Carbon ion pump for removal of carbon dioxide from combustion gas and other gas mixtures

Patent · Tue Nov 09 00:00:00 EST 2010

OSTI ID:1014942

Aines, Roger D ^[1]; Bourcier, William L ^[1]

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1. Livermore, CA

A novel method and system of separating carbon dioxide from flue gas is introduced. Instead of relying on large temperature or pressure changes to remove carbon dioxide from a solvent used to absorb it from flue gas, the ion pump method, as disclosed herein, dramatically increases the concentration of dissolved carbonate ion in solution. This increases the overlying vapor pressure of carbon dioxide gas, permitting carbon dioxide to be removed from the downstream side of the ion pump as a pure gas. The ion pumping may be obtained from reverse osmosis, electrodialysis, thermal desalination methods, or an ion pump system having an oscillating flow in synchronization with an induced electric field.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• Assignee: Lawrence Livermore National Security, LLC (Livermore, CA)
• Patent Number(s): 7,828,883
• Application Number: US Patent Application 11/657,682
• OSTI ID: 1014942
• Country of Publication: United States
• Language: English