过磷酸钙生产中含氟污水处理新探唐晓莲

唐晓莲,李国平(,　210048)　　　:针对过磷酸钙生产排放的含氟废水中氟的质量浓度大多高于10mg/L,讨论了采用CaCO3+CaO复合除氟剂处理含氟污水的工艺问题。研究了pH值等主要因素对污水中氟的质量浓度的影响,提出了终点的pH值为6～9、污水的总停留时间为30～45min时,处理后废水中氟的质量浓度可降至7.0～8.5mg/L、悬浮物含量为50～60mg/L,并对该技术的技术经济作了探析。:污水处理+除氟;过磷酸钙生产;工艺;探讨:TQ442.110.9　　　　　　　　　　　　:B:1009-1904(2002)06-0044-031　,,。。20～30mg/L,《》GB15580-95(10mg/L)。10mg/L,。,pH,,,。2　CaCO3CaO,Ca2+,SiF2-6F-CaF2,:CaCO3+H2SiF6CaSiF6+H2O+CO2←CaO+H2OCa(OH)2Ca(OH)2+2H+Ca2++2H2OSiF2-6+Ca2+CaSiF6Ca2++2F-CaF2↑CaSiF6+2Ca(OH)23CaF2↑+SiO2+2H2O—,,,。3　,。500mL,,60min,pH;,PE;,pH,、。1。1　GB15580-95pH/117～86～9(25g/L)ρ(F)/mg·L-13000～50007.0～8.5≤10.0/mg·L-16000～1000050～60≤703.1　pHpH1。1:pH7.5,pH,pH7.5;pH,,pH10,10mg/L;pH,,pH11.0～11.55mg/L;,pH。GB15580-95pH6～9。1,。·44·硫磷设计与粉体工程SP&BMHRELATEDENGINEERING　　　　　　　　　　2002年第6期DOI:10.16341/j.cnki.spbmh.2002.06.0141　pH3.2　,,,,;,。30～45min,,,,。3.3　,,,。,CaF2,,。,,,。150～180r/min,,。1,50L,pH7～8,7.0～8.5mg/L(,Ca2+,)。4　1,。(),CaCO3,pH4～6、15～20min;CaO,pH7～8、30～45min(0.22mm);,。2。,CaCO3,CaO,pH7～8,。,,。。,,。,。2,。2　5　5.1　100kt,,2,3。2　()/CaCO381kg2.34CaO0.9kg0.182kW·h1.000.67(10a)1.00(3.5%)0.355.545.2　《》(1999),12,5.54(2),3,19。,·45·2002年第6期　　　　　　　　唐晓莲,等.过磷酸钙生产中含氟污水处理新探蒋　炜(,　100101)　　　:为在工程项目建设中进一步推行国际型工程公司的工作程序和方法,结合大型石化合资项目投资估算的编制,分析了投资费用划分、计算方法、价格来源、编制程序、条件关系和审查程序等与国内的不同之处,以提高投资估算的精确度。:工程费+编制;工程经济;投资估算+合资项目;分析:F403.7　　　　　　　　　　　　　　:B:1009-1904(2002)06-0046-03　　(CSPC)(),800kt/a11、、。,。。1　。、、。、、。3　100kt/a/10.3　　11.720.141.826.0110.0113.036.514.011.8111.015.0、5.018.0、、8.07.8100.0,,GB15580-95。,,。6　1、CaCO3、CaO,pH6～9,30～45min。7.0～8.5mg/L,50～60mg/L,GB15580-95。2、、,100kt/a,19,。,。:(1968-),,,,。(:2002-08-02)·46·硫磷设计与粉体工程SP&BMHRELATEDENGINEERING　　　　　　　　　　2002年第6期DesignSumming-upforPorductHandlingSystemofUreaRevampEngineeringofUrumchiFertilizerFactoryZHANGYe(SINOPECLanzhouDesignInstitute,Lanzhou730060,China)Abstract:　Inrecentyears,inordertobroadenandoccupythedomesticfertilizermarket,manyfertilizerfactorieshavebeencontinu-ouslyremodelingtheirproductcategories,amongwhichlargegranuleureaisoneofthem.Theproductionsofgreatgranuleureaareof-tenrevampedfromoriginalfertilizerplants.Limitedbyinvestmentandland,generallynewproducthandingsystemsarenotallowedtobebuilt.Theurearevampprojectfromoneoftheplantsofurumchipetrochemicalcompanyhasbeenintroducedindetail,wherethelargegranuleureaproducthandlingsystemisrevampedfromoriginalNo.1andNo.2ureaproducthandlingsystems,andisingoodoperationcondition.Thesuccessofthisrevampprojectwillgivecertainassistancefordesignofsimilarengineeringproject.Keywords:　