生物质在流化床中的热解和气化研究 生物质在流化床中的热解和气化研究

生物质在流化床中的热解和气化研究

  • 期刊名字:燃料化学学报
  • 文件大小:
  • 论文作者:苏学泳,王智微,程从明,唐松涛,吕子安,李定凯
  • 作者单位:东方电力集团工程部,西安热工研究院工程中心,清华大学热能工程系
  • 更新时间:2020-03-24
  • 下载次数:
论文简介

μ028%r μ04EUEV4AT>-NsNs+°Vol.28 No.42000Ae 8 oJOURNAL OF FUEL CHEMISTRY AND TECHNOLOGYAug.2000E T0E0UA+>- *20DμAE%a91Eo》ND%i'EONSO%4" 2-i60C1c^ E3i "0A+-1EE112 AAx0°2qAi9 i一f"Cans 6NSEEAO131Tμ2 t土410084200a 0∞εOU∈B@OδF∞4°μ≌EoA+ 1->* 10%WpTA2902》 1ETOE0-A1:ODEEiaF>" EuNezNDWzFo la2u1rzuAEjE -0Ea-0|TAEμAta》1aAE if0U0》63EN11AAYA->- 2EuNe 1*ETEqTaOOEGTTOEO-ATEEVaE0>- x0T1yajμAEo la2TrzuAE%°3E -0WaDDAERT i27A0D00μa -016AE0-AT SD20A" Eucalyptus Globulus aAo20e SD202”Pimus Radiata %aAOEOUEOOδEO/°μ≌EoAτ>-9[2, i-TAE 16%/pTAμAEE'AaFEg》1oD0£i-E+>1 -016AEAv600A→》TeElo/WpTAETTOEE%aE0》EμNe1a1qμAit0if10/40 "EEETYOE£>A+>~ ' 2EEE0>-0D1%4 -0Aa9A29rQ351.2TATxteEqAeCA1A0AaRAE90253 - 240"2000204 - 0298 - 08ETToEEE/%a2 iEO》> -EC)}x<3J/%DOI-uAEUTOEAUOA的hal[0> EμNeμAO-ATε6uAζμAπσ0μ -01δ910≥E0 -01oEE>“TNs -/-"Ey%qig βI4qDTi-uAEo ia>o0e iaE%ATμA0O /4Q+1 1AE%T -02//0+1 2jEE 0)1=EA9N->-A+>- "210.09342θE0U坦-ciEOUEuA00~ 9「》.+LμADe0≈θUQV∈ti 1 EuTrOENUE-μA1∞0μ -0169 10@E0-0T8ETEOμ/z, BEAμA0E06019ε0∪_ O0ETOEE/haAFO>" V4AE6Table 1 Proximate and utimate amalyses of biomass samples1-2E0> jθET“2E0》jQ+》~ °2E0>-91D~ °σ°2EoPoplarBagasse Cotton SD201SD202》72DEA+>7 -2EE/haFEO》ODEaTAIOμAOAμQSYEEuTrOEsawdust_stem0u1eD0A+>- -2AUE/haEmO0UE@OOEoA+>- *2AUE%alEoW/%10.047.117.9412.384.94 .FC.1/%13.3912.43 16. 5211.7613.44.》EAUZUEGODEEOμE/4Eo jENDWEU1YOE0UA-》- AUμAEEV2p/%80. 1584.4077.0074.9681.22VWa91OUE66Eo21O0eAμEE)haE0》- i0D02O2 -C0>00 βAw/%4.190.94 :4.570.90.40Wa:/%2.272.554.94DSQa/kaμAEuTTOEAOV/4E6S%BOD000uAO, u/a0aiCa/%46.8748.2845.6542.630D10Eu TT0EμAEE/kaEo>-ONODD19aEμNe91AiAONDH/%5.525.665. 606.55.9434203~ sp<0UA+- =0DAEE)aFEo》EμNeND%iE21%%T0a/% .40.9142.30 41.0237.0140.26N:/%0.180.220.530.33fu6zEεi0HδECTOTeD0Eo -00DuAA+>~ '2Eu TTOEEWaSa/%0.060.05 0.160.050.04E@O6EoFo -00DuμAA+》- 2ETTOEE/aFEo》 μANDW4jYY0米/M.Ng-1 15.533 16.245 15.156 14.821 17.333EU;2+%AμAAUEYECA -0P%-1A12 1-ia- EECEQEOUμAO》2 EUTTOENuE -μAAES4M -02/.