Influence of pyrolysis conditions on macropore structure of char particles

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dc.contributor.advisorZygourakis, Kyriacosen_US
dc.creatorBoissiere, Francois Patriceen_US
dc.date.accessioned2009-06-04T00:08:36Zen_US
dc.date.available2009-06-04T00:08:36Zen_US
dc.date.issued1993en_US
dc.description.abstractA systematic analysis of the structure of char particles produced from an Illinois #6 coal was carried out. Coal particles were pyrolyzed in a hot-stage reactor under inert (N$\sb2$) and reactive (5% O$\sb2$ / 95% N$\sb2$) atmospheres at various heating rates (0.1, 1 and 10$\sp\circ$C/s) and final heat treatment temperatures (500 and 700$\sp\circ$C). Image analysis procedures were used to measure the size and macroporosity of the particles, and the surface area and size distribution of the macropores. High heating rates and the addition of oxygen resulted in larger particle swelling and increased the macroporosity, the surface area and the fraction of large macropores with thin walls. Heat treatment temperatures had smaller effects on char particle structure. Our data confirm the strong effects of pyrolysis conditions on char reactivity during combustion in the diffusion-limited regime. They also provide the necessary parameters for char combustion models.en_US
dc.format.extent110 p.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoThesis Ch.E. 1993 Boissiereen_US
dc.identifier.citationBoissiere, Francois Patrice. "Influence of pyrolysis conditions on macropore structure of char particles." (1993) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/13694">https://hdl.handle.net/1911/13694</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/13694en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectChemical engineeringen_US
dc.titleInfluence of pyrolysis conditions on macropore structure of char particlesen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentChemical Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
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