature. This result compares very favorably to a DoE study for a conventional capture process embedded within an IGCC flowsheet that operated at an efficiency of 31.2 %. Further, more detailed, studies are recommended to assess the impact of various assumptions that underpin this work.
UK Technology Strategy Board (strand two of the Carbon Abatement Technology call, 2011), Honeywell Inc. (research use of UniSim R400 as part of its Universities Program)
External DOI: https://doi.org/10.1002/cjce.22746
This record's URL: https://www.repository.cam.ac.uk/handle/1810/261631