δ104E≌Txτ°λAεNDWjka10μAO>2i -02θ02/eEUAn00Table 2 Size distribution of biomass samplesETrOEO-AT -0+80UE@O6EoA+>-9fμPEoA+>~ μAA+> 2一Size rangePoplar Bagase Cotton SD201 SD202DEWaE> μAEo iazu1rzuAEjolaxe-0-0AEiqpM,/mmsawdust/%_ 1% sten/%_ /% ./%OμEaTAηEμAta>~ 1oD0£n1 %eEUAE Ta0OEuTrOE0-AIEE0.051.07.1 0.213 0.1212.0~ 1.013.727.433.3 0.654 0.227W6aFo) uAAUA;010EAx>>DSAE0eTAηEμA10Tμif1.0~0.7125.69.315.4 10.947 30.6200.71~ 0.631.94.4 9.077 13.9461μNe0.63-0.44215.62.34.6 24.236 26.9521.1 FE0>-0-AT°['2AT 0E土AEEyOO1UAOμAEuTτ0∈0.442 ~0.3550.84.8 8.150 6.2150.355 ~0.28017.311.7 13.350 8.762NUF. - NTA%aA" Poplar sawdust2QcE0a0uA~ Bagasse£O0.280~0. 10514.714.6 21.195 10.2329[Ap > %&OA@r" Cotton stem国Ai Az00Eu 1τOE NuE- -0. 105 ~ 0.0980.70.52.7 3.543 1.000 .0.098 ~ 0.0612.0SD0T~0>00enA%%aAOZC i SD202~0> 00E A4%aAOCOE< 0.0611.60.6 3.816 0.758EA/ypuANDi>011 Van Swinden Laboratorium NederlandsAverage size/mm_ 0. 3691.056 0.433 0.249 0.417Meetinstitut B. v. Ia1OjETE6Ta0OEuTTOENuAE -0Ax+nole£9iagasse sanmple appeared as fine needle shape印。aE0LU91999- 12-11A-0P-/4A12-i8~ EEC2@Tx+TAi2ITA;°AC9IS3 * - CT92 - 0090340EONSO%μ∈εEu1τ0E0UA→>~ *20DUAEI%a2iFo》NDWi299ATμAN- ->0x+A+>- -EE)aFo>-. 0|E+μA 2ATEAi个NU4EBuμ1AEAaAI1OμAqEε60la ,AE/oEe -cTauAA+EμNeC°2≥2ATY940@%- 1yE$201ε |AL2ATμAE%84uA&$M》 7he0EμATATEi&但332pumif-0: FE+ TAE μANE>>UEy34Y≥EV- Iμi3OEEB ,δ1.2 EμNex°0A EμNex°0A0E06Eo -cEUE=jQoATx°MODULE - TK EEμGAV%-A 6/taE1E+ALie91O》ie PC-0AjA+>- 2.0!E=iAC/%OEEO@%4bje0AeE+j410TANya1216CD1 12个》16 "μA A/D x易》>°axe3E jEE%aFEo》~E+jaAyIμisjeaAj21EywY2EVT Iμ j3μExe3EL6c i% 1Eu3EpμAEo 1a2uTY% 3y3%jCE0r jaaE”≌6 -0+00AA9EoA+EE%iE-" 0|E+士%ia1AU4q中150mmi gB 1360mm μA2》Ai+191x x0A+AgWAEZaAiAO>yA+Ai2 1E2EtA+Ai i∈μuNeDa_01U2xi. ,BEeWE 1ox+ TAE 1273Kjf0Ua2%-c°a1y3i0D"E+OA≥ENuEo”u≥EV 7EoNujE80mmi s00mmi 600mm 2i 100mm uA _β作-0tδ°2x°EA1.3 EuNe-%° yu EμNeOA -2AT -AEeAI。¥ATE6U .0>Ao。σ- Ao1eiox°EEμcANjE-O!压+ laxODux%OEE 900CTAwOEE 2h 1o03y>00DμuA2Di/4jεO∈E .*0IE+μhEe0@/4b2c 2.C+ETAzAAT2HOEEOB/4b -00-ETAAi2i -02- TuATAE jLT0AT20F"Eeμ≌EoμAI-E1o- 601E+ODF"Eex1761 |AE -0t01日4kW 2[ 8kWZ++0EO> 0 DRZ D1μgxeE⑧O6压8"0∪μ≌EoA=》→μAlo/pIA0o i" Eeμ Eo£国?cμ≈%UA-AME0OEIaj0OFj&EuACμAA=Ai&' y-~O|E=ODUμAEET0@96EF68qFAT2C)YA °eμg >u91AYDy. oAT>uif. oATE+%a 0》°a30Do12mini20U oATEU/a9i 12AT00960> TE+WaAU£0U2> 1hμAE+ji=ENu2%oDDEo Ia<5. steam generalorf>6. nitrogen bltles7. biomassEaNuEo0D +xe -0uAlax>y -0AEifhoppr2*8. screw federE*9. motor£>10. gear caseL>1I. motor£》010μAEμNe