Benchmarking the Timmins Process – a novel approach for low energy pre‐combustion carbon capture in IGCC flowsheets

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 exami...

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Bibliographic Details
Published in:Canadian journal of chemical engineering 2017-06, Vol.95 (6), p.1023-1033
Main Authors: Hallmark, Bart, Parra‐Garrido, Julian, Murdoch, Andrew, Salmon, Ian, Hodrien, Chris
Format: Article
Language:English
Subjects:
Benchmarking
Benchmarks
Carbon capture and storage
Carbon dioxide
Carbon monoxide
Carbon sequestration
Chemical engineering
clean coal technologies
Coal-fired power plants
Combined cycle engines
Combustion
Cooling
Efficiency
Energy consumption
Energy policy
Federal agencies
Gasification
Government agencies
Igcc
Liquefaction
modelling and simulation studies
Washing
Water temperature
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Summary: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. Modelling 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 favourably 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.
ISSN:0008-4034
1939-019X
DOI:10.1002/cjce.22746