非均相硝化反应器的最佳中试容积梁日忠

科研开发,2000,8(6):5～9SCIENCE&TECHNOLOGYINCHEMICALINDUSTRY:2000-09-25:(1965-),(),,,,、。＊:(IGA8944)＊梁日忠1,李建伟2(1.,　030051;2.,　100029):在5个几何相似的具有双排蛇管的模拟硝化反应器中,测定了不同工况下液液湍流搅拌分散系统的Sauter直径和固液混合系统两相的停留时间分布(RTD)。关联出了Sauter直径与相比、转速、搅拌桨叶直径之间的关系式,得到了固液系统流体流动模型的模型参数。由各参数随硝化反应器容积的变化规律,确定了硝化反应器的最佳中试容积。:硝化反应器;非均相;Sauter直径;停留时间分布;最佳中试容积:TQ053.6　　:A　　:1008-0511(2000)06-0005-05　　、,※※。,。,,;,,,。,,。,,。,、、、。,、,。,。[1]。;,,。[2]。,[3,4]。,(),(,),,。、[5]。5,。,,,Sauter(),;Sauter、、,,。,,,(RTD),,DOI:10.16664/j.cnki.issn1008-0511.2000.06.002,。1　1.1　,、[6]。0.005m3,0.018m3,0.051m3,0.100m30.150m3;1∶1.2。、、、、。1.2　1.2.1　,,,,,。,17min,40min。,10mlNaOH。,。1.2.2　60～100,1050kg/m3,1∶10,1.05,,1200s,1500s,1800s,2400s。RTD;RTDKCl,。2　2.1　2.1.1　SauterdVAM,A,B,[2],-dCB/dτ=KaaCACB(1)Ka,。a,CA、CBAB。A,CA;B。Ka,CA,KaCA=K′(2)a=πd2VAMNVR　(VR;VR=VA+VB)(3)VB=Nπ6d3VAM(N)(4)(3)、(4)a=6dVAMVBVR(5)CB=CB0-CNaOHVNaOHVA2×10VBCB0=0.2036M,CNaOH=0.0251M,CB=0.2036-1.255×10-3VNaOHVAVB(6),NaOH,-dCB/dτ=CNaOHVNaOHVA2×10×1VB×1τ(7):τ—,τ=17min;VA—,m3;VB—,m3;VNaOH—10mlNaOH,ml:-dCB/dτ=7.38×10-5VAVB×VNaOH(8)(1)、(2)、(5)、(6)、(8):dVAM=6K′VBVR(459.8VBVA1VNaOH-2.834)(9)K′[7]。,。K′3.46×10-4。,SauterdVAM:dVAM=2.076×10-3VBVR(459.8VBVA1VNaOH-2.834)(10)2.1.2　SauterSauterdVAM,dVAM。·6·　　　　　　8,dVAMPV(dVAM∝,P-a1V,a1)φ(dVAM∝eλφ,λ、)[8]。,[9]PV=Cρn3d2ρ—,;n—;d—;C—。,dVAM=Keλφ(n3d2)-a1(11)K—。2.2　2.2.1　,,。,、,[10],E(t)=Aexp(-Bt)(12),A=υ1υ01τ,B=υ1υ0VRVR-Vd1τ,υ0,m3/s;υ1,m3/s;E(t),s-1;VR,m3;Vd,m3;t,s;τ,s。2.2.2　(12),lnE(t)=lnA-Bt(13)(、、)(12),(13)AB。(12)E(t),,,,8%,,,。3　3.1　3.1.1　SauterSauter(11),,。:VR=0.150m3,dVAM=401e1.90φ(n3d2)-0.424VR=0.100m3,dVAM=414e1.94φ(n3d2)-0.420VR=0.051m3,dVAM=424e1.90φ(n3d2)-0.401VR=0.018m3,dVAM=498e2.00φ(n3d2)-0.322VR=0.005m3,dVAM=593e1.95φ(n3d2)-0.233:dVAM—Sauter(μm);n—(r/min);d—(m);φ—。3.1.2　,:K=f(VR)lna1=f(VR),1。,K=f(VR)2,,,。,,VRC=0.026m3。VRVRC,KVR。KVR,0.026m3。,lna1=f(VR),VRC=0.028m3。λVR,VRλ。1　K=f(VR)lna1=f(VR)·7·6,.　　　2　BVR(u=3.1m/s)　　VRK、a1、λ,VR=0.028m3。3.2　,,。,υ0≈υ1,A。B,,B,E(t)-t,,B。2BVR,,,VRC,VRVRC,B;VRVRC,BVR,。,VC。VRC,0.034m3,,0.034m3。、,0.034m3。,,,、。。4　、(5、4),2,0.034m3。,,。[　　　][1]　.[M].:,1989.[2]　.[M].:,1986.[3]　.(Ⅱ):[J].,1987,15(1).23～28.[4]　.[J].,1991,19(1):27～32.[5]　.-[J].,1999,7(2):89～92.[6]　,.[M].:,1988.[7]　,.[M].:,1983.227～229.[8]　,.[J].,1989,40(1),118～122.[9]　.[M].,.:,1984.[10]　LiuYouzhi,LiangRizhong.TheFluidFlowModelinNitrationReactor[J].The3rdInternationalSymposiumofPyrotechnicandExplosive(ISPE),1995,210～212.·8·　　　　　　8THEOPTIMUMPILOTVOLUMEINHETEROGENEOUSNITRATIONREACTORLIANGRi-zhong1,LIJian-wei2(1.DepartmentofChemicalEngineering,NorthChinaInstituteofTechnology,Taiyuan030051,China;2.CollegeofChemicalEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:Theaverageliquid-dropdiameter(Sauterdiameter)inliquid-liquidturbulencesystemandresi-dencetimedistribution(RTD)offluidsinsolid-liquidmixingsystemweredeterminedinfivegeometricallysimilarnitrationreactorsinstalleddoublecoilunderdifferentconditions.TheempiricalformulaofSauterdi-ameterandflowmodelofRTDwereproposedandtherelevantparametersweredeterminedbyexperi-ments.Theexperimentalresultsshowthatthereistheoptimumpilotvolumeofthenitrationreactorinhet-erogeneousnitrationreactorscale-up.Keywords:Nitrationreactor;Heterogeneous;Sauterdiameter;Residencetimedistribution;Optimumpilotvolume5　　　　　“GL-5、L-ECC5W/30、L-ESF5W/30、L-HV300#”5,。5、,。,,,。(石明霞)20009。,“”。、。11,、、、、、、、。,,。。·9·6,.