i6%4p/Q+ti 3jf12. gear case£*13. nitrogen flow meter£14. biomass drop tube£》ti3 EμNe 1o V4b15. steart" nitrogenECheaterf>16. cycloneE>17. tar crackerE》Table 3 Experimental conditions18. main gas cooler2>19. condensed water/ tar olletor£*20. fi|-ter£>21. glass condensing coilE*22. gas flow counter:23. gas flowFluidizingMedium rateDense bed Dilute phase Biomass feedmete£》24. sampling line£》25. torchE》26. power and controlmedium/kqh-1_ temperature/ K temperature/K rate/kg 中h一!Water steam 2.8~3.7 923~ 1073 923~ 10731.4~2.2boardE>27. compuler£>28. cooling waterE>29. bottom headerN22.6~3.0 923~1073 923-1073 1.61~2.35OEOUEuTYOE iAAEA=qTDO2TZzAAEO@waEYOx个%0yUCAE=0qoOi3∈,oATY%EALiOx if个)%a%0 -ETEIa2E0A2 ELμNe/a100e10A0uμg>G_ +土场E(>(11 °oF70> ,030TAToDDI/A°ejCAY2.1 E@O6EoA+>-16%4pTAEu TYOEμAEE/%aAEo>~ 0UE@Dy, oAT>uuA , oATEUAEOEμ∈EUE+ ;OOEjEμNe1y3i0DE→06EoA+> - 1o%pTAE6u1YOEX%-AUEIha9iEo> AY2. o1yai;f0AT201¥2i F"°EeμPE02230AT2ON1 Al. B0U- 0|E+μAOEOUA+>- *2AUC;AOμAEo1>i9°9F《EL6UTTOEATY%oN1A|E-AO1E0>~ EOAUμAEola- 061ATA0E3A04-1yEe'zAUtaN, EUEy TATo2UEE -0la6Z6U3Eo TazuTEcAaAT10A-Do%eEeA+>-2j2Tθ . AO1AaAT10AOuATATE1yC01CO2itl2 iCH °1EaEuμi 14Ga>-9T1T2> ' 10e Ia2u300ENAY,-NSist"28 %T0E010iPoEEaEoEo iauTieiTaeonxaA-102>1-jE-cEUECTAEo - REojEo - 1-01290U.ATEUWaQ.CTAnETA +Fo1axe-ouAiay-OAEH20 + C0→CQ2+ H2"120 TaEt'Eth °[ co 00670。75%E6HL.0iCO2 6.H20 + CHu≤C0 + 3H2r"20 010/20-25% 26.H 0>0%3- 5% EOEOEoTrE0-ATOD2H2O + CH≤>CO2 + 4H2f"30 μAN6°-Ai .BEAEFo la2uTrOD co uAlawy -6AE“02的lC+ H20 μAx0°Tya 10ECEu8Eo ia2u个-OAEtE 6o0CcE+ODA+ TOuA/060 70C ~ 8000r~0+0@2-0D H2iCOjCOjiCH4jG2H4 xe .0f@1619j%1£ AUEH2 uAiay -0AE 90:06024010 SD202£60 650C。2u1μARGAEe[∞∈.0.02/63y0Eu1r0E0- ATE0OD1080C-+15SAUCH2 uAlany.0AEOo -R:/w°i2couAiaoy_oaEm10E-0OIAE766Eo/EUTrOEOEA;tE ;TrATjAAOAEEeTAnEuAEy. .BOoW6Di9aO0OECOEOU_ *0$"128+-0AμAW的°Oj[ik8" a2@1% 8"°b26DμuA 750cEμNepμaei∈TEoEuDeO≌uAAiεθ° EOOUYTCOE0-ATGE-EAEODCEFODGEDEU2》, 0fhaBAEC∈μNe162iE0OA;EcO, uAiany-δIa2uTημA2uAE9[3∈ 0-02%/]01aQ2) DSAENIO+ A在a TAEuAEy .000ow0fu2》A+ IO;2 CH i00j80U.-0}TAEjZTAAx000O SD201 ei SD2021 CH uAlawy 0AETWETAEAEY ,BIoDEi/quf;fAyEμA+0aDO10Iμjf1EAT0O96Ez+Fo laxe .0μAlay -0AEVxT0@_ oATEU2.1.1 FEoiaxe .OμAlawy .0AE 1%2 0AT% 6 ECEBOoa-cEuQJ'6士a》iEH,jCOz uA9AiV4"6 -oEy. ,B29oEoA+>" 10/)TA2SD201。