废轮胎的热解及其产物分析

216200011ENVIRONMENTALSCIENCEVol.21,No.6Nov.,2000,,,(,100084,Email:[e-mail]):(),,L,:200,2003003003L200,,,,500L4%NaOH,,LL,300,400(),600L:;;;:X78313:A:025023301(2000)0620420085:(1968),,,,L:1999212224TheWasteTirePyrolysisandItsYieldsAnalysisLiuYangsheng,BaiQingzhou,LiYingxia,NieYongfeng(Dept.ofEnviron.ScienceandEng.,TsinghuaUniv.Beijing100084,ChinaEmail:[e-mail])Abstract:Theeffectsoftemperatureontheyieldsofsolid,liuidandgasproducedinthepyrolysisprocess,theef2fectsoftemperatureontheconcentrationofgasconstitutes,andtheeffectsofNaOH(ascatalyst)ontheyieldsofsoild,liquidandgasandontheconcentrationofgasconstitutes,werestudiedindetail.Theexperimentsshowedthattherewerethreestabletemperatureregionsforthetirerubber,i.e.,below200,200300andover300.Whentemperatureincreasesover200,thesolidyielddecreased;thegasyieldincreased;buttheliquidyieldpresentedapeakat500.A4%NaOHsolutionwasaddedascatalystintothewastetire.Atthesametemperature,theyieldsofsolid(charcoal)andliquid(oil)increasedbuttheyieldofgasdecreased.Thesampleforexperimentswasdemonstratedtobemainlythesyntheticrubber.Thechromatogramsandinfraredspectrumsoftheliquidproducedinthepyrolysisprocessatdifferenttemperatureshowedthatassistantagentsinthewastetirecrackledin300,thenaturerubbercrackledin400andtheresiduebegantocrackleabove600.Keywords:wastetire;pyrolysis;infraredspectrum;rubber[15]3:()()L,,L[6]L,L250500L250,L400,L1111,1L40(),L,1.XMT2121K21K3141U511L,,L,,()L,(),,,,,L4%NaOH[2,4],,,L2,,4%NaOH,L2L250800,1002L10min,1LL1h,,L(,2308)H2CO,(FTIR8200),L112,L,,2L30minL2211200800,50100(),2,30min2L,200;200300,,,,;300,,,,,,;,;L,,L212L:(--)öL3L,:200,2003003003L200,L,L2[6]:L1L,,,,L1()1)()22+111)1;2L200300,,,L,,,68213,L300,,,,L(4),L4(30min)2134%NaOH5L53,5NaOH,,L,NaOH,,LNaOH6Lci:ci%=fiAiö(ifiAi)100%(1)fi,AiLfiAici2L26,NaOHH2,COCO2CH4L2fiAici(400)(fi)NaOHNaOHAiciAiciH214.8620.519.5612.2CO101789.51297.679.7897.5CH43155.071.80.6590.3CO211190.5560.100100.0100.0100.0100.06NaOH(,CO716%715%,9716%9715%)214400600800LfiAici3L7L37,,H2CH4,COCO2L2158L295215328671682925153285611014601380cm-1,LL1602158cm-1,,NaOH7867L45(4),NaOH,,CC,L3fiAici(NaOH)400600800H2Ai119.56187.72489.884ciö%2.20057.00063.800COAi10.779.7802.3591.018ciö%97.50016.4007.700CH4Ai3.50.6599.1827.719ciö%0.30020.90019.200CO2Ai11.90.7350.198ciö%5.7001.700N2Ai1.161.072ciö%7.600ö%Ai100.0100.0100.0ciö%445451643108cm-1CC800133cm-1CRRCRH910125cm-1CRHCHH989132cm-1CRHCHH3,:200,2003003003L20011800NaOH21600NaOH31500NaOH41400NaOH51400NaOH8,;200300,,;300,,,,L200,,,,500L4%NaOH,NaOHH2,COCO2CH4L,H2CH4,COCO2LNaOHL:111,1998,18(2):79811211,1995,2:52551311,1995,3:421411,1996,3:3715PetzrickPaul.TheChallengeofPyrolysis.ScrapTireNews,1991,5(10):151611,1999,20(6):77791711:,198918821