管壳式换热器安全阀最大泄放量的计算

舒捷1,吕国林2(1,210048;2,210048):采用安全泄放装置是防止容器超压发生爆炸最有效的方法运用流体在管道内作绝热流动的理论,结合气体膨胀因数,推导出一种更为严密的计算管壳式换热器安全阀泄放量的方法,其计算结果的精确度较高:安全阀;泄放量;计算;探讨:TK172:B:1009-1904(2003)04-0008-051,56(GB150-1998),,,API52056,,,,4411,,,:2HS-+2O2S2O2-3+H2O(2)S2O2-3+2O2+2OH-2SO2-4+H2O(3)(2),1kg1kg,313m3,(10%),,70e,5,,,DCSPLC,PLCPLCPLCPC,pH,,,(下转第18页)#8#硫磷设计与粉体工程SP&BMHRELATEDENGINEERING2003年第4期,2,1,,,,,,2,,,,,,,,,m*,,p*o12,Darcy-Weisbach,$pf$pf=fLdQ2u2(1)f,CFColebrook:1f=-2logE/d3.7+2.51Ref(2),,,(2)f=2logE3.7d-2(3),,,,$p=K12QimA2(4),:,K151.3K1/2(%);K155%;1%,,(4),,Crane(Y)1969Crane,$p=K12QimYA2(5)Crane,Y(6):$p/pi=KN2i/Y2(6),N=Qu22p1/2,#9#2003年第4期舒捷,等1管壳式换热器安全阀最大泄放量的计算N=mA12Qp(7)(5),56,,1000,1000:p1Ma11+C-12Ma211/2=p2Ma21+C-12Ma221/2(8)(),Ma=u/cc=(CRT)1/2,Ma=u/(CRT)1/2pV=nRTV=m/Q,N=Ma(C/2)1/2popi=NiNoCC-1+N2iCC-1+N2o(9)Y(6),po/pi,Y=KN2i1-NiNoCC-1+N2iCC-1+N2o(10)StreeterWylie197556(6),K=12N2i-12N2o-C+12Cln1N2i+C-1C1N2o+C-1C(11),(c),Ma*o=1,No*=(C/2)1/2,(11),Ni*KK=12Ni*2-1C-C+12Cln1Ni*2+C-1CC+1C(12)(12),Ni*CK,K,(12)N*iN*i,K,Ni*,C33KN*iN*i(7),m*m*m*=N*iA2piQi(13),KN*iN*o=(C/2)1/2(10),Y*(6),$p*$p$p*,,2m*;$p$p*,Y,:$p$p*=NiYN*iY*2(14)(14)(10)(11),NoNi,Y$pKC,NoNiY$pKCK,Y$p/$p*,44,$p*$pKC,Y(5),,3,:#10#硫磷设计与粉体工程SP&BMHRELATEDENGINEERING2003年第4期4Y$p/$p*1,$p,API520,$p=pi-1.1ps;2K;3$p*,,(12)N*i,N*im*;,$p*,$pKC,4Y,(5)m4mm*24,C=1.4,pi1MPa,Q=9.29kg/m3ps0.6MPa3m20mmSCH40(26.9mm@2.87mm)1$p=1.0-0.6@1.1=0.34MPa=3.4@105Pa2E=0.2mm,di=21mm,D=27mm,f=2logE3.7di-2=0.037K=Ko+Ki+fL/D=1.0+0.5+0.037@3/0.027=5.6133N*i=0.247N*i=0.247,N*o=(1.4/2)1/2=0.837,K=5.61(10):Y*=5.61@0.24721-0.2470.8371.41.4-1+0.24721.41.4-1+0.8372=0.685(6):$p*=1.0@106@5.61@0.24720.6852=7.29@105Pa$p/$p*=0.466,4$p/$p*=0.466,K=5.61,4Y,(10)(11)(14)Y=0.875(5):m=0.875@14@0.0212P2@3.4@105@9.295.61=32.45kg/s=1158kg/h,2316kg/h556,Gg=246.3@104di2($pQg)0.5=2.463@106@0.0212@(0.34@9.29)0.5=1930kg/h2Gg,3860kg/h,60%5,,,,A))),m2;c))),m/s;cp))),J/(kg#K);cV))),J/(kg#K);d))),m;D))),m;f))),1;Gg))),kg/h;K))),1;Ki)))(Ki=1),1;Ko)))(Ko=0.5),1;L))),m;m))),kg/s;m*))),kg/s;Ma))),1;Ma*))),1;n))),mol;#11#2003年第4期舒捷,等1管壳式换热器安全阀最大泄放量的计算NPK汪根华(,210048):介绍了尿基NPK生产工艺及特点,针对以熔融尿素为原料,采用半料浆团粒法造粒生产尿基NPK装置在运行中出现的问题,结合熔融尿素和尿基NPK的物化特性进行分析,提出解决这些问题的相应对策,并强调了严格操作管理对装置长周期满负荷运行的重要性:尿基复合肥+生产;工艺;操作控制;工艺参数;对策:TQ4441506:B:1009-1904(2003)04-0012-051,)))60%,90%,80%,NPK,NPK(),(),NPK,,,,2NPK211,1团粒法造粒流程MAP,,2半料浆团粒法造粒流程,MAP3料浆法造粒流程,,,4双料浆造粒流程N))),1;N*))),1;Ni))),1;N*i))),1;No))),1;N*o))),1;p))),Pa;pi))),Pa;po))),Pa;ps))),Pa;$p))),Pa;$p*))),Pa;$pf))),Pa;R))),J/(mol#K);Re))),1;T))),K;u))),m/s;Y))),