我国城市大气污染越来越严重,50:排放量日益增加,给人民生活和生态环 境造成巨大伤害,脱硫工程的建设势在必行 本文从502的污染危害和防治意义出发,介绍了国内外脱硫技术的工艺和我 国脱硫技术的应用现状,对目前应用比较广泛的几种脱硫工艺进行分析和论证, 依据工程建设的现有条件和实际情况,最终确定对济宁二电厂2x100MW机组 改造脱硫工程选用循环流化床干法脱硫工艺,详细剖析了循环流化床干法脱硫工 艺的脱硫机理!特点和工艺适用性,设计了两种除尘装置方案,又从工程的投资 估算和经济效益方面进行了严格地论证,针对工程的主要设备!整体布置和电器! 仪控!土建部分进行了可行性分析,提出了工程建设的最优方案,预计将会产生 良好的环境和社会效益,制定出一系列相关的安全防护措施,保证工程的顺利实 施 通过综合分析得出当两台机组加装烟气脱硫装置后,可削减原50:的排放量, 烟气排放符合国家标准,达到了脱硫的目的,满足了项目的要求,对济宁乃至周 边地区的大气环境的改善是非常有利的 关键词:502,脱硫工艺,循环流化床干法脱硫,脱硫装置 了山东大学硕士学位报告 AbstraCt AirPollutioninoururbaneities15beeomingmoreandmoreserious,助dthe amountoftheemissionofSq15increasing,ailthesegivegreatharlnfulnessto peoPle,5life即deeologiealenviro刊ment,50theeonstl0ctionofdesu1Phurization projectisimPerative. Fro幻nthesignifieanceofthepellutionhannfulnessandthePreventionandeureof 502,而5thesisilltrodueestheinterrlalandextemalteehno10giesofdesulP玩滋zation andthePresenisit切时ionofitinChina,andanalysesandProvesseve司 desulPhur1ZationteehnologiesmParatiVe初delyusedatPresent.Aceordingtothe e往叮entconditionsand拍a>itiesoftheengineeringeonstrUction,1finallydetennineto t扮msfonnthedesulPh而ZationProjeetontheunit2X100MWofNO.2PowerPlantin J而ng,andseleCtthe勿circulatingnuldizedbeddesulPhuriZationteChnology,this studygivesadetailedanalysisonthedesulPhurizatlonmeehhasms,eharaeteristiesand teehnologicalaPPlieationProPertiesofthedryeirculatingfluidizedbed desulPhuriZationtechnology,anddesignstwodust一movedevieePlants,andProves strictlyontheProjeet,5estimatedinvestmeniandeeonomiebenefitsaswell;Asfor thekeyequiPments,overallarrangements,electriealaPPlie田滋s,instn月nentseontrols 朋dthebuildingsoftheProjeet,theauthorgivesafeasibleanalysisandanoPt加um Planontheengineeringeonstruetion,it15estimatedthatthiswillProducebetter environrneniandsoeialbenefits,andmakesseriesofrelatedsafetyProtectivemeasures toguaranteethesmoothimPlemenioftheProjeet. BythesyntheticanalysisWeknowthat:afteraddingsmokedesulphuriZation devieeon七邢0units,iteanredueetheamountoftheemissionof502,andtheemission ofsmokeandgaseanaeeordwiththenationalstandard,50toachievethePurposeof desulPh丽Zation,andtomeetthedemandsoftheProjeet,this初11bebeneficialtothe imProvementoftheairenvironmeniinJlningandthe~oundingdistricts. KeyW6rds:Sq,desulPh硕Zationteehoology,thedryeirculatingfluidizedbed desulPhurization,desulPh而zationdeviee山东大学硕士学位报告 目录 摘要....................................................................................................................I Abstract.,..............................................................................,.................,.....n 第一章绪论.............................,................,.........,.............................1 1.1二氧化硫污染及其危害...................#,#,#,#,一1 1.2二氧化硫污染防治的意义..................................................2 1.3本文研究的意义及内容...................#.3 #1.4本课题创新之处........................................................................#..3 第二章脱硫技术的工艺和发展状况....................................................................4 2.1燃烧前脱硫........................................................................................-...4 2.2燃烧中脱硫....................................................................................#.#..6 2.3燃烧后脱硫(FGD)l.3]............................,...,......................................7 2.4我国烟气脱硫技术应用现状分析122]I231[24]................................................14 第三章工程的建设条件和工艺选择..................................................................17 3.1设计原则.....................................................................................................17 3.2工程建设条件................................................................................#..#.17 3.3脱硫工艺的方案选择.........................................20 3.4除尘方案的选择....................,..........................,...27 3.5投资估算与经济评价..............................................#29 第四章工程建设方案的可行性分析..........................................!.................33 4.1工艺系统和主要设备.....................................................33 4.2脱硫装置的整体布置...................,.................36 4.3电气部分.......................................!.......................................................37 4.4仪表和控制..........................................................................................#39 4.5土建部分.....................................................................................................42 第五章预计产生的环境和社会效益..................................................................44 5.1环境概况.....................................................................................................44 护山东大学硕士学位报告 5.2空气污染物排放情况..,........................................................................45 5.3废水排放量.......,...................................................................................45 5.4噪声..,....................................................................................................45 5.5节约和合理利用能源.................................................................................46 第六章工程中应采取的安全措施..............................................................47 6.1应采取安全措施的环节和场所.................................................................47 6.2防火!防爆.................................................................................................47 6.3防尘!防毒!防腐蚀.............................................48 6.4防电伤!防机械伤害!防粉尘伤害!防噪声伤害及其它伤害.............49 6.5防暑!防寒!防潮,..............................................................#.#.....#50 6.6其它安全措施............,.....................................................#50 第七章总结与展望..............................................................................52