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Title: Bio-oil fractionation and condensation

The present invention relates to a method of fractionating bio-oil vapors which involves providing bio-oil vapors comprising bio-oil constituents. The bio-oil vapors are cooled in a first stage which comprises a condenser having passages for the bio-oil separated by a heat conducting wall from passages for a coolant. The coolant in the condenser of the first stage is maintained at a substantially constant temperature, set at a temperature in the range of 75 to C., to condense a first liquid fraction of liquefied bio-oil constituents in the condenser of the first stage. The first liquid fraction of liquified bio-oil constituents from the condenser in the first stage is collected. Also disclosed are steps for subsequently recovering further liquid fractions of liquefied bio-oil constituents. Particular compositions of bio-oil condensation products are also described.
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Issue Date:
OSTI Identifier:
Iowa State University Research Foundation, Inc. GFO
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2013 May 29
Research Org:
Iowa State University Research Foundation, Inc. Ames, IA (United States)
Sponsoring Org:
Country of Publication:
United States

Works referenced in this record:

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  • Mohan, Dinesh; Pittman,, Charles U.; Steele, Philip H.
  • Energy & Fuels, Vol. 20, Issue 3, p. 848-889
  • DOI: 10.1021/ef0502397