Experimental investigation and modelling of sodium scale dissolution with black liquor - A pilot plant investigation

Visa enkel post
dc.contributor.authorPettersson, Martin
dc.contributor.authorÖhrman, Karin
dc.contributor.departmentChalmers tekniska högskola / Institutionen för energi och miljösv
dc.contributor.departmentChalmers University of Technology / Department of Energy and Environmenten
dc.date.accessioned2019-07-03T13:14:43Z
dc.date.available2019-07-03T13:14:43Z
dc.date.issued2013
dc.description.abstractIn this thesis the dissolution of sodium scales with black liquor has been investigated. The experimental part was carried out at a falling film pilot plant evaporator at the division of Heat and Power Technology at Chalmers University of Technology. In order to study the dissolution, a scaling layer was build up by evaporation of a saline solution which was then washed off by black liquor at different temperatures and flow rates. During washing the outgoing dry solid content of the wash liquid was measured along with the scaling layer thickness. The dissolution rate constant was found to be lower than in previous research carried out by dissolution with water at corresponding temperature and flow rate. The dissolution was dependant on the concentration difference between the saturation concentration and the concentration of the bulk liquid, the flow rate and the temperature of the washing liquid. The dissolution seems to be decreasing with increasing viscosity, but since temperature affects the viscosity, the solubility and the dissolution rate constant the effect of only the viscosity cannot be confirmed. In contrast to previous work the results suggests that the amount of wash liquid needed to dissolve a given amount of scales decreased with increasing temperature and flow which suggest that there might be beneficial to wash at a high wetting degree and at a high temperature.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/182319
dc.language.isoeng
dc.setspec.uppsokLifeEarthScience
dc.subjectEnergi
dc.subjectHållbar utveckling
dc.subjectKemiteknik
dc.subjectEnergy
dc.subjectSustainable Development
dc.subjectChemical Engineering
dc.titleExperimental investigation and modelling of sodium scale dissolution with black liquor - A pilot plant investigation
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmeInnovative and sustainable chemical engineering (MPISC), MSc
Ladda ner
Original bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
182319.pdf
Storlek:
908.28 KB
Format:
Adobe Portable Document Format
Beskrivning:
Fulltext
Ladda ner
Samling
Examensarbeten för masterexamen