i SD202 E)aEo uARco1a2uCOiCH4iC2H4 uA-Ai0°6 -u%uμi if0aEμA+ iE2AT°OE-10D2》inxe -uAany .0AEOe iANEuA 10TμεOEfxε∈VOENEITFETOFOEC+FoFxF 0uμta~C+EE(向) SD201(b) SD20260)上●-650C;水-700C50一6509C m -700C750C; 80t:9-750C; ,一800C三I ume/ min126T ime/ min1%2 Hh lany .0AE - TAE107μFT"H,0EOFig.2 Volume fation of h2 vs. time at dfrete tepnaueHL0eo60(间)St211b SD2025110412120一650t701C;1-65C; 中-700C;一750rC;H:0-RO09;210I 1unc/ nuT ime/min40EONSO%μ∈εEu1τ0E0UA→>~ *20DUAEI%a2iFo》NDWi301回) SD2016) SD2020●-650*C; 国-700●一6509;内 -7009C00-750C:x一800%- 750C: ¥一800CC100t216Time/ min1%44 CO2 lawy -0AE - TAE101μiE" H2020Fig.4 Volume fraction of CO2 vs. time at diferent temperaturel" H202021向) SD201b) SD2025110-。-650C:中-700+:上一650C; 中一700TC:SO09C一750%C;800「- 750: ””800C12I ime/ min" I imie/ min145 CH4 ay -0AE - TATE101μTE"H20E0Fig.5 Volume fraction of CH4 vs. time at different temperatures" H2OE⑥6广(24) SID201() SD202-6509 的7004 :700t+:一7509046146 C2H4 lany -0AE - TAME101μIg"H20⑥Fig.6 Volume fraction of CH4 vs. time at different temperaturef" H2OL@-0EuE co 9[ H2%1qo co 91E@0δEo -cEua>》- TaqobTDi jEOU.ATEUyaf和o lazuAEEa TAEy βB9Io060|EsE CO2 2i H2ifOaDO.- 0|0E0UλAEμA0δ%40qoμAw0f9o00 1EAT96$FAEO%_ BE q00 μAEo ia2GAEO%Djifμ1/4OCi26u00TA1EO%2。BEH2 Q[ CO2 μAlay -0AEOh76iE00T@AqE0%。BE6u170EμAEE%a9 iEo》> -EUAEO/2 626u个2.1.2 FEo iazuAE9IEEOμ E间O6 FEo A+>- 1δWp 1AE-0EATμAT09A%IOkzij21%9" Ib20D 700°C E土Eo iazuAEμASD201 2[ SD202 0UEμNe 1y3i0DpμAEo la2u1rzuAE9f-c0i≥μi 0μEC06但Eμ4EμA '2 TAA》0D TuhEe 91" Oμf9oEEAi -0+8E8401/4721148j21%47 tiA-EθUEuTTOEiqEe800CE土Eo la2uAEμ10ojEAUEC oATAEμA2aT162个.0|E+ 3min 968和iaμAzuAEONC+0UTET°2iE01 iqATEuOAjf96E60 iaμAzuAE90ji%μμ1 jE0aEμA+OEOUEuTrO∈μA>O% 8 TOEWEEU。oAITEUa£θ》FTATETAEoIa2ur.+xe .0uAlav .0AETaqOTere1Eq00! uAu¥↑iasvEoia302E AT>-NSNS+°28 %「1.0网) SID201(b) SD202司0.80.8)60.6).40.4:-650C①一700*C;0.20.081210021Time/ minTimc/ min147 REoiazuAE - TAE10μiE" H202GFig.7 Variation of gas yield Vs. time at diferent temperaturef" H2020(1) SD201县16 t色8E1650C; -700C;-650C; 中-700C0-750C;800C。