第37卷第2期2019年2月
RenewableEnergyResources
可再生能源
Vol.37No.2Feb.2019
活性污泥混合木屑制备生物质燃料及其
燃烧特性的研究
林浚铭1袁吴小龙2袁吴璐超1袁黎
渊1.摘要院曰尧遥曰袁袁310058曰2.尧3袁袁袁曰炜1袁官宝红1尧袁3袁袁311600冤遥曰袁遥院15%~20%关键词院曰曰中图分类号院TK6曰S216.2文献标志码院A文章编号院1671-5292渊2019冤02-0159-07
0引言4袁袁尧袁尧遥2015叶曳2017袁202090%遥遥曰尧袁袁尧袁5844~[1]遥尧50%冤[7]袁[8][9][2]袁袁渊尧袁遥渊袁遥
袁遥[3]袁[4]40%~[5]袁[6]60%~90%冤遥遥遥野袁曳冶冤袁曰遥19303kJ/kg袁尧袁袁遥
袁袁遥袁渊DB11/T541-2008冤尧袁遥
尧叶渊收稿日期院2018-03-06遥
基金项目院渊2016YFB0301800冤遥通讯作者院渊1968-冤袁袁袁袁遥E-mail院guanbaohong@zju.edu.cn
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11.1材料与方法
材料
袁遥渊袁冤1遥
Table1Proximate表1analyses原料的工业分析与热值
andcalorificvalueofmaterials
/%
/kJ窑kg-11.0588.10.311672270.32
26.27
3.41
3487
1.21.2.1方法
袁0.5mm袁FYS-15G遥15t袁渊冤遥0~1010smm袁50mm遥袁1.0g袁s袁1.2.2袁遥30院袁3d袁袁3袁3渊遥1.0g/cm3D臆25mm冤袁袁遥
院2m袁5袁5袁3袁3遥袁95%遥
益2h院10mg渊10530~900冤益袁袁STA409PC20益/min袁N2O220mL/min遥
院1.000g窑160窑MTZW-A4遥袁6院0.150gmL100尧2mL袁mL0.453滋mmL袁袁袁AA6300遥[10]遥Ti院TG/DTG98%Th院2遥2.1结果与讨论
2.1.1生物质燃料成型工艺参数优化袁15%尧50%袁1遥
1021.10991.05961.00
93
900.9587
0.90
84
0.8550
60
7080/MPa
90100
110
0.80
图1
不同压力条件下成型生物质燃料的briquetteFig.1Shatter抗破碎强度和松弛密度
1biomassresistancefuelatdifferentandrelaxedmoldingdensitypressure
of80MPa袁遥袁50MPa袁袁袁遥袁袁遥80MPa
袁2.1.299.84%1.00g/cm3袁遥袁袁
林浚铭袁等活性污泥混合木屑制备生物质燃料及其燃烧特性的研究
袁袁[11]袁遥袁袁曰袁袁袁袁
遥80MPa尧50%袁2遥
1001.1
901.0800.970600.8500.7
40
0.65
10
0.5
15/%
20
25
图2
不同含水率条件下成型生物质燃料的
Fig.2Shatter抗破碎强度和松弛密度
biomassresistancefuelatdifferentandrelaxedmoisturedensitycontent
ofbriquette
2袁20%袁袁99.27%袁98.22%袁
袁15%1.00袁1.05g/cm3袁袁25%袁遥袁2.1.3遥袁袁袁袁袁袁遥80MPa袁15%袁3遥3袁遥袁袁遥40%袁袁40%100.0遥
袁袁99.61.7599.21.5098.81.2598.41.0098.0
0
20
0.75
4060/%
80100
图3不同活性污泥占比条件下成型生物质燃料的
2.1.4briquetteFig.3biomassShatter抗破碎强度和松弛密度
resistancefuelatdifferentandrelaxedactivateddensitysludgeof
ratio
袁遥院60袁70袁80MPa曰80%曰10%袁15%袁20%曰3L40%袁60%袁9渊34冤遥袁32遥
袁Table2表The2results正交试验设计及结果
oforthogonalexperiment
1MPa10%%
g/cm32601540%0.81360206079.53460108092.2791.621.06570156091.091.22670208098.491.02770104093.481.32880158096.340.939
8080
20
4060
97.071.29.11
0.971.11
袁
3遥袁袁袁>>曰袁袁袁袁>
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>遥
Table表33Variance抗破碎强度和松弛密度的方差分析analysisrelaxeddensity
ofshatterresistanceand
FF30.942121.000019.563116.333312.1097
344.3333
2.22.2.1生物质燃料的燃烧特性TG-DTGTG-DTG4遥
10095090-0.385-0.680-0.975-1.2
70
200
400/益
600800
-1.5
Fig.4图4TG活性污泥燃烧的andDTGcurvesofTG-DTGactivated曲线sludge
4袁3袁袁渊40~180益冤尧曰渊180~660益冤遥袁袁尧尧袁4袁CaO袁益冤袁遥[12]遥渊660~740CaO袁CaOCa渊OH冤袁2袁Ca渊OH冤2CO2CaCOCa渊OH冤32袁877益CaCOCO2CaCO33CaO袁遥Ca渊OH冤677~袁2窑162窑
403~480袁605~7001.04%袁[13]Ca遥CaCO益袁3袁92.0%袁CaCO32.59%曰Ca渊OH冤袁Ca渊OH冤22.03%袁1.92%袁660~740益2袁CaAl遥袁2渊CO袁3冤3袁遥
TG-DTG5遥
10008060-440-820
-12
100200300400500/益
600700
800900
-16
Fig.5图5TG木屑燃烧的andDTGcurvesTG-DTGofsawdust
曲线袁5袁3益冤袁渊40~180曰益冤渊180~39013.8%/min袁330袁益遥1.38%/min袁袁
袁袁袁遥尧遥渊390~495益冤遥袁遥袁袁遥
