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ABSTRACTS
SP&BMHRELATEDENGINEERING
BimonthlyTotalNo.92,No.52009;PublishedonSep.30,2009
(InitialIssueinDec.of1991)
EngineeringCalculationofCriticalVelocityandSettlingVelocityofGranularMaterials
DINGDe2cheng(NanjingSUNUPGranulationEquipmentCo.,Ltd.,Nanjing210041,China)
Abstract: Duringtheengineeringdesignforfluidized2beddryerorcooler,pneumaticdryer,fluidized2bedabsorber,fluidized2bedreac2torandpneumaticconveying,thecriticalvelocityandsettlingvelocityofthegranularmaterialarethemainprocessparameters,whichinvolvemanycalculationformulas,butsuchformulashavesignificantlimitations.Thesecommonlyusedcalculationformulasandcalcu2lationexamplesforthecriticalvelocity,settlingvelocityandoperatingvelocityareoutlined.ItisconsideredthatintervaljudgmentisnotnecessarywhentheengineeringcalculationisdoneusingthePlanovskicorrection.Itappliestoanyoccasionwithabedcourseporosity
ε=0.4～1.0.
Keywords: fluidization+granularmaterial;criticalvelocity;settlingvelocity;engineeringcalculation;suggestion
IndustrialExperimentalStudyofProductionofα2gypsumPowderfromDesulfurized
GypsumthroughLiquidPhaProce1222DONGXiu2qin,ZHAOJian2hua,SONGShu2feng,FULi2e,、MaterialCo.,Ltd.,
Pingyi273305,China;2、GypsumResearchInstituteofopmentCenter,Pingyi273305,China)Abstract: Overseasresearchforprgypsumgypsumthroughliquidphaseprocesshasbeencar2riedoutalongtimeago,thereapplication.Duringactualproduction,byadjustingtheslurrycon2centration,crystalpressure,crystalmodifiertypeanddosing,dewateringmethodanddryingprocessparame2ters,α2gypsumpowderisrfromdesulfurizedgypsum,andtheindicatorsarebetterthanthosedefinedinthehighestlevelα50
α2typehigh2strengthgypsum”approvedin2008,sothatindustrialproductionofα2gypsumpowderaccordingtotheindustrialstandard“
fromdesulfurizedgypsumisrealized.
Keywords: desulfurizedgypsum;liquidphaseprocess;processparameteradjustment;α2typehigh2strengthgypsum;industrialpro2duction
BriefIntroductionofStreamerPlasmaInducedAmmoniaFlueGasDesulphurizationandDenitritionTechnology
12HUXiao2tu,DENGYong2jia(1、GuangdongJ2TECHScienceDevelopmentCo.,Ltd.,Guangzhou510663,China;2、SINOPEC
NanjingDesignInstitute,Nanjing210048,China)
Abstract: Plasmafluegasdesulphurizationtechnologyisasophisticatedtechnologyintheatmosphericfield,andisalsoaninterna2tionalresearchhotspot.Itfullyutilizesthestrongoxidizingpropertyoftheplasmafreeradicalandthechemicalpropertyofammoniaab2sorptiontorealizethedesulphurizationanddenitrition,withbyproductofammoniumfertilizer.Theprinciplesofstreamerdischargede2sulphurizationanddenitrition,processflowofthepilotplant,andtechnologicalfeatures,etc.areoutlined.Itisalsocomparedwithotherfluegasdesulphurizationanddenitritiontechnologiesintermsofperformanceandtechnicaleconomy.Keywords: ammoniaprocessdesulphurizationanddenitrition;streamerdischarge;briefintroduction
CurrentStatusofR&DandDevelopmentProspectforPotassiumandMagnesiumSulfateFertilizer
GUORu2xin(TianjinSodaPlant,Tianjin300450,China)
Abstract: Thehistory,ore2formingprocess,resourcereserve,productstandard,productionenterpriseandproductioncapacityofpotas2siumandmagnesiumsulfatefertilizer(langbeinite,picromerite)isoutlined.TheR&Dprogressforproductionofpotassiumandmagne2siumsulfatefertilizerwithlangbeinite,salinelakebrine,bitternfromsaltmanufacturing,etc.isreviewed.Thedevelopmentprospectofpotassiumandmagnesiumsulfatefertilizerisalsoenvisioned.
Keywords: potassiumandmagnesiumsulfate;fertilizer;langbeinite;salinelakebrine;bitternfromsaltmanufacturing;review
WayoutforYellowPhosphorusIndustryofChina———Turn“Crisis”into“Opportunity”
AdjusttheIndustrialStructureandDevelopCyclicEconomyKUANGGuo2ming(GuizhouChemicalIndustrialAssociation,Guiyang550002,China)
Abstract: Basically,thecurrentyellowphosphorusindustryofChinaisa“diminishing”industryfeaturing“threehighsandonelow”:high2energyconsumption,highmaterialconsumption,highpollution,andlowbenefit.ItisproposedthatthewayoutfortheyellowindustryofChinaistoadjusttheindustrialstructure(includingadjustmentofrawmaterialstructureandtechnologicalstructure),devel2opcycliceconomy,andpromotethecomprehensiveutilizationofresources.Theenergy2savingandemissionreductionbysomeenterpri2