-7509C;-800C6[W8 Eola-cEEAi - TAYE101μIS" H2020Fig.8 Gas low heat value vs. time at diferent temperatureL" H20E@xe -000 H1CO2 TO46OjCH4iCH μA9-Ai TAyu2E出f 4 E@O6EoA+ 1-- 16WpTAEUTYOEUμAE')aEO》° x@》>DSAEEo iaEOμ02Ea0@/yμμI iEEo iaEEOμxOμAC+←EECExTAqETable4 Conversion fficiencies of biomass examples with steamμAEy B1]o TANujf0a0》-1AaECOO TBEaxATAmEμAEy ,BE-as fluidized mediaEo ia2u1r0D CHLiC,H4 μEEEOμ ,BμAFto ia9-Ai46EU2A1BiomassTemperature Temperature EfficiencyEficiency0> -/AaEC∞oTa H μA9Aj06/40E602 02A00D06%40210samplesof Denseof Dilute .of energy of massbedphaseexchangeIoμ/:OA-cEEAzμAwuμ1if1/Cη./%n/%2.1.3 AUAz910EAjx:>>DgAE roaEu TEE)haEoPoplar sawdust 59056173. .0386.25》μAXx>>>DSAE ηe 910EAEx>>DSAE nm 1Poplar sawdust 61960474.0989.25Bagasse65470161.1669.85_iA9EoμAμ11, -cEEAin= ED-ATIAILEEAx100%0 9"72◎67368875.7973372865.0881.4479178068.3174.587m = ETYOEO-AIμA EOTP>O>uOEAi。CLOLOL x 10080Cotton stem65151. 8664.79的”12年62f0DμA°° iA9Eo iECO_ ,0EEo ia2uTrμA》u72761.4976.36.土W3E-0 HiC0iCO2iCH4iC2H4iC2H6 x∈3EμA_ EAREOiE74973670.7583.6079677474 .0083.87OEEo la2u1γμAE2E+2[AU>y2QAE iBUEouATAEQIN1A|icSD20169664.01 .67.06。+xe -0uAlay -0AEi $E/xe -0μAEEOμ26YOxEa36 iA73774475.5482.46EoμAμi> -cEEAi21 jA9EoμAOEAi iE@O6F0A+>~1o/b78477283.04 .85.12TA2> 1HETEEYaAEO> uAAUAx >>AE910EAix2》》>SD20265570256.6262.3068169152.5356.29 .DSAE/40士i 4jf+i 4 1Ox>E>>>DSAE η。9[ rnn OeEuTTOE75074262.0768.144E0EONSO%μ∈εEu1τ0E0UA→>~ *20DUAEI%a2iFo》NDWi303TroD CO2 μA"aOUsθEAix县>$AE x0 BOA:x>>D$S[%9 0AT% 13 EC SD201 EE%kaFEo 1a2uTr0D2, 1-xeAEif-OμAlay -0AE0eEμNeAu3j°fTAEμA10Tμjf1% 14i6%2.2 μEoA+>- i6WpHAEuTOEμAEE/a 0AμEox+A+15 -0t0ECEo ia2uAEip1T> -CEEA;OeEμNeAu3i°TAmE》VkeOES6uTrOE%4- AuμA1y3i0=0∈ECE)yajfEaE> ESaμA101μif0∪。oAT/%x qTjμAO>T" AMETAE和iazuTixe -02114a02>a -cEu-"0p<0E0U-O!E=AUEo itlTaEE%aμAla>y -0AEi年o iaμAzuAE i EOμWTaqOTETfEAT962u个1 μAA~作μiEoa DO." 0! μA DS 10iE0096A0;2100δ4+%C%qμOAVzO/uAajE0aEμA→0UEμNe TAqE -9TSAUE60SD201 2[ SD202 91V4x←AEμ≌EoA→》-IAμAEEIaEμNeE→φ1r0E0UA=>- 2AOμAEEVaEUqE20;iEEoiaxe -01ax)y -0102> f-EUTOEμAEEya 100222 -f0m%UEj胆-0CAAEμA 6Dj0A TEC COjt21CH1CO2 9[ CHSEFaOD coAeO0>%6∈E0 SD201 HAI%ai0D0300厂●一6S0C25D - 700CO一750C60-158 40-100O-750C; x一800C20T ime/ minTime/ min1%9 H2 Iany -0AE - TAE101μ18" SD201IEN,2O% 10 colawy -0AE - TAmE 101μ I'"SD201EN2hOFig.9 Volume fraction of H2 vs. time at diferentFig. 