Process and system for converting biogas to liquid fuels
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United States of America Patent
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Feb 19, 2013
Grant Date -
Jan 26, 2012
app pub date -
Dec 17, 2009
filing date -
Dec 17, 2008
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Abstract
A method of producing a hydrocarbon fuel from a hydrocarbon-containing gas is disclosed and described. A hydrocarbon-containing gas is produced (10) containing from about 25% to about 50% carbon dioxide and can be reformed (12) with a steam gas to form a mixture of hydrogen, carbon monoxide and carbon dioxide. The reforming can be a composite dry-wet reforming or a tri-reforming step. The mixture of hydrogen, carbon monoxide and carbon dioxide can be at least partially converted (14) to a methanol product. The methanol product can be converted to the hydrocarbon fuel (18), optionally via DME synthesis (16). The method allows for effective fuel production with low catalyst fouling rates and for operation in an unmanned, self-contained unit at the source of the hydrocarbon-producing gas.
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