篇一：发电厂检修规程
发电厂检修规程 SD230-87
中华人民共和国水利电力部
关于颁发《发电厂检修规程》(SD 230—87)
的 通 知
(87)水电电生字第74号
目 录
1 总则....................................................................................................................................... 1 2 发电厂设备检修的间隔、项目和停用日数 ............................................................................. 3 3 检修计划、备品配件和检修费用 ............................................................................................. 6 4 大修工程施工管理和检修总结 ................................................................................................. 8 附录A 锅炉、汽轮机、汽轮发电机、水轮发电机组大修 ....................................................... 19 附录B 设备大修参考项目表 ....................................................................................................... 21 附录C 发电设备评级办法 ........................................................................................................... 41 附录D 设备大修技术文件种类表 ............................................................................................... 47
我部1978年颁发的《发电厂检修规程》，对搞好设备检修、保证机组安全、经济运行发挥了重要作用。但是，随着机组容量的增大和检修体制的变化以及检修管理方法的进步，原规程已经不能完全适应当前检修工作的要求。为此，我部在广泛征求意见的基础上，对原规程进行了修订。
新修订的规程除了吸收原规程中继续适用的部分外，还补充了全面质量管理等现代检修管理方法和实行三年滚动规划等内容；明确了检修单位的职责以及集中检修体制下电厂和检修单位双方的职责；对设备检修间隔和停用日数的规定也作了变动。
现将新修编的《发电厂检修规程》正式颁发，请各电管局、电力局、发电厂认真贯彻执行。在执行中如遇到问题，请及时告我部电力生产司。原《发电厂检修规程》自即日起停止执行。
1987年7月29日
1 总则
1.1 搞好发电厂的设备检修，是保证发电设备安全、经济运行，提高发电设备可用系数，充分发挥设备潜力的重要措施，是设备全过程管理的一个重要环节。各级管理部门和每一个检修工作者都必须充分重视检修工作，提高质量意识，自始至终坚持“质量第一”的思想，切实贯彻“应修必修，修必修好”的原则，既要反对为抢发电量或回避事故考核而硬撑硬挺及为抢工期而忽视质量，该修的不修；又要防止盲目大拆大换，浪费资财。
1.2 根据当前我国检修管理水平和设备的实际情况，现阶段仍然要贯彻以“预防为主，计划检修”的方针。各级检修管理部门要加强检修计划的管理工作，搞好调查研究，力求检修计划切实可行；电厂要严肃对待检修计划，不要随意变更或取消，如非变动不可，应提前报请上级主管部门批准。
应用诊断技术进行预知维修是设备检修的发展方向，各主管局可先在部分管理较好且检修技术资料较完整的电厂进行试点，积累经验，逐步推广。 1.3 发电厂的检修组织机构分集中制和非集中制两类。
检修体制应符合改革精神，本着因厂制宜、讲求实效、队伍精悍、指挥灵活、提高劳动生产率的原则进行。集中制检修是发展方向，有条件的电厂要逐步实施；新建电厂原则上要按不同形式的集中制设立检修机构。 1.4 检修机构的基本职责是：
1.4.1 在规定的期限内完成规定的全部作业，达到质量标准，确保机组安全、经济运行以及建筑物和构筑物的牢固。
1.4.2 尽量采用先进工艺和新技术、新方法，积极推广新材料、新工具，提高工作效率，缩短检修工期。
1.4.3 节约原材料，做到合理使用，避免错用、浪费，及时修好替换下来的轮换备品和其他零部件。
1.4.4 文明施工，遵守有关规章制度，爱护设备、建筑物以及施工机具。 1.4.5 经常了解、检查设备和系统状况，及时消除设备缺陷。
1.4.6 为电厂检修而组织的独立核算的检修单位，应保证及时承接并完成电厂的计划检修和事故抢修任务。