10 Volume fraction of CO vs. time at differenttemperaturef" "SD201EN2OtemperatureE"" SD20IEN2015-8888一650C; 中一700-C;●650C: φ -700C:0- 750C; x -800C750C;x一80001[%11 CO2 lawy -0AE - TAE101μIε° SD201EN2EO[%12 CH4 Ia>y-OAE - TATE101μi公SD2012t12OFig.11 Volume fraction of CO2 vs. time at differentFig.12 Volume fraction of CH4 vs. time at differenttemperature£" SD201EN,EOtemperaturef" SD201EN,2@uA1a>y-0AEεE BT 45 ~ 61% jfH2 uAla>y -OAEEaTA●-650C;❹ -700C;EEy β1o06 6240 C2H4 uAiay -0AE0oμt 21A Tμ%k0- 750C; . 一8000700c00ETE+90A+ 101AVu2θ190U_ ,B1AIAO”TE/haEu3EuA 6-0x0V%Cam- °1γ/iDo -CEuTp TEE%aLEU3EvTDi -0x0μA1/4Ca》91>0 H2θa020yOEo iaμAEEOuExTAEEy。BToODEuTA/hμiECO2 μAiaxy -0AEEPδEaTATEEy, B1IoODEU/uμi j2COjCH4 uAIa>y -0AE0e TAmEpμA101μ2>A+10jεETEσ IW40D0DD0EuNeμaETTA2~qTSECOEOU似13 CH ay -0AE - TAE10UμIg°"SD201ExN2⑥0Aμ≌Eox+A→~ TheOEE+£2> InE@O6EoACNuAO+>AaAyIAFie.13 Volume fraction of CH vs. time at different304E AT>-NSNS+°28%i20160.8车04●: 6500 H -700;●- 6506; o 一7009C;7S0Y ';80H)t:2Time/minTime/ min[% 14 Eo IazuAE - TATE101μI2° "SD201EN2O%415 Eola-cEEAz- TAYE 10°μig"SD201EN20Fig.14 Variation of gas yield vs. time at differentFig.15 Gas low heat value vs. time at differenttemperatur&" *SD201EN2Otemperature," *SD2012N20iaA+Ai' oA~WT6162TiE0ODESD201 μA VaxiBjfθ2 TU/%AE 74.96% E>0-c -0μATo士i 5。o3δμ9EoA+>° 16%4pTA SD201 EE/AμAAUAix泪30OEo iau1jμAEu≥EE8%46T"D0μAx=0Aif>>DSAE910EA>x>》>DSAEif+i 5 0DEy%YμAG+EE0e+i 4A/200A->- 16/4pTAEoDY2uTγμAx个6ζo←000∪μt“2μAC→EFECO>0AμuA&μ< x>DSAEE@OδEo A+>7 1o6WpTATA3-1y 700C EE知0 laxe -0uAlay -0AE -02%0D1aμμADSAEμif6μA2个0i j200 SD201 RAy£0U 650C 1o i6TAEAvo0/he0EA+》- TAμuAFo 1a2u1r0D HiCOjCH 9j CO2 ay.0土15 μP0=-→-4T%ITAETOEHAE/ax县 >》DsAEAEμA2个+02>A+ I0i200 700 ~ 800C TA作-9iSAU2E@06Table 5 Conversion fficiencies of biomase" SD201E@with nitrogenas fluidized mediaEoA+>- TAEo ia2uTrOD H2 μAlay -6AEE1-TATETAμ≌Biomass Temperature Temperature Efficiency EfficiencyEoA+》Etx16. β3δ 170%2602. β36 80%2那0 COfsamplesof Denseof Diluteof energyof mass .CH4 uμAia>y -0AE0≌-040x1Maμi 51%9「47% fp E土Eo ia3E -0μAtE%Y jEOμμAxcOaμASD20166072057.88 .63.53ECεθU1-TAηETAEO6EoA→》- E土Eo iaau1rODμA C2H4 9i69173868.5274.01C2H6 uE 6-0x0Eo la9-AizEμ EoA+>- E+0》a. B3δ73372375. 