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Title: Capture and release of mixed acid gasses with binding organic liquids

Patent ·
OSTI ID:1014658

Reversible acid-gas binding organic liquid systems that permit separation and capture of one or more of several acid gases from a mixed gas stream, transport of the liquid, release of the acid gases from the ionic liquid and reuse of the liquid to bind more acid gas with significant energy savings compared to current aqueous systems. These systems utilize acid gas capture compounds made up of strong bases and weak acids that form salts when reacted with a selected acid gas, and which release these gases when a preselected triggering event occurs. The various new materials that make up this system can also be included in various other applications such as chemical sensors, chemical reactants, scrubbers, and separators that allow for the specific and separate removal of desired materials from a gas stream such as flue gas.

Research Organization:
Batelle Memorial Institute (Richland, WA)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RLO1830
Assignee:
Batelle Memorial Institute (Richland, WA)
Patent Number(s):
7,799,299
Application Number:
US Patent Application 12/360,717
OSTI ID:
1014658
Country of Publication:
United States
Language:
English

References (6)

Desulfurization of Flue Gas: SO2 Absorption by an Ionic Liquid journal April 2004
Hydroxyl Ammonium Ionic Liquids:  Synthesis, Properties, and Solubility of SO 2 journal March 2007
Reversible Uptake of COS, CS2, and SO2: Ionic Liquids with O-Alkylxanthate, O-Alkylthiocarbonyl, and O-Alkylsulfite Anions journal August 2009
Measurement of SO 2 Solubility in Ionic Liquids journal August 2006
Tuning ionic liquids for high gas solubility and reversible gas sorption journal January 2008
CO2 -binding organic liquids (CO2 BOLs) for post-combustion CO2 capture journal February 2009

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