1.4.7 搞好安全工作，防止发生人身和设备损坏事故。 1.4.8 电厂和检修机构应做好以下检修管理的基础工作：
a.根据本规程和主管部门的有关规程制度，结合当地具体情况制订实施细则或作出补充规定(制度)，如检修质量标准、工艺方法、验收制度、设备缺陷管理制度、设备异动管理办法、备品管理办法等。
b.搞好设备和系统技术资料、技术状况的管理，要收集和整理好设备、系统原始资料，实行分级管理，明确各级职责。
c.加强对检修工具、机具、仪器的管理，做到正确使用，加强保养，并努力进行研制或改进。
d.搞好材料和备品的管理工作。
e.建立和健全大修人工、材料消耗和费用统计管理制度。f.建立设备状态监督制度。
g.严格执行各项技术监督制度，做到方法正确、数字准确、结论明确。
h.对建筑物、构筑物的管理，要做到定期观测、检查，并做好记录归档(水力发电厂的水工建筑按专门规定执行)。
i.加强检修队伍的建设，提高职工素质，造就一支责任心强，懂得科学管理，有实践经验和技术精、工作作风好的检修队伍。j.不断完善检修经济承包责任制。
1.4.9 检修管理人员要努力提高管理水平，学习国内外先进的检修管理方法，开展全面质量管理、定额管理、目标管理和寿命管理等，应用运筹学、网络图、诊断技术等手段，把检修管理提高到新的水平。
1.4.10 必须严格执行验收制度，加强质量管理。已开展全面质量管理的单位，按PDCA(P——计划，D——实施，C——检查，A——总结)循环的C环节进行验收；尚未开展全面质量管理的单位，继续按“三级验收”规定的办法验收。
1.4.11 为了促进发电设备的技术进步，可靠地延长设备使用时间，应逐步把检修工作目标从以恢复设备性能过渡到改进设备性能，实现以技术进步为中心的改进性检修。
1.4.12 为保证检修工作的顺利进行，无论由哪种形式的检修机构负责检修工作，电厂都要动员和组织生技、劳资、物资、财务和后勤部门的力量，根据检修的要求，制订切实可行的措施，密切协作，促进检修工作的完成。
对内部承包和外部承包工程，电厂要严格审查承包单位的资格，并与承包单位按经济合
同法签订包括检修项目、工期、质量、材料、费用等内容的合同。 1.4.13 检修人员应达到“三熟、三能”。“三熟”是：熟悉系统和设备的构造、性能；熟悉设备的装配工艺、工序和质量标准；熟悉安全施工规程。“三能”是：能掌握钳工手艺；能干与本职业密切相关的其他一两种手艺；能看懂图纸并绘制简单零部件图。
为了适应高参数、大容量机组的检修需要，并促进老机组的技术改造，必须提高工人、技术人员和管理人员的素质：技术工人一般应是技工学校毕业生；技术人员和管理人员的文化水平要达到中等专业学校毕业及以上水平；对原有的检修人员和新招收的人员，都应通过有计划的培训，提高他们的理论水平和实际工作能力。
1.4.14 集中检修机构，应积极创造条件使检修作业逐步地向专业化、标准化、工厂化过渡。
2 发电厂设备检修的间隔、项目和停用日数
2.1 主要设备的检修间隔
2.1.1 设备检修间隔主要决定于设备技术状况。发电厂的生产设备分为主要设备和辅助设备：主要设备系指锅炉、汽轮机、水轮机、燃气轮机、发电机、主变压器等主设备及其附属设备；辅助设备是指主要设备以外的生产设备。一般情况下，主要设备的检修间隔应按表1的规定执行。
表1 发电设备大、小修间隔
2.1.2 在执行表1的检修间隔时，应根据不同情况区别对待。
2.1.2.1 对技术状态较好的设备，为充分发挥设备潜力、降低检修费用，应积极采取措施逐步延长检修间隔，但必须经过技术鉴定，并报主管局批准，方可超过表1的规定。
2.1.2.2 为防止设备失修，确保设备健康，凡设备技术状况不好的，经过鉴定并报主管局批准，其检修间隔可低于表1规定。
允许大修间隔超过或低于表1规定的参考条件见附录A。
2.1.2.3 经常启停(每周不少于两次)或调峰幅度大于40%的机组；累计运行15万h及以上的机组；在完善化前制造且未经较大改进的、容量为125MW及以上的国产机组；燃用劣质燃料(工作质含硫高于2.5%或低位发热量低于14654kJ/kg，即3500kcal/kg)的机组，经主管局审查批准后，其大修间隔可低于表1的规定。这类机组视具体情况，每年还可增加一次小修，或一次小修的停用日数。100MW及以上机组如需缩短检修间隔和增加小修次数(或天数)时，还须报网局审批。
2.1.2.4 长期停用的机组(如某些燃油机组)检修间隔不受表1限制，可根据机组的技术状况，参照附录A的条件来确定检修时间。
2.1.2.5 新机组或迁装机组自投产之日起三年内，大、小修间隔由主管局根据机组具体情况决定。但其主设备第一次大修时间一般应按下列规定进行：
a.锅炉、汽轮发电机组、水轮发电机组，正式投产后1年左右；b.主变压器，根据试验结果确定，但一般为投产后5年左右。
2.1.2.6 在事故抢修中，若已处理了设备和系统的其他缺陷，经鉴定确认能继续安全运行较长时间，允许将其后的计划大、小修日期顺延，但需报主管局批准。
2.1.2.7 经主管局同意，允许部分机组将两次小修合为一次、或一次小修分为两次进行，但小修累计时间不得超过年计划小修总停用日数。
2.1.2.8 进口机组一般可按制造厂家规定的检修间隔执行。
