OPTIMIZATION OF TORREFACTION VOLATILES FOR PRODUCING LIQUID FUEL FROM BIOMASS
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United States of America Patent
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Issued Date -
Sep 26, 2013
app pub date -
Mar 26, 2012
filing date -
Mar 26, 2012
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Abstract
Generation of a liquid fuel product in an integrated multiple zone plant is discussed. Syngas components are supplied to a methanol (CH3OH) synthesis reactor from outputs of a first zone containing a torrefaction unit and a second zone containing a biomass gasifier that are combined in parallel and that thermally decompose biomass at different operating temperatures. Char particles of the biomass generated in the first zone are fed to the biomass gasifier in the second zone. Gasoline is produced via a methanol to gasoline process in a third zone, which receives its methanol derived from the syngas components fed to the methanol synthesis reactor. The gasoline derived from biomass is blended with condensable volatile materials including C5+ hydrocarbons collected during the pyrolyzation of the biomass in the torrefaction unit in the first zone in order to increase an octane rating of the blended gasoline.
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