LAPSE:2023.16203
Published Article
LAPSE:2023.16203
CO2 Capture from IGCC by Low-Temperature Synthesis Gas Separation
David Berstad, Geir Skaugen, Simon Roussanaly, Rahul Anantharaman, Petter Nekså, Kristin Jordal, Stian Trædal, Truls Gundersen
March 3, 2023
Capture conditions for CO2 vary substantially between industrial point sources. Depending on CO2 fraction and pressure level, different capture technologies will be required for cost- and energy-efficient decarbonisation. For decarbonisation of shifted synthesis gas from coal gasification, several studies have identified low-temperature CO2 capture by condensation and phase separation as an energy- and cost-efficient option. In the present work, a process design is proposed for low-temperature CO2 capture from an Integrated Gasification Combined Cycle (IGCC) power plant. Steady-state simulations were carried out and the performance of the overall process, as well as major process components, were investigated. For the baseline capture unit layout, delivering high-pressure CO2 at 150 bar, the net specific power requirement was estimated to 273 kJe/kgCO2, and an 85% CO2 capture ratio was obtained. The impact of 12 different process parameters was studied in a sensitivity analysis, the results of which show that compressor and expander efficiencies, as well as synthesis gas separation temperature, have the highest impact on power requirements. Modifying the process to producing cold liquid CO2 for ship transport resulted in 16% increase in net power requirements and is well suited for capturing CO2 for ship transport.
Keywords
Carbon Dioxide Capture, CCS, cryogenic, IGCC, low-temperature, precombustion
Suggested Citation
Berstad D, Skaugen G, Roussanaly S, Anantharaman R, Nekså P, Jordal K, Trædal S, Gundersen T. CO2 Capture from IGCC by Low-Temperature Synthesis Gas Separation. (2023). LAPSE:2023.16203
Author Affiliations
Berstad D: SINTEF Energy Research, NO-7034 Trondheim, Norway
Skaugen G: SINTEF Energy Research, NO-7034 Trondheim, Norway
Roussanaly S: SINTEF Energy Research, NO-7034 Trondheim, Norway [ORCID]
Anantharaman R: SINTEF Energy Research, NO-7034 Trondheim, Norway
Nekså P: SINTEF Energy Research, NO-7034 Trondheim, Norway
Jordal K: SINTEF Energy Research, NO-7034 Trondheim, Norway
Trædal S: SINTEF Energy Research, NO-7034 Trondheim, Norway [ORCID]
Gundersen T: Department of Energy and Process Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
Journal Name
Energies
Volume
15
Issue
2
First Page
515
Year
2022
Publication Date
2022-01-12
Published Version
ISSN
1996-1073
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Original Submission
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PII: en15020515, Publication Type: Journal Article
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LAPSE:2023.16203
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doi:10.3390/en15020515
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Mar 3, 2023
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