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dc.contributor.authorHazlewood, Patrick Evanen_US
dc.date.accessioned2006-06-09T18:19:58Z
dc.date.available2006-06-09T18:19:58Z
dc.date.issued2006-04-11en_US
dc.identifier.urihttp://hdl.handle.net/1853/10531
dc.description.abstractIncreased equipment failures and the resultant increase in unplanned downtime as the result of process optimization programs continue to plague pulp mills. The failures are a result of a lack of understanding of corrosion in the different pulping liquors, specifically the parameters responsible for its adjustment such as the role and identification of inorganic and organic species. The current work investigates the role of inorganic species, namely sodium hydroxide and sodium sulfide, on liquor corrosivity at a range of process conditions beyond those currently experienced in literature. The role of sulfur species, in the activation of corrosion and the ability of hydroxide to passivate carbon steel A516-Gr70, is evaluated with gravimetric and electrochemical methods. The impact of wood chip weathering on process corrosion was also evaluated. Results were used to identify black liquor components, depending on the wood species, which play a significant role in the activation and inhibition of corrosion for carbon steel A516-Gr70 process equipment. Further, the effect of black liquor oxidation on liquor corrosivity was evaluated. Corrosion and stress corrosion cracking performance of selected materials provided information on classes of materials that may be reliably used in aggressive pulping environments.en_US
dc.format.extent2889933 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectStress corrosion crackingen_US
dc.subjectOxidation
dc.subjectWood species
dc.subjectOrganics
dc.subjectCaustic
dc.subjectSulfide
dc.subjectOpen circuit potential
dc.subjectSteels
dc.subjectCorrosion
dc.subjectPulp and paper industry
dc.titleFactors Affecting the Corrosivity of Pulping Liquorsen_US
dc.typeDissertationen_US
dc.description.degreePh.D.en_US
dc.contributor.departmentChemical Engineeringen_US
dc.description.advisorCommittee Chair: Singh, Preet; Committee Co-Chair: Hsieh, Jeff; Committee Member: Banerjee, Sujit; Committee Member: Deng, Yulin; Committee Member: Ragauskas, Arthuren_US


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