Vapor-liquid equilibrium of monoethanolamine/piperazine/water at 35-70°C

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dc.contributor.advisorRochelle, Gary T.en
dc.creatorMcLees, John Arthuren
dc.date.accessioned2015-09-16T20:54:21Zen
dc.date.available2015-09-16T20:54:21Zen
dc.date.issued2006-05en
dc.descriptiontexten
dc.description.abstractThe equilibrium partial pressures of monoethanolamine (MEA), piperazine (PZ), and water were measured in a stirred reactor with a recirculating vapor phase by FTIR analysis at 35 - 70 Celsius degrees. MEA and PZ volatility were measured in two separate pilot plant campaigns to capture CO₂ from flue gas under a range of absorber conditions. The laboratory data were regressed to determine NRTL binary interaction parameters that predicted the experimental points within 10 - 20%. It was proven that MEA volatility (0.45<MEA<0.55) is a viable concern in CO₂ capture processes from an economic, environmental, and overall health perspective. PZ, on the other hand, was not observed to be as volatile (0.06<PZ<0.08) as predicted by previous models and therefore volatility loss would not be a significant drawback for using it as a CO₂ capture solvent. Pilot plant results show an average MEA gas phase concentration at the absorber outlet to be approximately 45 ppm while the PZ concentrations averaged 6 ppm and 8 ppm at the absorber inlet and outlet, respectively.en
dc.description.departmentChemical Engineeringen
dc.format.mediumelectronicen
dc.identifier.urihttp://hdl.handle.net/2152/31337en
dc.language.isoengen
dc.relation.ispartofUT Electronic Theses and Dissertationsen
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en
dc.rights.restrictionRestricteden
dc.subjectMonoethanolamineen
dc.subjectPiperazineen
dc.subjectVapor-liquid equilibriumen
dc.titleVapor-liquid equilibrium of monoethanolamine/piperazine/water at 35-70°Cen
dc.typeThesisen
dc.type.genreThesisen
thesis.degree.departmentChemical Engineeringen
thesis.degree.disciplineChemical Engineeringen
thesis.degree.grantorThe University of Texas at Austinen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Scienceen

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