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1、第39卷第3期东南大学学报(自然科学版)Vol39No32009年5月JOURNALOFSOUTHEASTUNIVERSITY(NaturalScienceEdition)May2009doi:10.3969/.jissn.1001-0505.2009.03.040活性焦烟气脱硫脱硝的静态实验和工艺参数选择陶贺金保升朴桂林陆剑敏钟文琪张辉(东南大学能源与环境学院,南京210096)摘要:在自制活性焦烟气脱硫脱硝静态实验系统上,考察了温度、空速、二氧化硫浓度、氧气浓度、水蒸气浓度、NO浓度、氨氮体
2、积比等工艺参数对活性焦脱硫脱硝性能的影响,探索了使活性焦脱硫脱硝效率达到较优的工艺参数.结果表明:温度在120~180范围内时,温度越低越有利于活性焦的脱硫性能,而温度为130时,脱硝效果较好;空速在小于1000/h时,随着空速的增大,活性焦的吸附性能显著增加,继续增大空速,活性焦相对质量的增加明显降低;烟气中SO23浓度小于2L/m时,活性焦对SO2的吸附量有明显增大的趋势,但SO2浓度继续增大时,超过了活性焦的饱和吸附量,吸附性能下降;氧气、水蒸气体积分数含量均为6%时,大大促进了活性焦对SO2的吸附性能,含量过高或过低
3、都不能达到最佳效果,而氧气浓度、NO浓度对脱硝性能影响不大.通过实验得到的较优脱硫工艺参数值为反应温度120、空速1000/h、SO2体积比23L/m、O2体积分数6%、H2O体积分数6%时,脱硫效率高达98%;脱硝工艺参数值为温度1303、空速1000/h、O2体积分数6%、NO体积分数500mL/m、NH/NO=1时,脱硝效率为70%.3关键词:活性焦;脱硫;脱硝;工艺参数;热重分析中图分类号:X511文献标志码:A文章编号:1001-0505(2009)03063506Staticexperimenta
4、ndtechnologyparameterstudyoffluegasdesulphurizationanddenitrificationbyactivecokeTaoHeJinBaoshengPiaoGuilinLuJianminZhongWenqiZhangHui(SchoolofEnergyandEnvironmen,tSoutheastUniversity,Nanjing210096,China)Abstract:Usingastaticexperimentinstallationofdesulphurizat
5、ionanddenitrificationbyactivecoke,theinfluenceoftheparameterssuchastemperature,spacevelocity,theconcentrationofSO2,O2andH2O,thevolumeratioofNH3andNOontheabsorptionabilityofactivecokewasstudied.Thebesttechnologyparametersofthedesulphurizationanddenitrificationweregain
6、ed.Theresultsshowthatthelowertemperatureisinfavoroftheadsorptionofactivecokeintherangeof120to180;whenthespacegasislessthan1000/h,withtheincreaseinthespacegas,theadsorptionabilityincreasesobviously;butitsrelativeweightmaydecreaseremarkablyifthespacevelocityincreases
7、3continuously.WhentheconcentrationofSO2islessthan2L/m,theadsorptivecapacityhasatendencyofincreasing;butiftheconcentrationofSO2increasesandexceedsthesaturatedadsorptivecapacity,theadsorptionefficiencywoulddecreasedramatically.TheconcentrationofO2andNOhavealmostnoinf
8、luenceonthedenitrification.Theresultsalsoshowthat6%and10%isthebestvalueofthevolumefractionofO2andH2O;120and130arethebettertempera
