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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 100.degree. 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.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1349728
Assignee:
Iowa State University Research Foundation, Inc. GFO
Patent Number(s):
9,611,439
Application Number:
13/905,112
Contract Number:
FG36-07GO87003
Resource Relation:
Patent File Date: 2013 May 29
Research Org:
Iowa State University Research Foundation, Inc. Ames, IA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS

Works referenced in this record:

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Review of fast pyrolysis of biomass and product upgrading
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Review of biomass pyrolysis oil properties and upgrading research
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The production of biofuels and renewable chemicals by fast pyrolysis of biomass
journal, January 2007

An overview of fast pyrolysis of biomass
journal, December 1999

Renewable fuels and chemicals by thermal processing of biomass
journal, March 2003

Pyrolysis of Wood/Biomass for Bio-oil: A Critical Review
journal, May 2006
  • Mohan, Dinesh; Pittman,, Charles U.; Steele, Philip H.
  • Energy & Fuels, Vol. 20, Issue 3, p. 848-889
  • DOI: 10.1021/ef0502397