Bio-oil fractionation and condensation

Patent metadata

Field	Value
Publication number	US-9611439-B1
Application number	US-201313905112-A
Country	US
Kind code	B1
Filing date	May 29, 2013
Priority date	Aug 29, 2008
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

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° 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.

First claim

What is claimed is:

1. A bio-oil condensation product composition comprising: furans having a weight percentage in the range of 2 to 7%; minor carbohydrates having a weight percentage in the range of 0 to less than 5%; acetic acid having a weight percentage in the range of 0 to less than 4%; levoglucosan having a weight percentage in the range of 5 to 15%; water insoluble compounds having a weight percentage in the range of 50 to 75%; water having a weight percentage in the range of 3 to 7%; syringols having a weight percentage in the range of 0 to less than 5%; guaiacols having a weight percentage in the range of 3 to 7%; and phenols having a weight percentage in the range of 5 to 10%.

2. A bio-oil condensation product composition comprising: furans having a weight percentage in the range of 6 to 12%; minor carbohydrates having a weight percentage in the range of 10 to 20%; acetic acid having a weight percentage in the range of 0 to less than 5%; levoglucosan having a weight percentage in the range of 0 to less than 4%; water insoluble compounds having a weight percentage in the range of 10 to 20%; water having a weight percentage in the range of 5 to 15%; syringols having a weight percentage in the range of 3 to 10%; guaiacols having a weight percentage in the range of 7 to 15%; and phenols having a weight percentage in the range of 10 to 18%.

3. A bio-oil condensation product composition comprising: furans having a weight percentage in the range of 6 to 12%; minor carbohydrates having a weight percentage in the range of 10 to 20%; acetic acid having a weight percentage in the range of 5 to 15%; levoglucosan having a weight percentage in the range of 0 to less than 4%; water insoluble compounds having a weight percentage in the range of 10 to 25%; water having a weight percentage in the range of 5 to 20%; syringols having a weight percentage in the range of 3 to 10%; guaiacols having a weight percentage in the range of 7 to 15%; and phenols having a weight percentage in the range of 10 to 18%.

4. A bio-oil condensation product composition comprising: furans having a weight percentage in the range of 0 to less than 5%; minor carbohydrates having a weight percentage in the range of 8 to 15%; acetic acid having a weight percentage in the range of 5 to 15%; hydroxyacetaldehyde having a weight percentage in the range of 0 to less than 4%; water insoluble compounds having a weight percentage in the range of 0 to less than 1%; water having a weight percentage in the range of 56 to 90%; guaiacols having a weight percentage in the range of 0 to less than 3%; and phenols having a weight percentage in the range of 0 to less than 5%.

Assignees

• Univ Iowa State Res Found Inc

Inventors

• Brown Robert C
• Jones Samuel T
• Pollard Anthony

Classifications

• C10K1/04 Primary

  by cooling to condense non-gaseous materials {(C10K1/001 takes precedence)} · CPC title

• C10G1/02

  by distillation · CPC title

• C10L1/1802 Primary

  natural products, e.g. waxes, extracts, fatty oils · CPC title

• C10C5/00

  Production of pyroligneous acid {distillation of wood, dry distillation of organic waste}(carbonisation of wood C10B) · CPC title

• C10B53/02

  of cellulose-containing material (production of pyroligneous acid C10C5/00) · CPC title