Simplified kinetic models describing the fate of coal nitrogen under fuel-rich combustion conditions

Persistent Link:
http://hdl.handle.net/10150/278453
Title:
Simplified kinetic models describing the fate of coal nitrogen under fuel-rich combustion conditions
Author:
Eftekharzadeh, Nooshin, 1965-
Issue Date:
1994
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Twenty three sets of experimental data describing CO, CO₂, H₂, O₂, NO, NH₃, and HCN concentration profiles for fuel-rich pulverized coal combustion in plug flow configurations were correlated by a simple kinetic mechanism. A comprehensive mechanism covering the entire fuel-rich zone was formulated by combining models describing short and long time scale combustion. Short time scale phenomena (up to 0.6 seconds) including coal devolatilization were handled by developing global semi-empirical models based on fundamental concepts. Kinetic parameters for the proposed mechanism were estimated by using a non-linear regression technique. This model then allowed the prediction of major and nitrogenous species evolved in the early stages of combustion and yielded reasonable predictions of all these species concentrations. For the long time scale phenomena (up to 3 seconds) an existing model was used. Under most experimental conditions the extended model yielded good predictions of nitrogenous species from known process variables.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Engineering, Chemical.; Environmental Sciences.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Chemical engineering
Degree Grantor:
University of Arizona
Advisor:
Wendt, Jost O. L.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleSimplified kinetic models describing the fate of coal nitrogen under fuel-rich combustion conditionsen_US
dc.creatorEftekharzadeh, Nooshin, 1965-en_US
dc.contributor.authorEftekharzadeh, Nooshin, 1965-en_US
dc.date.issued1994en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractTwenty three sets of experimental data describing CO, CO₂, H₂, O₂, NO, NH₃, and HCN concentration profiles for fuel-rich pulverized coal combustion in plug flow configurations were correlated by a simple kinetic mechanism. A comprehensive mechanism covering the entire fuel-rich zone was formulated by combining models describing short and long time scale combustion. Short time scale phenomena (up to 0.6 seconds) including coal devolatilization were handled by developing global semi-empirical models based on fundamental concepts. Kinetic parameters for the proposed mechanism were estimated by using a non-linear regression technique. This model then allowed the prediction of major and nitrogenous species evolved in the early stages of combustion and yielded reasonable predictions of all these species concentrations. For the long time scale phenomena (up to 3 seconds) an existing model was used. Under most experimental conditions the extended model yielded good predictions of nitrogenous species from known process variables.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectEngineering, Chemical.en_US
dc.subjectEnvironmental Sciences.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineChemical engineeringen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorWendt, Jost O. L.en_US
dc.identifier.proquest1360252en_US
dc.identifier.bibrecord.b32578854en_US
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