1284.1480577679.92 .90.5620% 0A 50% iEiE140U BATAEA+>- 2ET1TOE/aEo》E+EDxa1》E@O6EoμA a0Uz> 6AOEEuμ∞0w40OEo 1a2u2.3 E@OδEo°fμEoA→>-16%pIAEuTYOEE/aEo》~ DDAEE-AtaEo laxe -0-02/EHoCOAOUE1 EE/hazuT/b101μA但uAE)Y E%TEuTrEOUTeDOEo -0A>>- *20DuAEEWhaE00oE3E -0x0AεhTDjμAEo lazitreaq0002uEo↑aioD0e E的O6EoA- >- i)%pApAIE%aAE0> ioD0£zE00-cA;AμAEuTrOEEc> ECE@ -00DAOuμAiE10EuACμAA@Iμ9 iCot0jf0UA/O0A+>- 6%pTA2和o *2AU1201E1AT°6E1jA≌Eoti 6 SD201 0UE@OδEo≌Iμ≌EoA+1> 16%pTAEo 1a3E -0μuAtEvTf" T= 1023~ 1073KE@μAzuAE[1/4+%Q%μμ1jfE)2T1%4 A”a2唱i [14 14200_ oATlxTable 6 Comparison of gas fractions with steam and nitrogenqTEo iazuAE[T%Ea”2TAEy. ,B1po08/OE9oCOE iazuAEμA~6as fluid mediunf" SD201E-T = 1023 ~ 1073KE0Dj0QO0UIa-μAEVETifNv4DEEva∈tμAuAEEE)aEoFluid medium H2/% C00/% C02/% CH4/% C2H4/% QH6 + C.H/%》μAZGAE> 1 AO_ ,BL6COEμ^EoA+" Etx2 x0A+AjvVFEqAEy2>Water steaen 35-37 31-32 15-17 10-12 3.4-40.3-0.6xW0yEoμAjtE%Tti 4 91ti 5 0DpμAT00!Ey%Yv20U1-0>TA7-26 50-62 9.8-10.5 15-17 2.4-2.80.2-0.5EEEWa)E> x0≌T1y3jμAAUAzi6EAi x>>DSAE3.haA0xTaEE/ha1y3i B 11% jf0aDO10I6qV4EμA=EA+>- 21"1y+%1AμAEμNeND%i9i -01688E00μA3800TA0>ODEuTOEμAEI/xax+0A0UE0O6E0A+>~ μAETEEI/aEODC%aA0L240EONSO%μ∈εEu1τ0E0UA→>~ *20DUAEI%a2iFo》NDWi305720- OIE+μATAEOU 650C ~ 800C -9iSAUEE- AE ηno Oe0EAx)>>DSAE nm 4GEe .O|+ TAIEμAEy ,B1oETAEμAEy, ,BEtl2 21 Co2 0UEo ia2uTr0DuAla>y -.0AE08 6E0θEAx>>>DSAE "60UA0Aix >>DSAESoCOE@O6Eo0/024o co 1i%Can-TrμA°Ai 0o0DEuTAlAμjfEuA>~EtμAx旦>>DSAEAO 60∪μ≌EoA→° EtμAx》)DSAEifTτOEμAEE%aAE0》TAE 600700CEtE和iazuTTxe -0f"4E@A+>”2AUEBOδFoμA aeOUAU UELETTOEEE)haEuμAla>y -0AEta》: -2> 6jf3E1A%1010>0>2/%ANMaS6u3E CHiC2H6 μEo1azu1rjfF"3E@OUEEWaEo》0DE6u TY0E0-ATμAAUAi x2 >>D$2个iW4 TATxEU1CY Fabry RE-Goudeau J C. Themal conversion of biomass and waste by combustion and pyrolysis/ gasification - CEC Directorate - Generalfor energy demonstration programm&UCEY Inf"Biomass for Energy and IndustryE-Ed. by Grassi G et al.2-19872-274 ~ 282.£U2Y EONSO% . A--16/AITAETOEEhaEom-1y31μAEμNeOeALDIND&QUD2Y土土NOCCax”ONSEEAO1o311μ2-1998.EU03LY Donald S SE dan Piskorx- Maurice A B et al. The role of temperature in the fast prolysis of ellulose and wooQUJEY Ind Eng Chem ResE-1988E-2 1公38.EU4EY Theodore R NE-lack B HE-John P L et al. Product compsitions and kinetics in the rapid pyrolysis of sweet gum hardvoo@UJEY Ind EngChem Process DevE-1985E-2日" 30836.EUSEY krister SE- Emilia BE Rolando Z et al. The pyrolysis step in combustion of biomass and coaEUCEY EC Ressearch ProjectERAPAS - Con-tract COAL- CT92 - 0002.