活性焦脫硫脫硝反應(yīng)器中非球形顆粒流動特性的研究.pdf

1、東南大學(xué)博士學(xué)位論文活性焦脫硫脫硝反應(yīng)器中非球形顆粒流動特性的研究姓名：陶賀申請學(xué)位級別：博士專業(yè)：環(huán)境工程指導(dǎo)教師：金保昇20101228AbstractS02andNOxa旭twoimportantairpollutionsubstancesItishardworktocontroltheiremissionIthaskeptattentionofthedesulphurizationanddenitrificationbyacti

2、vecokeinthemovingbedAlthoughtherearcmanystudiesaboutthedesulphutizationanddenitriflcationbyactivecoke，itstillnotreachesthebestresultsBecausethedesignandoptimizeofthemovingbedreactorisnotsolvedasadifficultproblemSoitissig

3、nificanttomastertheflowcharacterizersofnonsphericalparticleflowinginthemovingbedAvisualizationmovingbedexperimentsystemwasbuiltThehighresolutiondigitalimageacquisitionandprocessingandthetrag七rparticletechnologywereusedte

4、searchtheflowcharacteristicofsphericalandnonsphericalparticlesneflowpatterndischargerate，themeanparticleveloci夠andtheconcentrationoftracerparticlesarcgainedMeanwhile，theparticleflowcharacteristicsofparticleflowinmovingbe

5、dwithinterobstructionAthroedimensionalhopperconsUuctⅨ!byPlexiglasforconvenientviewingwasusedinthisstudyFlowbehaviorsofspherical／non—sphericalparticlesinthemovingbedwerestudiedexperimentallyTheflowpatterndischargerateandm

6、eanvelocitydistributionweregainedbasedonthevisualobservationandparticle仃aceftechniqueTheflowcharacteristicsofnonsphericalparticlesweremasteredThethr∞dimensionaiconstructionmethodsofhomogeneousandmixingnonsphericalsuchasc

7、ornshapedellipsoidal，cylinderandcornmixtureofellipsoidal，ellipsoidaimixtureofcylindercommixtureofcylinderwereestablishedThecontactdetectionofthesehomogeneousandmixingnonsphericalWasanalysisAccordingtothestudiesthecontact

8、ofnonsphericalisconvertedtothecontactofspherical—sphericalandspherical—particlesMeanwhile，theforceandmotionequationa陀establishedAndthesimulationresultWasvaiidatedbytheexperimentAndtheoptimumsphericalnumbersisalsostudiedt

9、oensuretheminimumcomputingtimeandthebestcomputingresultsThroughthediscreteelementmethodofnonsphericalparticles，themacroflowcharacteristicsofhomogeneousandmixingparticleswereinvestigatedThemassflowrate，flowpatternpressure

10、distributionandvelocitydistributionofhomogeneousandmixingparticles、析廿ldifferentproperty(suchasparticleparticleslidingfrictioncoefficientparticlewailslidingfrictioncoefficientrollingfrictioncoefficientcoefficientrestituti

11、onparticledensityparticlediameterandparticleshape)weregainedAlsothemacroflowcharacteristicsofparticlesflowindifferentmovingbed(differentoutletsize，differentangle)weregainedAndthemacroflowcharacteristicsofmixingparticlesw

12、erealsoresearchedThroughthediscreteelementmethodofnonsphericalparticles，theflowcharacteristicsofparticlescalesofwerestudiedmprobabilitydensitydistributions，voidagevarianceofthehomogeneousandmixingparticlesflowcharacteris