Modeling of Biomass Flow in a Novel Multi-staged Fluidized Bed Concept

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dc.contributor.authorJohansson, Martin
dc.contributor.departmentChalmers tekniska högskola / Institutionen för rymd-, geo- och miljövetenskapsv
dc.contributor.departmentChalmers University of Technology / Department of Space, Earth and Environmenten
dc.date.accessioned2019-07-03T14:59:06Z
dc.date.available2019-07-03T14:59:06Z
dc.date.issued2018
dc.description.abstractA mathematical description of the axial mixing of biomass in bubbling fluidized beds was developed and implemented into an already existing mathematical model. Based on the developed model the performance of novel multi-staged fluidized bed concept was investigated. The novel concept works by inserting a chamber into an already existing unit and in that way introducing two reaction zones that can communicate with each other via a slit at the bottom of the walls delimiting the reaction zones. The implementation of the novel concept enables pyrolysis and char conversion to occur in separate environments. Based on simulations it was shown that the results are very sensitive to the pyrolysis kinetics, why more studies of the kinetics would be of interest. Furthermore, it was shown that novel concept could be controlled by varying the pressure difference between the reaction zones. The fluidization velocity could also be used as a means for control, but for too big slit heights, the novel concept becomes insensitive to changes in fluidization velocity.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/256538
dc.language.isoeng
dc.setspec.uppsokTechnology
dc.subjectEnergi
dc.subjectHållbar utveckling
dc.subjectEnergiteknik
dc.subjectEnergy
dc.subjectSustainable Development
dc.subjectEnergy Engineering
dc.titleModeling of Biomass Flow in a Novel Multi-staged Fluidized Bed Concept
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmeInnovative and sustainable chemical engineering (MPISC), MSc
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