Cellulose pyrolysis residence time distribution and the mechanism of reactive boiling ejection of aerosols from biomass

Paul Dauenhauer, Andrew R. Teixeira, David P. Schmidt, Kyle G. Mooney

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The pyrolysis of cellulose and lignocellulosic materials occurs through a molten intermediate liquid which thermally degrades to volatile components and produces primary aerosols. The generation of primary aerosols from biomass hinders the production of biofuels by pyrolysis, and intensifies the environmental impact of forest fires and the health implications associated with cigarette smoking. High speed photography is utilized to elucidate the ejection mechanism of aerosol particles from thermally decomposing cellulose at the timescale of milliseconds. Fluid modeling, based on first principles, and experimental measurement of the ejection phenomenon supports the proposed mechanism of reactive boiling ejection. Identification of the ejection mechanism of intermediate cellulose confirms the transportation of nonvolatile material to the gas-phase and provides fundamental understanding for predicting the rate of aerosol generation and the residence time distribution of reacting, molten biopolymers.

Original languageEnglish (US)
Title of host publication11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings
StatePublished - Dec 1 2011
Event2011 AIChE Annual Meeting, 11AIChE - Minneapolis, MN, United States
Duration: Oct 16 2011Oct 21 2011

Publication series

Name11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings

Other

Other2011 AIChE Annual Meeting, 11AIChE
Country/TerritoryUnited States
CityMinneapolis, MN
Period10/16/1110/21/11

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