Evaluation of a novel concept for combined NOx and SOx removal

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dc.contributor.authorWeinhart, Niko
dc.contributor.authorHaunstetter, Jürgen
dc.contributor.departmentChalmers tekniska högskola / Institutionen för energi och miljösv
dc.contributor.departmentChalmers University of Technology / Department of Energy and Environmenten
dc.date.accessioned2019-07-03T13:45:32Z
dc.date.available2019-07-03T13:45:32Z
dc.date.issued2015
dc.description.abstractNOx and SOx are major air pollutants. Although there are already several flue gas cleaning methods on the market, research to find more effective and cost efficient measures is necessary. Most of the common measures use reduction for NOx removal and treat NOx and SOx separately. The present work describes a new NOx and SOx removal concept based on oxidation that treats both, simultaneously. Therefore the two main components of the concept, a reactor and an absorber, were modelled with ASPEN PLUS. The reactor, also called oxidizer uses chlorine dioxide as an oxidation agent. For the scrubbing solution in the absorber pure water, nitrous acid and pH control were tested. The reactor simulation model was validated by experimental results of an appropriate test rig. Then the effects on the absorption of different flue gas and absorbent conditions were tested. Afterwards, further process conditions were tested on the complete removal concept. The reactor model shows that the tested residence time and temperature has no effect on the NO conversion, whereas higher residence time increases and higher temperature decreases SO2 conversion in the reactor. The outcome of the scrubber model is that Cl compounds as well as nitrogen oxides get sufficiently absorbed, whereas SO2 cannot be sufficiently removed with reasonable water amounts. By using pH control and HNO2 a positive effect on SOx removal was achievable.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/220188
dc.language.isoeng
dc.setspec.uppsokLifeEarthScience
dc.subjectEnergi
dc.subjectHållbar utveckling
dc.subjectEnergiteknik
dc.subjectEnergy
dc.subjectSustainable Development
dc.subjectEnergy Engineering
dc.titleEvaluation of a novel concept for combined NOx and SOx removal
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmeSustainable energy systems (MPSES), MSc
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