2.1.2.9 在高水头且多泥沙环境下工作的水电机组，大修间隔允许减至两年。 2.2 主要设备的检修项目
2.2.1 发电厂主要设备的大修项目分标准项目和特殊项目(包括重大特殊项目)两类。 2.2.1.1 标准项目的主要工作内容如下：
a.进行较全面的(对已掌握规律的老机组可以有重点地进行)检查、清扫、测量和修理；b.消除设备和系统的缺陷；
c.进行定期的监测、试验和鉴定，更换已到期的、需要定期更换的零部件；
d.“四项”监督中一般性检查工作(对运行15万h以上的火电机组要注意老化问题)。 2.2.1.2 特殊项目(指标准项目以外的检修项目)中，技术复杂、工作量大、工期长、耗用器材多、费用高或对系统设备结构有重大改变的项目称为重大特殊项目。重大特殊项目的检修由电厂提出报告，经主管局批准后列入大修计划。
2.2.2 主要设备的小修项目也分为标准项目和特殊项目。标准项目的主要内容是： 2.2.2.1 消除运行中发生的缺陷；
2.2.2.2 重点清扫、检查和处理易损、易磨部件，必要时进行实测和试验； 2.2.2.3 锅炉受热面的防磨、防爆检查；
2.2.2.4 大修前的那次小修，应进行较细致的检查和记录，并据此确定某些大修项目。小修标准项目由主管局制定；特殊项目由电厂根据实际情况自行决定。 2.3 发电机组的检修停用日数
2.3.1 检修停用日数系指机组从与系统解列(或退出备用)到检修完毕正式交付调度(或转入备用)的总时间(d)。
机组大、小修标准项目的停用日数，一般按表2、表3规定执行。
注：( )中的数系指该容量等级的高温高压机组停用日数。
表3 水轮发电机组标准项目检修停用日数d
2.3.2 符合以下情况者，表2和表3的停用日数要乘以下述系数进行修正，若同时具备2.3.2.3～2.3.2.9中两项及以上者，则只取其中系数最大的一项。 2.3.2.1 背压式汽轮发电机组0.9； 2.3.2.2 燃油(气)发电机组0.9；
2.3.2.3 抽汽供热汽轮发电机组1.2；
2.3.2.4 调峰幅度经常大于40%的机组1.1，二班制运行机组1.2；
2.3.2.5 累计运行时间达15～20万h的汽轮发电机组1.1，20万h以上者1.2； 2.3.2.6 配置液态排渣锅炉的汽轮发电机组1.1；
2.3.2.7 对于多泥沙河流的磨蚀严重的水轮发电机组修正系数不大于1.3； 2.3.2.8 100MW以下的双缸汽轮机组1.15； 2.3.2.9 燃用高硫燃料的汽轮发电机组1.15。
2.3.3 母管制锅炉的检修停用日数根据与其铭牌出力所对应的凝冷式汽轮发电机组容量在表2中查出，并可酌情增加1～3d。
2.3.4 特殊项目是否需增加停用日数，取决于大修网络图关键线路上工期最长的特殊项目的工期数是否超出标准项目的停用日数，超出时方可适当增加。特殊项目的工期由主管局审定。 2.3.5 设备大修间隔如超过表1规定，必要时，允许将两次大修之间的某次小修的停用日数增加2～3d。
2.3.6 小修停用日数按下列规定执行：两次小修合并为一次进行的，停用日数为两次小修停用日数之和；特殊情况下须将一次小修分两次进行的，要经主管局批准，并且各次小修实际停用日数之和不得超过同期计划小修的规定的停用日数总和(有大修年为一次小修，无大修年为两次小修的总停用日数)。一次小修分两次进行的机组，全年小修次数不得超过下列规定：有大修年不多于两次；无大修年不多于三次。
2.3.7 新投产机组第一次大修的停用日数，由主管局确定。
2.3.8 单元制系统中，主变压器及其断路器的检修停用日数，应不超过与其配套的主要设备检修的停用日数。
2.3.9 检修作业开始后，若因故需要增加停用日数，发电厂或检修队应于机组计划停用日数过半前，向主管局提出申请，批准后方能增加。
2.3.10 季节性运行的水轮发电机组和燃气轮发电机组的检修停用日数不受表3的约束，但以不影响发电和电力调度为界限。
注：①表2和表3中的检修停用日数已包括带负荷试验所需的时间。 ②因设备更换重要部件或其他特殊需要，在检修投运后进行调整试验或检查所需时间不包括在内。
2.4 辅助设备和公用系统的检修
2.4.1 对待辅助设备和公用系统的检修必须和主设备同样重视。火电厂的上煤、制粉、燃油、除灰、给水、循环水、冷却水、排水、水处理、供热、制氢、厂用电设备及其系统，水电厂的供水系统、压缩空气系统和进水口闸门等设备，对机组安全、稳定运行至关重要，必须经
篇二：发电厂检修规程
关于颁发《发电厂检修规程》的通知
(78)水电生字第49号
我部一九六五年重新修订的《火力发电厂检修规程》(试行本)，自试行以来，对搞好设备检修，保证安全、经济运行，曾起了积极的推动作用，基本上是行之有效的。但是由于“四人帮”的干扰破坏，近几年来，一些老电厂有章不循；许多新电厂得不到规程，无章可循。设备检修工作放松了，不少电厂出力下降，设备完好率低，事故增加，煤耗升高。 为了适应当前电力工业迅速发展的需要，实现新时期的总任务，必须大力搞好设备检修，充分发挥设备的潜力，提高安全、经济运行水，我部最近根据《中共中央关于加快工业发展若干问题的决定》(草案)的精神，在广泛征求意见的基础上，对原规程(试行本)作了修订和补充。这次修订，吸收到了自原规程颁发试行以来检修工作的经验，补充了在关水力发电厂，的及新型、大型机组的内容，并对部分条文的文字作了精简。现将修改以后的新规程定名为《发电厂检修规程》正式颁发执行。希各有关局、厂结合企业整顿，组织学习，并认真贯彻执行。原《火力发电厂检修规程》(试行本)自即日起停止试行。 一九七八年六月六日