£U6EY Mao Jian - xiongE-Li Ding - kaif Cheng Chang - min et al. Thermochemical Upgrading of Biomasses to Gaseous and Liquid Fuels andFeedstoclSUcEY EEC Biomass Research Project No. TS3“- CI92 - 0093E-Department of 'Thermal Engnering£: Tsinghua Universily£-Beijing 100084E-China.EU7EY Corella JE-Herguido JE Gonzalez - saiz J. Steam gasification of biomass in fuidized bedetfeet of the type of feedstoc&UCY InE9Pyroly-sis & Gasificationf-Ed. By Ferrero G L et al. 1989E-618 ~ 623.£8EY Ozturk ZE Merklin J F. Rapid pyrolysis of ellulose with reactive hydrogen gas in a single - pulse shock tuleUJEY Fuel£-1995E-78" 11521658 ~ 1663.STUDY ON BIOMASS PYROLYSIS AND GASIFICATION IN A FLUIDIZED BEDSU Xue - yongE-WANG Zhi - weif Cheng Cong - mingf Tang Song- taoE-U Zi - anEHI Ding- kaiE" Thrmal Enginering DepartmentE- rTsinghua Uniersity2- Beijing 1000842-China2OABSTRACTEExperimental investigations of biomass pyrolysis and gasification were performed in a flu-idized bed reactor with steam and nitrogen as fluid medium respectively. The size of the stainless steel re-actor is 150mm ID and 1360mm height. Five biomass samples£ including poplar sawdustf bagasse£ cottonstemf teucalyptus globulus and pinus ratiataf-have been tested on the facility at the temperatures rangingfrom 923K to 1073K. During each test run£ biomass feedstock was fed into the reactor continuously fortwelve minutes and without residue discharge£ rmeanwhile seven gas samples were taken - five in feedingprocess and two after stop of feeding. The transient and accumulated gas yields were measured with ro-tameter and a gas meter. The temperatures of the fluid bed and freeboard were acquired by a system ofthermocouples connected with a computer. The gas samples were analyzed on a gas chromagograph. Onthe basis of the experimental results£-the variations of gas yield£ gas composition£- energy conversion efciency and mass conversion efficiency with temperature are discussed for each biomass feedstock in theboth cases of steam and nitrogen fluidization. It has been revealed in this investigation that the presence ofsteam in the fluidized bed reactor stimulates tar cracking to form the gas species of C2H4 and C2Hgf-etc.KEY WORDSEhiomass£ fluidized bedE pyrolysisf gasification

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