Carbon Dioxide Capture and Separation Techniques for Gasification-based Power Generation Point Sources

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The capture/separation step for carbon dioxide (CO2) from large-point sources is a critical one with respect to the technical feasibility and cost of the overall carbon sequestration scenario. For large-point sources, such as those found in power generation, the carbon dioxide capture techniques being investigated by the in-house research area of the National Energy Technology Laboratory possess the potential for improved efficiency and reduced costs as compared to more conventional technologies. The investigated techniques can have wide applications, but the research has focused on capture/separation of carbon dioxide from flue gas (post-combustion from fossil fuel-fired combustors) and from fuel gas ... continued below

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Pennline, H. W.; Luebke, D. R.; Jones, K. L.; Morsi, B. I.; Heintz, Y. J. & Ilconich, J. B. June 1, 2007.

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Description

The capture/separation step for carbon dioxide (CO2) from large-point sources is a critical one with respect to the technical feasibility and cost of the overall carbon sequestration scenario. For large-point sources, such as those found in power generation, the carbon dioxide capture techniques being investigated by the in-house research area of the National Energy Technology Laboratory possess the potential for improved efficiency and reduced costs as compared to more conventional technologies. The investigated techniques can have wide applications, but the research has focused on capture/separation of carbon dioxide from flue gas (post-combustion from fossil fuel-fired combustors) and from fuel gas (precombustion, such as integrated gasification combined cycle or IGCC). With respect to fuel gas applications, novel concepts are being developed in wet scrubbing with physical absorption; chemical absorption with solid sorbents; and separation by membranes. In one concept, a wet scrubbing technique is being investigated that uses a physical solvent process to remove CO2 from fuel gas of an IGCC system at elevated temperature and pressure. The need to define an ideal solvent has led to the study of the solubility and mass transfer properties of various solvents. Pertaining to another separation technology, fabrication techniques and mechanistic studies for membranes separating CO2 from the fuel gas produced by coal gasification are also being performed. Membranes that consist of CO2-philic ionic liquids encapsulated into a polymeric substrate have been investigated for permeability and selectivity. Finally, dry, regenerable processes based on sorbents are additional techniques for CO2 capture from fuel gas. An overview of these novel techniques is presented along with a research progress status of technologies related to membranes and physical solvents.

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Publisher - in 2007 A&WMA Annual Conference Proceedings CD-ROM, Air & Waste Management Association, Pittsburgh, PA, 2007, Paper 626, 14 pp.

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  • A&WMA (Air & Waste Management Association) 100th Annual Conference & Exhibition, Pittsburgh, PA, June 26-29, 2007

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  • Report No.: DOE/NETL-IR-2007-155
  • Grant Number: None cited
  • Office of Scientific & Technical Information Report Number: 915509
  • Archival Resource Key: ark:/67531/metadc880998

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  • June 1, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 4, 2016, 1:47 p.m.

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Pennline, H. W.; Luebke, D. R.; Jones, K. L.; Morsi, B. I.; Heintz, Y. J. & Ilconich, J. B. Carbon Dioxide Capture and Separation Techniques for Gasification-based Power Generation Point Sources, article, June 1, 2007; (digital.library.unt.edu/ark:/67531/metadc880998/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.