目 录
第一章 总则
第二章 检修间隔、项目和停用日数
第三章 检修计划
第四章 检修准备工作
第五章 施工管理
第六章 质量验收与检修总结
第七章 基层建设、基础工作、基本功
附表一 年度大修计划汇总表
附表二 年度检修计划进度表
附表三 年度设备检修安排报告
附表四 锅炉大修总结报告
附表五 汽轮机大修总结报告
附表六 发电机(包括汽、水轮发电机)大修总结报告
附表七 水轮机大修总结报告
附表八 主变压器大修总结报告
附录一 锅炉、汽轮机、汽轮发电机、水轮发电机组大修间隔允许超过表1上限和低于表1下限的参考条件
附录二 设备大修参考项目表
附录三 设备大修技术资料种类表
附件 电力设备评级办法
第一章 总 则
第1条 发电厂的设备检修，是提高设备健康水平，保证安全、满发、经济运行的重要措施。各电厂必须把检修工作作为企业管理的一项重要内容来抓。根据电力工业特点，要掌握设备规律，坚持以预防为主的计划检修，不能硬撑硬挺带病运行；坚持“质量第一”，贯彻“三老四严”的精神，发实做到应修必修，修必修好，使全厂设备经常处于良好状态。
第2条 检修工作要贯彻挖潜、革新、改造的方针，在保证质量的前提下，全面实现多、快、好、省。努力做到： 质量好 经过检修的设备，能保持长期的安全、满发、经济运行，检修间隔长，临检次数少；
工效高 检修工期短，耗用工时少；
用料省 器材消耗少，修旧利废好；
安全好 不发生重大人身、设备事故，一般事故也少；
多发电 作到安全满发、稳发，经济运行。
各电厂要按照以上的要求，对检修工作进行全面的评价，开展竞赛，表扬先进，努力创造新纪录，赶超国内外的先进水平。
第3条 检修工作在党委领导下，由厂长全面负责，并指定一位主管生产的副厂长事总工程师具体组织管理，各职能部门和车间(分场)、班组按职责分工，密切配合，共同搞好。工人要参加管理。干部要深入现场，调查研究，参加劳动，有时解决问题。职能部门要做到“三个面向”、“五到现场”。
第4条 检修工作要以大庆为榜样，坚持“三老四严”的作风，建立明确的责任制，培养一支具有高度政治觉悟、严格劳动纪律、过硬技术本领、优良工艺作内的检修队伍，保证检修任务的顺利完成。
第5条 检修工作要依靠群众，实行干部、工人、技术人员三结合。生产人员要象战士受护武器一样受护设备。运行人员要用好设备，并且参加检修，熟悉设备；检修人员要熟悉运行，修好设备。两者要密切配合，加强协作。
第6条 要围绕竹产关键，积极开展技术革亲和技术革命，不断提高检修质量，改进设备，改进工艺，改进工具，提高检修机械化水平。
第7条 邻近的电厂，要积极创造条件，推行各种形式的集中检修。
第二章 检修间隔、项目和停用日数
第一节 主要设备的检修间隔
第8条 设备检修的间隔，应根据设备的技术状况和部件的磨损、腐蚀、劣化、老化等规律，以及燃料、运行、维修等条件慎重地确定。一般应按表1的规定安排检修。
为了保证设备健康，合理安排检修，年运行小时在6000小进以下的，基设备大、小修，可参照下列条件掌握。
表1 发电设备大、小修间隔
注 大、小修间隔采用日历时间或运行小时，由各主管局根据具体情况确定。
(一)年运行小时在5000～6000小时的锅炉、汽轮发电机组和水轮发电机组，如设备技术状况较好，可用运行小时间隔；技术状况较差的，可用日历间隔。
(二)开停机频繁或备用时间较多的机组(年运行小时在5000小时以下)，其检修间隔可根据设备技术状况和运行情况另定。
(三)单元制的机、炉应同时进行检修。机、炉检修间隔长短不一致时，可按间隔短的安排。
第9条 为了充分发挥设备效益，降低检修费用，各厂应积极采取措施逐步延长设备检修间隔。凡设备健康水平较好的，经过鉴定，并报主管局批准，其检修间隔允许超过表1规定的上限。
第10条 为了防止设备失修，确保设备健康，凡设备技术状况不好的，经过鉴定，并报主管局批准，其检修间隔可低于表1下限的规定。
允许大修间隔超过表1上限和低于表1下限的参考条件见附录一。
第11条 新投产或迁装的主要设备，第一次大修的时间按下述规定执行。
(一)锅炉、汽轮发电机组、水轮发电机组：正式投入运行后一年左右。
(二)主变压器：正式投入运行后五年左右。
第12条 新型机组在未掌握其性能和积累一定的运行维护经验以前，大、小修间隔由主管局根据具体情况决定。
第二节 主要设备的检修项目
第13条 各发电厂应摸清设备情况，掌握规律，根据应修必修，修必修好的原则，合理确定大修项目。既要防止该修不修，影响设备的正常运行；也要防止不必要的大拆大换，造成浪费。
大修项目分为一般项目和特殊项目两类。
(一)一般项目，主要工作内容如下：
1.进行较全面的检查、清扫和修理(对于已掌握规律的老机，可以有重点的进行)；
2.清除设备缺陷；
