Degree Type

Thesis

Date of Award

2009

Degree Name

Master of Science

Department

Mechanical Engineering

First Advisor

Robert C. Brown

Abstract

Fast pyrolysis bio-oil, char and non-condensable gases were produced from a 8 kg/hr fluidized bed reactor. The bio-oil was collected in a fractionating bio-oil collection system that produced multiple fractions of bio-oil. This bio-oil was fractionated through two separate, but equally important, mechanisms within the collection system. The aerosols and vapors were selectively collected by utilizing laminar flow conditions to prevent aerosol collection and electrostatic precipitators to collect the aerosols. The vapors were successfully collected through a selective condensation process. The combination of these two mechanisms has created the ability to effectively fractionate the bio-oil into distinct fractions with improved characteristics. The fractions of bio-oil each contained different properties. Bio-oil properties that were improved included the energy content, water content, acid content and distribution of certain carbohydrates (levoglucosan and acetic acid). The improved properties that are associated with the fractionated bio-oil could allow bio-oil to be used in new markets, preferably without further upgrading. The decreased water and acid contents in the first four (of five) fractions could allow for easier upgrading of the bio-oil into transportation fuels or other valuable products.

DOI

https://doi.org/10.31274/etd-180810-2466

Copyright Owner

Anthony Joseph Sherwood Pollard

Language

en

Date Available

2012-04-30

File Format

application/pdf

File Size

172 pages

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