类Fenton试剂用于烟气脱硫的高效可行性研究 摘要 本文在铁法脱硫的基础上引入过HZOZ,对铁粉和HZOZ组成的类Fenton 体系进行了烟气脱硫研究1.实验首先进行了类Fenion试剂氧化HSO4一的动 力学研究,研究发现:HZOZ质量浓度!铁粉用量对氧化反应都有影响, 但H202质量浓度的影响起决定作用,铁粉用量对总体反应趋势影响不大; NaHsO3浓度对反应的进行没有明显影响;类Fenton试剂氧化5032一的能力 比氧化HSO3一的能力强;实验确定了该反应为1.3级反应2.利用自行设计 的实验室简易鼓泡吸收罐进行了模拟实验,考察了过HZOZ质量浓度!铁 粉用量!进口气速和进口502体积分数等因素对脱硫效果的影响实验结 果表明,HZ仇的质量浓度可低至3g/L;铁粉用量为4.2g/L时处理效果稳定; 在气速400L/h下,该法脱硫效果能达到99%以上;502进口体积分数对脱 硫效果影响不大3.在模拟实验基础上,设计填料塔小试填料塔小试结 果与简易鼓泡吸收罐反应结果基本相符,最佳液气比为35,实验能稳定运 行9小时以上 该方法比较目前常见的铁法烟气脱硫方法,有着实验启动周期短!可 直接利用工业废弃铁屑无需另外投加FeS仇!效率高等多种优点但是该 方法目前仍处于实验室探索阶段,真正实现工业应用还需进一步的探索和 研究 关键词:HZq,铁粉,烟气脱硫,催化氧化FluegasdesulfurizationthrougheatalytieoxidationbyFe/H20z reagent ABSTRACT InthisPaper,SOZwasremovedfromfluegaswithFe/HZOZreagent,whieh 15basedonfluegasdesulfurationwithiron.l.TheexPerimentfirstiystudied thekinetiesofdesulfurizationofFe/H202reagent.Itshowed:boththemass eoncentrationofHZOZandthedosageofFehadeffeetontheSystem,themass eoneentrationof玩02wasthemostimPortantfactorbuttheeffeetofthe dosageofFewasnot50imPortant.Theresultsalsoeonfirmedthatitmeetthe kineticmodelof1.3.2.EffeotsofthemasseoneentrationofHZOZ,thedosage ofFe,gasfluerateandinletvolumefraetionondesulfurationefficiency!vere researchedfirstlyusingasimPlebubblingequiPment.ExPerimentshowed:it hadverystrongabilityofdesulPhurizingeventhemasseoneentrationofHZOZ 153g/L.ThebestdosageofFeinthisstUdy154.2g/L.There幻ovalrateof 50215above99%whenthegasfluerate15400L/h,anditwasn,taffeetedby theinletvolume加ction.3.Thesameresult15showninaringPackedtower exPerimentwhiehwasbasedonthesimPlebubbling.InthisPartof exPeriment,thebestL/G1535,iteouldeoniinuouslyworkmorethanghours. FluegasdesulfurizationthroughcatalyticoxidationbyFe/HzOZreagent maylessenthestart一uptimeandusethescranofFewithoutaPPendi雌 FeSO4.ItalsohadmanyotherstrongPointssuchashigh一effieieney.Fluegas desulfurizationthrougheatalytieoxidationbyFe/H20:reageni15justinthe laboratoryresearehsteP,itstillneedmoreresearchuntilit15usedinProject.ABSTRACT KEYWORDS:HZOZ,Fe,fluegasdesulfurization(FGD),eatalyticoxidation目录 目录 第一章绪论.0............................................................................#1 1.1能源结构...................................................................................................1 1.2sq污染现状..................................................................#1 1.3烟气脱硫技术简介..........................................#2 1.3.1经典烟气脱硫技术.............................................2 1.3.2烟气脱硫新工艺.............................................3 1.4Fe离子催化氧化脱硫...............................................................................5 1.4.1微生物代谢与F矛十协同催化氧化法............................................6 1.4.2氧化铁浆液脱硫...................................#6 1.4.3煤浆洗涤法.........................................................................#7 1.4.4含Fe3+的粉煤灰浸取液脱硫法................................,.............7 1.4.5在磁力固定床中铸铁屑脱除502法............................................7 1.4.6FeSO4溶液加铁屑催化氧化脱硫..................................................8 1.4.7可再生脱硫剂Fe/AC低温脱硫...................................................8 1.4.SFe(IID催化氧化s(W)的机理........................................................8 1.SFenton试剂及其发展进展.........................................................................9 1.5.1Fenton试剂...................................................................................9 1.5.2光/Fenton.................................................,.............................10 1.5.3紫外光一可见光舰202/草酸铁......................................................10 1.5.4微波邝enton...................................,...........................11 1.5.5超声/Fenton.....................................................................n 1.6本课题内容及目的...................................................13 第二章实验部分.................................................#14 2.1实验准备.................................................................................................14 2.1.1实验药品.......................................................................................14 2.1.2实验检测方法..............................................................................14 2.2实验设计......,....................................................................................19目录 2.2.1类Fenton试剂氧化50:的动力学研究.....................................19 2.2.2模拟实验.......................................................................................20 2.2.3填料塔实验...................................................................................20 第三章结果与讨论.........................................#22 3.1类Fenton试剂氧化502动力学研究........................,....................22 3.1.1不同pH值下S(IV)在水溶液中的存在形式..............................22 3.1.2各反应因素对类Fenion试剂氧化HSO3一反应的影响..............23 3.1.3HZq用量对类Fenton试剂氧化5032一反应的影响...................26 3.1.4类Fenton试剂氧化HSO3一反应的动力学研究.........................29 3.2模拟实验中各因素对脱硫效率的影响..................................................30 3.2.1HZO:质量浓度的影响..................................................................30 3.2.2铁粉用量的影响..........................................................................32 3.2.3进气量的影响....,...................................................................33 3.2.450:进口体积分数的影响............................................................34 3.3填料塔实验中各因素对脱硫效率的影响..............................................35 3.3.1液气比的影响..................................,.....................................35 3.3.2HZq用量的影响..........................................................................36 3.3.3填料塔连续实验..........................................................................37 第四章结论与展望........................0..,0#0#/0#/#/#0#00二/二39 4.1实验结论.................,.........................................................................39 4.2建议与展望..,..........................................,...................................40