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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

Other works cited in this record:

Process for fractionating fast-pyrolysis oils, and products derived therefrom
patent, July 1990

Process for the thermal conversion of biomass to liquids
patent, February 1997

Method and apparatus for a circulating bed transport fast pyrolysis reactor system
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Method and equipment for pyrolytic treatment of organic material
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Natural resin formulations
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Method for producing and preparing fast pyrolysis products from biomass for an entrained-flow pressure gasification
patent, October 2011

Methods for integrated fast pyrolysis processing of biomass
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Production of higher quality bio-oils by in-line esterification of pyrolysis vapor
patent, December 2014

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Renewable fuels and chemicals by thermal processing of biomass
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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

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