1;Y*))),1;C)))(C=cp/cV),1;E))),m;L))),Pa#s;Q))),kg/m3;Qg))),kg/m3;Qi))),kg/m3:1(1968-),,,,;2(1969-),,,,(:2003-04-10)#12#硫磷设计与粉体工程SP&BMHRELATEDENGINEERING2003年第4期DesignAnalysisfor330kt/aSulfur-basedSulfuricAcidPlantXUZheng-mei(NanjingChemicalIndustrialGroupDesignInstitute,Nanjing210048,China)Abstract:The330kt/a(Yunnan)isanothermodernandlargesulfur-basedsulfuricacidplantdevelopedanddesignedbyNanjingChemicalIndustrial(Group)DesignInstitute.Theprocessflowandtechnicalfeaturesoftheplantisintroducedanditisindicatedthatnewequipmentandnewmaterialsareusedintheplant.Centraltubetypestainlesssteelconverter,lowdryabsorptioncolumnandturbine-drivenprimarybloweraresynchronouslyusedforthefirsttimeamonglargedomesticsulfur-basedsulfuricacidplants.Keywords:sulfuricacidproduction+sulfur;process;equipment;technicalfeature;design;analysisAnalysisforFireProtectionDesignofSulfurWarehouseLIUYan(NanjingChemicalIndustrialGroupDesignInstitute,Nanjing210048,China)Abstract:Sulfurisaninflammablesubstancewithstrongchemicalactivitywhichmayleadtospontaneouscombustionundercertainconditions.Therefore,fireprotectionduringsulfurstorageshouldbepaidattentionto.Withanexplosionaccidenthappenedinasu-lfurwarehouseofHu.nanAluminumAlloyWorks,thecauseoffireinthesulfurwarehouseandhighlightsoffireprotectiondesignforsulfurwarehousesareanalyzed.Itisindicatedthatitisnecessarytostrengthenfireprotectionmanagementforsulfurwarehousessoastofundamentallyeliminatefireaccidentsinsulfurwarehouses.Keywords:sulfurwarehouse;fireprotection;design;analysisStudyofProcessDesignforGeothermalWaterTreatmentLUXiao-bin(JiangsuIndustrialandCivilArchitecturalDesignInstitute,Nanjing210008,China)Abstract:Inordertosufficientlyutilizetheamplegeothermalwaterresource,geothermalwaterisaccordinglytreatedasperitsspe-cificapplicationrequirements.Theprocessesofironremovalwiththecombinationoftwo-stagealkalizationandaeration,desulfuriza-tionwithozoneandfluorineremovalthroughactivatedbauxiteadsorptionisintroduced,whichwillachieveironremovalrateover85%,fluorineremovalrateover92%andsulfideremovalratenotlessthan90%.Thetreatedwaterqualitymeetsrelativestandards.Keywords:geothermalwater;ironremoval+fluorineremoval+desulfurization;removalrate;process;designCalculationofMaximumRelievingCapacityofSafetyValveonTube&ShellHeatExchangerSHUJie1,LVGuo-lin2(1NanjingChemicalIndustrialGroupDesignInstitute,Nanjing210048,China;2YPCDesignEngineeringCo.,Ltd.,Nanjing210048,China)Abstract:Safetyreliefdeviceisthemosteffectivewaytopreventvesselexplosionduetoexcessivepressure.Usi