Global to push GA events into
skip to main content

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.
; ;
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

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
patent, August 1998

Method and equipment for pyrolytic treatment of organic material
patent, June 2001

Natural resin formulations
patent, December 2001

Bio-oil preservatives
patent, November 2002

Natural resin formulations
patent, January 2005

Rapid thermal conversion of biomass
patent, March 2011

Palladium catalyzed hydrogenation of bio-oils and organic compounds
patent, June 2011

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
patent, January 2012

Production of higher quality bio-oils by in-line esterification of pyrolysis vapor
patent, December 2014

Techno-economic comparison of biomass-to-transportation fuels via pyrolysis, gasification, and biochemical pathways
journal, November 2010

Review of fast pyrolysis of biomass and product upgrading
journal, March 2012

Review of biomass pyrolysis oil properties and upgrading research
journal, January 2007

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

Similar records in DOepatents and OSTI.GOV collections: