Evaluation of modified dry limestone process for flue gas desulfurization

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dc.contributor.authorCarr, Kathryn E.en
dc.contributor.committeechairSwanson, Robert E.en
dc.contributor.committeememberBrown, Jesse J. Jr.en
dc.contributor.committeememberMcNair, Harold M.en
dc.contributor.committeememberGibbs, Gerald V.en
dc.contributor.departmentMaterials Engineeringen
dc.date.accessioned2014-03-14T21:38:56Zen
dc.date.adate2010-06-22en
dc.date.available2014-03-14T21:38:56Zen
dc.date.issued1988-11-13en
dc.date.rdate2010-06-22en
dc.date.sdate2010-06-22en
dc.description.abstractAn experimental system was built to test the effect of various process parameters on the performance of the Modified Dry Limestone Process (MDLP) for flue gas desulfurization. Two types of limestone, one calcitic and one dolomitic, were used. These materials were characterized by ICP analysis, X-ray diffraction, optical microscopy, SEM, and electron microprobe before and after reaction. Performance was judged on the basis of the formation of a friable gypsum reaction product and the maintenance of a pH of about 4.84 or higher in water through which the exit gases were bubbled. Two primary and one secondary parameter were identified as the most important for optimum performance of the MDLP. The two primary parameters were temperature and water content. A temperature of 68°-70°C promoted reaction, while no reaction occurred at 31°C. The solubility of SO₂ in water was the controlling factor for water content. A maximum ratio of about 3.4 g SO₂/100 g water at 69°C was necessary. The secondary parameter was the type of limestone used. A dolomitic limestone with a reasonable amount of Fe performed better than either marble or a calcitic limestone, both low in Fe. A reasonable amount of Fe and an extensive pore structure seem to be the most important factors in limestone SO₂ absorption performance.en
dc.description.degreeMaster of Scienceen
dc.format.extentvii, 131 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-06222010-020102en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06222010-020102/en
dc.identifier.urihttp://hdl.handle.net/10919/43382en
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1988.C378.pdfen
dc.relation.isformatofOCLC# 19257009en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1988.C378en
dc.subject.lcshDesulfurizationen
dc.subject.lcshFlue gases -- Desulfurizationen
dc.titleEvaluation of modified dry limestone process for flue gas desulfurizationen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMaterials Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen
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