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1、第22卷第5期洁净煤技术Vol．22No．52016年9月CleanCoalTechnologySep.2016直流等离子体法焦炉煤气制乙炔试验研究李毛,谷小虎(中国平煤神马集团炼焦煤资源开发及综合利用国家重点实验室,河南平顶山467000)摘要:为替代污染严重的电石法制乙炔工艺,寻求一条洁净化乙炔生产工艺,利用100kW直流等离子体装置进行了焦化厂焦炉煤气与解析气制乙炔的研究,分析了原料气流量、氢烷比、反应腔体直径对反应指标的影响。结果表明,随着原料气流量增大,焦炉煤气和解析气主要指标变化趋势相同,CH转化率、乙炔选择性、乙炔收率提高,能耗下降,
2、其中焦炉煤气CH转化率为50．13%~62．95%,44乙炔选择性为60．1%~71．3%,乙炔收率为30．1%~44．8%;解析气CH转化率为56．65%~469．56%,乙炔选择性为70．05%~83．33%,乙炔收率为39．6%~57．9%。随着氢烷比的提高,CH4转化率、乙炔选择性和收率下降,且解析气中CO和O含量较高,促进了CH裂解,使解析气反应结224果较好,CH转化率最高为69．56%,乙炔选择性83．33%,乙炔收率57．96%,乙炔能耗最低为413．66kWh/kg。反应腔体直径为16mm时,反应结果优于直径17mm。关键词:直流
3、等离子体;焦炉煤气;解析气;乙炔中图分类号:TQ536文献标志码:A文章编号:1006-6772(2016)05-0103-05ExperimentalstudyoncokeovengaspyrolysistoacetyleneonDC-plasmaLIMao,GUXiaohu(StateKeyLaboratoryofCokingCoalResourcesDevelopmentandComprehensiveUtilization,ChinaPingmeiShenmaGroup,Pingdingshan467000,China)Abstract:I
4、nordertodevelopacleanacetyleneproductiontechnologyandreducethepollutionofcalciumcarbidemethod,theproductionofacetylenefromcokeovengasandabsorbedgasona100kWDC-plasmawasinvestigated.Theeffectsofflowrate,H/CHratioandre-24actordiameteronthereactionwereanalyzed.Theresultsshowedthat
5、therewasaconsistenttendencyofcokeovengasandadsorbedgas.Withtheincreaseofflowrate,theconversionofmethane,theselectivityandyieldofacetylenewereimproved,andspecificenergyofre-quirementwasdecreased.Theconversionofmethane,theselectivityandyieldofacetyleneforcokeovengaswere50.13%~62
6、.95%,60．1%~71．3%,30.1%~44.8%,andtheconversionofmethane,theselectivityandyieldofacetyleneforabsorbedgaswere56．65%~69．56%,70．05%~83．33%,39．6%~57．9%.Theconversionofmethane,theselectivityandyieldofacetylenewerede-clinedwiththeincreaseofH/CHratio,andadsorbedgashadbetterperformanceb
7、ecausehigherlevelsofCOandOcouldim-2422provemethaneconversion.Theconversionofmethane,theselectivityandyieldofacetylene,andspecificenergyofrequirementwere69．56%,83．33%,57．96%,13.66kWh/kgrespectively.Theresultsofϕ16mmreactorwasbetterthanϕ17mm.Keywords:DC-plasma;cokeovengas;adsorb
8、edgas;acetylene90%的乙炔是由电石法生产,能耗大,污染严重,已0引言[1-3]被国外淘汰。等离子体焦炉煤气
