Polymer-Based Carbon Dioxide Capture Membrane Systems
Project No.: FWP-308-13
Los Alamos National Laboratory (LANL) set out to develop and demonstrate polymer-based membrane structures, deployment platforms, and sealing technologies that achieve the critical combination of high selectivity, high permeability, chemical stability, and mechanical stability at elevated temperatures (>150°C) and packaged in a scalable, economically viable, high area density system amenable to incorporation into an integrated gasification combined cycle (IGCC) plant for pre-combustion carbon dioxide (CO2) capture. LANL work-to-date has demonstrated that polybenzimidazole (PBI) and other benzimidazole-based materials show promise as membranes for pre-combustion-based capture of CO2. The primary goals of this project are to: continue to develop and demonstrate high-temperature PBI-based materials and morphologies as a separation media for hydrogen purification and carbon capture; demonstrate the performance of those materials in industrially relevant process streams; and further develop fabrication methodologies and separation schemes to support the technically and economically viable integration of a pre-combustion CO2 capture system based on these materials into an advanced IGCC plant. The work being conducted as part of this continuing development and demonstration effort includes the advancement of these materials in a commercially viable, all polymeric, HFM (hollow fiber membranes) platform. HFMs provide numerous opportunities for realization of the desired performance and economic enhancements associated with the use of this membrane-based capture technology for pre-combustion capture. Hollow fibers represent a high area density membrane platform, which will reduce the size requirement of the costly, high-temperature-tolerant membrane module housings, will minimize membrane support costs through their all-polymeric design, and will facilitate membrane flux maximization through processing facilitated selective layer thickness minimization.
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- For further information on this project, contact the NETL Project Manager, Elaine Everitt.