文丘里管及拉法尔管在气力输送系统中的应用

,(,266042):,,,,,:;;;;:TH232:B:1009-1904(2003)06-0014-0511501820,Stephenson,1852,1928,,,,,,2,,,,:(),1,,,,,,2,6,,,,,:[1].[M].:,1982:5761,117118,257268.[2].3[J].,1994,(1):17.[3].[J].,1998,(2):17.:(1963-),,,,;(1969-),,,,(:2003-08-12)41SP&BMHRELATEDENGINEERING2003611,1(a):;,,;,;;,,,:,,,,,[1]2,[23],,,1(b),,,,,,,,,0.06MPa250mm,0.2mm,0.04MPa,1m3/min,0.5mm,3.5m3/min3,[1(c)],,[1],,,4,1(d)2[1],(a),(b),,,,,,2,,,,33,,,,,,[1](1)(),,5120036,13,,,,1/3,(2),,,,(3),1/4(4),,(5),,,:(),,,,,4,,,0.52.5kPa41;2;3;4;5;6;7;8;9,,,,90120s,180,,,,,,,,5,,,61SP&BMHRELATEDENGINEERING200365,,,,6,,,,6:,0.61.2m/s,;,,,,,,,:;;(65mm);;;200;3,(),7,,;p3,,,,,,,7[4]qm=0A22kk-1p00p2p02k-p2p0k+1k(1)p2/p0=0.528,q3m=A2kp002k+1k+12k-2(2):qm,kg/s;p2(),Pa;7120036,1p0(),,Pa;k,k=1.4;0,kg/m3;A2,m2;p3,Pa;q3m,kg/s,0.32MPa(),,,(0.1+0.32)/0.528=0.795MPa(),0.695MPa,0.7MPa0.7MPa,00.25MPa,,8ap2()p0,;bp2p3,;cp2,,q3m8,;,,p2p00,4:,,,,,,,,,,,:[1].[M].:,1998:353372.[2].:20[M].:,1987:230264.[3].[M].:,1994:274315.[4],.[M].:,2001:304312.:(1962-),,,,,,20,3,2(:2003-03-17),,,,,,,,,,()81SP&BMHRELATEDENGINEERING20036StudyontheApplicationofActive&PorousAgentinSSPProductionJINHan2qiang1,TANJian2guo2,WANGGeng2ya2(1NanjingChemicalIndustrialGroupResearchInstitute,Nanjing210048,China;2PhosphateFertilizerFactoryofSINOPECNanjingChemicalIndustrialCo.,Ltd.,Nanjing210035,China)Abstract:Thetestofaddingactive&porousagentintheproductionofSSPisintroduced.Theactive&porousagentiscomprisedofsurfaceactiveagentandinorganicadditive.Commercialtestshowsthatbyaddingthecompoundactive&porousagent,theconver2sionrateisupby3%,theproductpropertiesaresignificantlyimprovedandtheproductcakingissignificantlyminimized.Keywords:SSP;caking;active&porousagent;study;effectDevelopmentandEffectofCesiumCatalystMadeinChinaintheSulfuricAcidProductionbySO2OxidationGUOZhen2bing(KaifengKaihuaGroupCatalystFactory,Kaifeng475002,China)Abstract:Inviewofthehighlight2offtemperatureandshortservicelifeofalumcatalystmadeinChinawhichisusedintheproduc2tionofsulfuricacid,thedevelopmentofcesiumcatalystusingcesiumsaltassolubilitypromoterandceriumsaltasadditiveisproposed.KCs-3cesiumcatalystisrecommendedinthecommercialtest,andtheresultshowsthatitslight2offtemperatureislow,theworkingtemperaturerangeiswide,thefirst2stageconversionrateisup510percentpointscomparedwithpreviousfigure.However,thepro2ductioncostisrelativelyhigher,andtheservicelifeistobefurtherinvestigated.Keywords:sulfuricacidproduction;alumcatalyst+cesium;development;test;effectResearchoftheProductionProcessofNewTitaniumSlagSolidBricksPANBao2feng,TANKe2feng(MaterialScienceandEngineeringInstituteofSouthwestScienceandTechnologUniversity,Mianyang621002,China)Abstract:ThemicrostructureoftitaniumslagfromPanzhihuaSteelcompany,andtherequirementsofusingitasarawmaterialforsolidbrickproductionaredescribed.Theratioofcementincementationmaterialandthecomposingproportionofaggregatematerialareresearched,andtheimpactofvariousfactorsonthebrickstrengthisdiscussed.Throughtestandeconomicanalysis,itisdeterminedthattheratioofce2mentincementationmaterialis20%,theratioofwatertocementationmaterialis0.44,theratioofwater2hardeningslagtoslow2cooledslagis11,moldingpressureis800kN,allcuringtimeis5d.Theproducedbrickfeatureslowcostandhighstrength,andisincompliancewiththestrengthrequirementsbythestateforbuildingstandardbricks.Themarketapplicationispromising.Keywords:titaniumslag;brickmaking;cementationmaterial;aggregatematerial;formula;processparameter;researchApplicationofStatisticsinPackagingandWeighingSystemofChemicalPowderandGranuleProductsDONGNing2ning,XIAOFeng(NanjingChemicalIndustrialGroupDesignInstitute,Nanjing210048,China)Abstract:Theapplicationofstatisticsinpackagingandweighingsystemofchemicalpowderandgranuleproducts,eitherinthere2spectofprofundityorextensiveness,isinthepreliminarystageatpresent.Inallusiontoaccuracyprobleminthepackagingandweigh2ingsystemofchemicalpowderandgranuleandwiththetheoryandmethodofstatistics,theanalysisanddeductionmethodbasedonsamplingresultisputforward,whichinsomeextenthasreferencefortheselectionofbaggingmachineandinspectionofestablishmentofweighingdeviation.Theestablishmentofweighingdeviationmathematicalmodelofpackagingsystemandbaggingmachine,issug2gestedinordertopromotethetheoryofpackagingandweighingforpowderandgranuleproductstoahigherlevel.Keywords:powderandgranuleproducts;packagingandweighing;averagevalue;standarddeviationApplicationofVenturiandLAVALPipeinPneumaticConveyingSystemLIYong,CHENShu2xin(QingdaoScience&TechnologyUniversity,Qingdao266042,China)Abstract:Theperformances,characteristicsandapplicationsofvariousfeedingunitsofpneumaticconveyingsystemarecompared,focusingonthepracticalproblemofconventionalVenturifeeder.ThestructurecharacterandusageoftheseveralnewVenturifeeders,whichareappliedbothathomeandabroad,areintroduced.Thecombinationoftwokindsoffeedingunits,thattheVenturifeederiscombinedwithcontinuousmechanicalrotatingfeeder,canimprovetheinherentproblemswhentheyarerespectivelyapplied.TheLAVALpipeincontrollingflowcapacityandpressureindensephasepneumaticconveyingsystemi