Apparatus and method for extracting biomass
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United States of America Patent
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Jul 8, 2003
Grant Date -
Jun 20, 2002
app pub date -
Dec 18, 2000
filing date -
Dec 18, 2000
priority date (Note) -
Expired
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Abstract
Discloses is apparatus for extracting biomass from a biomass supply, including a hollow vessel in which is established a countercurrent flow of biomass in the form of liquid or particles of biomass entrained in a liquid and solvent. The vessel includes an outlet for a solvent/extract mixture at a first vessel side and an outlet for biomass at a second vessel side. The solvent/extract mixture outlet is coupled to a closed loop circuit that includes at least a separator which encompasses a condenser having first and second stages connected in series with the second of such stages operating at a lower temperature than the first stage and both stages supplying substantially uncontaminated solvent to the hollow vessel.
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