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Process for separating nitrogen from methane using microchannel process technology

United States Patent

July 31, 2007
View the Complete Patent at the US Patent & Trademark Office
The disclosed invention relates to a process for separating methane or nitrogen from a fluid mixture comprising methane and nitrogen, the process comprising: (A) flowing the fluid mixture into a microchannel separator, the microchannel separator comprising a plurality of process microchannels containing a sorption medium, the fluid mixture being maintained in the microchannel separator until at least part of the methane or nitrogen is sorbed by the sorption medium, and removing non-sorbed parts of the fluid mixture from the microchannel separator; and (B) desorbing the methane or nitrogen from the sorption medium and removing the desorbed methane or nitrogen from the microchannel separator. The process is suitable for upgrading methane from coal mines, landfills, and other sub-quality sources.
Tonkovich; Anna Lee (Marysville, OH), Qiu; Dongming (Dublin, OH), Dritz; Terence Andrew (Worthington, OH), Neagle; Paul (Westerville, OH), Litt; Robert Dwayne (Westerville, OH), Arora; Ravi (Dublin, OH), Lamont; Michael Jay (Hilliard, OH), Pagnotto; Kristina M. (Cincinnati, OH)
Velocys, Inc. (Plain City, OH)
10/ 927,370
August 26, 2004
This invention was made with Government support under Contract DE-FC26-03NT41905 awarded by the United States Department of Energy. The Government has certain rights in this invention.