tech details

Hybrid Process for Post-Combustion CO2 Capture

Opportunity

Research is active on the patent pending technology titled, "Method for the Separation of a Gaseous Component Using a Solvent-Membrane Capture Process.” This technology is available for licensing and/or further collaborative research from the U.S. Department of Energy’s National Energy Technology Laboratory.


Overview

The current invention describes a hybrid process for post-combustion CO2 capture using a solvent-based absorption/high pressure stripping gas step coupled with selective CO2 membrane separation. The method is unique in that the solvent-based absorption/stripping process uses thermal compression to efficiently increase the concentration and partial pressure of CO2 in the gas mixture, allowing for more efficient membrane separation. The hybrid process integrates the most efficient aspects of each method resulting in a reduction of the parasitic energy demand of the post-combustion CO2 capture process.


Significance

  • Process reduces energy consumption, footprint, and capital costs
  • Reduces the need for mechanical compression of the mixed flue gas stream
  • Reduces the amount of membrane area required for CO2 separation
  • Process is compatible with a range of stripping gases, solvents, and membrane systems
  • Deployment of this process will make CO2 capture more economical


Applications

  • Capture of CO2 from fossil fuel-derived flue gas streams
  • Other applications where CO2 separation and capture is desired


Related Patents

U.S. Provisional patent application No. 61/914,981, titled "Method for the Separation of a Gaseous Component Using A Solvent-Membrane Capture Process," was filed December 12, 2013

Inventors: David R. Luebke, David P. Hopkinson, Shiaoguo Chen, Zhiwei Li, Juan Morinelly, and Victor Kusuma


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