DTG6遥6TG-院袁林浚铭袁等活性污泥混合木屑制备生物质燃料及其燃烧特性的研究
100806040200
100200300400500600700
/益
100%80%60%40%20%0%800900
0-3-6-9-12-15
图6不同活性污泥占比的生物质燃料的TG-DTG曲线
Fig.6TGandDTGcurvesforbriquettebiomassfuelunderdifferentactivatedsludgeratio
渊a冤TG100200300400500600700
/益
引100%80%60%40%20%0%
800900
渊b冤DTG渊40~180益冤曰袁渊180~390益冤100%322益332益袁袁袁遥~100%袁DTG曰40%袁袁益
Ti
袁袁袁袁80%0%袁60%袁
2.2.2%
100806040200
表4成型生物质燃料的燃烧特性参数
Table4Combustioncharacteristicsofbriquettebiomassfuel
益
Th
5875415275094473
C10-5%窑min窑K2
2.224.926.8812.9216.149.66
TG-TG-DTG尧尧渊4冤遥
渊0袁遥袁袁袁冤[14]遥袁246283290295298298
SN10-7%2窑min2窑K3
0.761.822.613.825.226.81
尧298益袁袁遥246益袁4袁渊283~298益冤遥[15]遥遥袁袁袁遥袁袁袁尧袁尧袁CaO袁袁窑163窑
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遥4袁袁袁遥袁袁袁C袁袁C=渊dw/dt冤max/T遥i2遥4袁袁袁袁遥3.37渊1冤袁10袁袁遥袁袁遥袁SNSN=渊dw/dt冤max窑渊dw/dt冤mean/渊Ti2窑Th冤遥袁袁袁遥袁袁3结论
遥袁T541-2008冤袁叶遥曳渊DB11/袁淤遥
尧遥袁80MPa袁20%遥40豫袁15%~于曰袁袁袁遥袁袁遥
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尧盂尧尧袁3曰袁尧尧3遥袁尧40%尧曰袁榆遥
袁袁袁袁遥袁袁遥
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76.活性污泥混合木屑制备生物质燃料及其燃烧特性的研究
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袁
Biomassfuelpreparedbyactivatedsludgemixedsawdustand
itscombustioncharacteristics
渊1.DepartmentofEnvironmentalEngineering袁ZheJiangUniversity袁Hangzhou310058袁China曰2.JiandeWaterServiceCo.Ltd.袁Hangzhou311600袁China冤
LinJunming1袁WuXiaolong2袁WuLuchao1袁LiWei1袁GuanBaohong1Abstract院Thebiomassfuelwaspreparedbyactivatedsludgeandsawdust.Theeffectsofmoldingpressure袁moisturecontentandactivatedsludgeratioontheshatterresistanceandrelaxeddensitywereinvestigated袁andthecombustioncharacteristicsofbiomassfuelwerealsostudied.Theresultsshowthattheshatterresistanceandtherelaxeddensityofbiomassfuelwereincreasedwiththemoldingpressureandactivatedsludgeratio.Themoisturecontentofbiomassfuelispreferablycontrolledintherangeof15%to20%tomeettheacceptablevaluesofshatterresistanceandrelaxeddensity.Themoldingpressureandmoisturecontenthaveastronginfluenceonshatterresistanceofbiomassfuel袁whilethemoldingpressureandactivatedsludgeratiosignificantlydeterminetherelaxeddensity.Thethermogravimetricanalysisrevealsthatthecombustionprocessofactivatedsludgeincludesthreestagesofdehydration袁combustionofvolatileanddecompositionofinorganicmatter袁andthecombustionprocessofsawdustcanbedividedintothreestagesofdehydration袁combustionofvolatile袁combustionofresidualvolatileandfixedcarbon袁whilethecombustionstagesofbiomassfuelrelyontheblendratioofactivatedsludge.Thegeneralcombustionperformanceofbiomassfuelwasimprovedbytheincreaseofsawdustratio袁whiletheflammabilitywasbetteredbytheincreaseofactivatedsludge.Thebiomassfuelwithbettercombustioncharacteristicsdependsonanoptimizedprocessandrecipe.
Keywords院sewagesludge曰biomassfuel曰moldingprocess曰combustioncharacteristics
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