CO2 Capture Membrane Process for Power Plant Flue Gas
Project No.: DE-NT0005313


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Research Triangle Institute (RTI) International is researching fluorinated polymer membranes for carbon dioxide capture.  RTI’s research effort includes membrane materials development, module design, and process design.  RTI is pursuing the development of two hollow-fiber membrane materials. First, RTI is working with Generon to develop a membrane material constructed of polycarbonate-based polymers. Lab-scale membrane modules are being studied with simulated flue-gas mixtures with and without flue gas emission contaminants. Two larger-scale polycarbonate membrane module prototypes are being tested with a slipstream of actual flue gas from the U.S. Environmental Protection Agency’s (EPA) Multipollutant Combustion Research Facility (MPCRF). RTI is also working with Arkema to develop the second membrane material constructed of polyvinylidene fluoride (PVDF)-based polymers.

Membranes could provide PC-fired power plants with a cost-effective method for CO2 capture. The membrane module system is relatively easy to install within an existing PC-fired plant and does not require any major modifications to the existing equipment and infrastructure. The membrane utilizes passive separation of gases, making it energy efficient because it does not require regeneration energy, as do solvent and sorbent processes. The module’s compact design and ability to link with hundreds of modules in tandem makes the hollow fiber membrane system easy to scale and retrofit. The membrane also lacks any moving parts, reducing the risk of a mechanical failure.

Related Papers and Publications:


  • For further information on this project, contact the NETL Project Manager, Andrew O'Palko.