食品级二氧化碳生产工艺

2008,18(6)37100541,,,,,,,,2211,:211MPa-20,CO2;8MPa30,CO2;011MPa-7818,CO2;110MPa0,CO2,21111,8MPa,,21112215MPa,-25-30,-20,,,,,211MPa-20,CO2,,99199%212(1),,,(2),,,50%120%(3),(4),723:1998:[phone]-3204,E-mail:yxr1819@chinahualueng1comCHEMICALENGINEERINGDESIGN2008,18(6)213214:99199%(wt)10ppmH2O10ppmO21ppmN21ppm215,214MPa,,,,-60,5ppm,90%,,(5),,,,,,,-35,1121621611,;,,,21612:,,217(1):();()()(39)822008,18(6)516,517(P/P1018),,,518(),,,1020dB,6611,,,,,,612,:,10%,,,;,70;80%90%613,,,614,,,,20100kPa60180kPa,,,615,,,;:;,;7,,,(2008-07-10)(28),,,,,,3(1)(2),,(2008-10-18)932008,18(6)ABSTRACTSOFCHEMICALENGINEERINGDESIGNABSTRACTSInsistingonScientificDevelopmentofCoalChemicalIndustryPanLianshengTheNewProgressintheProductionTechnologyforNitricAcidinChinaTangWenqian,etal(ChemicalPlanningandDesignInstituteofShandongProvince,Jinan250013)DescribethepresentsituationandthemaintechnicalachievementofnitricacidinChina,especiallyfortheworkinginorderofdomesticindigenousFourinOneunittomakePt,ammoniaandenergyconsumptionpertonnitricacidtoapproachtheimportedunit,andintroducethetechnicalprogressofdual-pressureprocessabroad.KeywordsnitricacidprocesstechnologyunitTheBottleneckProblemanditsSolutiononSupercriticalWaterOxidationTechnologyintheProcessofIndustrializationChenShuhua,etal(SchoolofEnvironmentandchemicalEngineering,DalianUniversity,Dalian116622)Asanenvironmentalprotectiontechnology,supercriticalwateroxidation(SCWO)technologyhasmanyadvantagesinthetreatmentofhazardouspoisonous,refractoryandhyper-concentratedsubstances,anditsapplicationbasementhasbeenformed,thereareindustrialapplicationcasesabroad.ButthecorrosionandscaleofSCWOreactor,theenergyintensityandexpensiveofSCWObaffleitspromotionanddevelopmentinindustrialproductionandbecomethebottle-neckproblemstothecommercialdevelopment.ThisarticlesummariesthecorrosionandscaleofSCWOreactorandthereactionheat,putforwardtherelativemethodstosolvetheproblemsatpresent.Moreover,illustratestheorganizationsandtheirreactortypesofadoptingSCWOtechnologyatpresent.KeywordsSCWOcorrosionscaleenergeticself-sufficiencyApplicationofHigh-ActivityLowTemperatureShiftCatalystsTypeofLSK-821-2XuKai,etal(CollegeofChemistry&ChemicalEngineering,ChinaUniversityofPetroleum,Dongying257061)IntroducetheapplicationoflowtemperatureshiftcatalyststypeofLSK-821-2inhigh-lowtemperatureshiftprocess.Analyzeitspotentialcapacityinenergyconservationandrawmaterialconsumptionreduction.KeywordslowtemperatureshiftcatalystapplicationofcatalystCalculationMethodsofGeometricalSizeforSpiralPlateHeatExchangersWuDongwu(SINOPECGuangzhouPetrochemicalCorporation,Guangzhou510726)Thecalculationmethodsofsemi-circledspiralandoveralldiameteraretheexactandcompletecalculationmethodsforspiralplateheatexchangersanditcanreplacevariousmethodsusedatpresent.Keywordsheatexchangersemi-circledspiralpolarradiusoveralldiameterProbeonRecycleLoopDesignforThermosiphonReboilersLiuChengjun(ChinaPetroleumEngineering&ConstructionCorporationEast-ChinaDesignBranch,Qingdao266071)Probeonrecycleloopdesignforthermosiphonreboilers,includingitsclassificationandcharacteristics,configurationtypeofthetowerbottom,thedeterminationofliquidlevelatbottomandthedimensioncalculationforthedowncomerlinefromtowerbottomtoreboilerandtheriserlinefromthereboilertotowerbottom.KeywordsthermosiphonreboilertypetowerbottomconfigurationliquidleveloftowerbottomdowncomerlineriserlineProductionProcessesofFoodGradeCarbonDioxideYanXiaoru(HualuEngineeringandTechnologyCo.,Ltd.,Xian710054)Introducetheproductionmethods,processcharacteristics,andselectionofequipmenttypeandprocessrouteforfoodgradecarbondioxide.KeywordscarbondioxideprocesshighpressureprocessmediumpressureprocessVerificationMethodsofForceonPressureVesselPipe-nozzleWuHaijun(TianjinJinbinPetrochemicalEquipmentCo.,Ltd.,Tianjin300271)Introducetheforceverificationmethodsofpressurevesselpipe-nozzle,startwiththeconnectionformofthepressurevesselpipe-nozzleandthecommonfailuremodes,putforwardpertinentlytheforceverificationmethodsforpipe-nozzle,analyzetheapplicationscopeandthereliabilityforvariousmethods,putforwardtheeffectivemeasurestoimprovethepipe-nozzleloadingcapacity.Keywordspressurevesselpipe-nozzleforcemethodmeasureProbeonDesignApplicationofFireAccidentAuto-alarmSystemLuoRilang(ChinaNuclearPowerEngineeringCompany,Ltd.,Shenzhen518124)Probeonsomeproblemsinfireaccidentauto-alarmsystemdesign.Analysetheselectionofdetector,installationofmoduleinexplosivearea,thecut-offofnon-firepowersupply,andthesettingofmanualalarmbuttonetc.Keywordshighrooflargespacemoduleinexplosiveareanon-firepowersupplymanualalarmbuttonMethodsofProlongatingServiceLifeandCommonFailureTreatmentforControlValvesWuXiying,etal1