granuleurea+largegranule+smallgranule;producthandlingsystem;technicalrevamp;designTheOperationSummaryofthe1000t/dand600t/dSulfuricAcidPlantBasedonSulfurYUANYa-fei(SuzhouFineChemicalGroupCo.,Ltd.,Suzhou215001,China)Abstract:　Theon-streamrateofthesulfuricacidplantofSulfurinSuzhouFineChemicalGroupCo.,Ltd.hasreached99.6%.Inthearticleitsummarizestheexperiencesintermsofrawmaterials,plantdesign,equipmentandsystemoperationandproductionman-agement.Itthinksthatthequalityoftherawmaterial,designandengineeringqualityshallbewellcontrolled.Andthroughtheeffec-tivemanagement,itcansolvetheproblemsduringtheproductionperiodinatimelymannerandgetspeopleaccustomedtothesystemforthepurposeofstableandefficientproduction.Thesuggestionfortheautomaticloopisalsoputforwardinthearticle.Keywords:　sulfuricacidproduction+sulfur;operation;summaryTheApplicationoftheAmorphousCastRefractoryMaterialsinFluidizedBedFurnaceinOurCompanyLIUChang-jin(KaifengKaihuaGroupCo.,Ltd.,Kaifeng475002,China)Abstract:　Inthesulfuricacidproduction,therefractoryliningmaterialsinthefluidizedbedfurnaceislinedwiththefirebrick,whichisdifficultforconstructionandmaintenance,anditscostishigh.Throughtheperformancetestofamorphouscastrefractorymaterialsandonthebasisofthesuccessfuluseinthefurnacearchroofwiththeamorphouscasthighaluminumrefractorymaterials,itfurthersuccessfullyusesitintheinsideliningoffluidizedbedfurnace.Thearticleintroducesthedifferentconstructionmethodsforarchroofandinsideliningofthefurnacewithamorphouscastrefractorymaterials.Andthistechnologyisreliableandadvancedandeconomicwithlowinvestmentandhasabrightprospectforutilization.Keywords:　fluidizedbedfurnace+lining;refractorymaterials+amorphous;construction;utilizationTheProductionofSodiumTripolyphosphate(STPP)withDifferentApparentDensityGEBing(HubeiXiangfanChemicalIndustryFactory,Xiangfan441002,China)Abstract:　TherearemanyfactorsthatinfluencetheapparentdensityofSTPP.Thisarticleanalyzestherelativefactorsofthediffer-entapparentdensitySTPPbytherelativemicromeriticstheoryndatomizationanalysis.Throughtheexperiment,itproducesSTPPwiththeapparentdensityfrom0.377g/cm3to0.772g/cm3byonesteppolymerizationprocessintherotarykiln,andsomeproblemsshouldbepaidattentiontoduringtheproductionperiod.Keywords:　STPP;apparentdensity;production;controlTheNewExplorationtotheFluorineContainingWasteWaterTreatmentMethodoftheCalciumSuperphospatePlantTANGXiao-lian,LIGuo-ping(EducationInstituteofNanjingChemicalIndustryCo.,Ltd.,Nanjing210048,China)Abstract:　Themassconcentrationofmostfluorinecontainingwastewaterdischargedfromthecalciumsuperphosphateand