3.进行定期的试验和鉴定；
(一)般检修项目包括常修项目(即每次大修都需进行检修的项目)和不常修项目(即不一定每次都要检修的项目)。
篇三：火电厂脱硫设备检修规程规范
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前 言
本标准是根据国家电力公司《电业安全工作规程(热力和机械部分)》、《火力发电机组检修规程》、《防止电力生产重大事故二十五项重点要求》、《电力建设施工及验收规范（脱硫篇）》和国家经贸委《检修导则》等、设备制造厂技术要求，****公司管理制度中有关规定编写而成。
本标准规定了检修人员在检修过程中检修处理问题的方法过程中处理问题的方法，杜绝违章作业，保证员工在电力生产活动中的人身安全。本标准由*******公司设备部编写。
本标准由******公司安全生产管理部归口。
本标准起草： 本标准初审：本标准审定： 本标准批准：
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文 件 目 录
前言 ····················································································································································· Ⅰ 1 范围 ················································································································································· 1 2 设备概况 ·········································································································································· 1 3 设备简介 ·········································································································································· 1 4 增压风机 ·········································································································································· 2 5石灰石浆液制备系统主要设备 ············································································································ 2 5.1 设计原则 ········································································································································· 2 5.2石灰石粉贮仓 ··································································································································· 2 5.3石灰石浆液箱 ··································································································································· 2 6.1 石灰石-石膏湿法烟气脱硫原理 ······································································································· 2 6.2 吸收塔技术规范 ······························································································································ 2 6.3结构概述 ·········································································································································· 3 6.4 FGD的检修 ··································································································································· 3 6.4.1喷淋区域检查 ································································································································ 3 6.4.2吸收塔浆池的检查检修 ·················································································································· 3 6.4.3除雾区的检查 ································································································································ 4 6.4.4检修质量标准 ································································································································ 4 7 真空皮带脱水机 ································································································································· 5 7.1真空皮带脱水机工作原理 ················································································································· 5 7.2 真空皮带脱水机的结构 ··················································································································· 5 7.3设备技术规范 ··································································································································· 5 7.4真空皮带脱水机的检修 ···················································································································· 6 7.4.1脱水机架构、脱水皮带支撑的检修 ······························································································· 6 7.4.2头部滚筒、尾部滚筒、滤布返回滚筒、滤布支撑滚筒的检修 ······················································· 6 7.4.4真空槽和密封的检修 ····················································································································· 6 7.4.5滤布的检修 ···································································································································· 7 7.4.6滤布与滤饼冲洗装置的检修 ·········································································································· 7 7.4.7驱动装置减速机检修 ····················································································································· 7 7.4.8真空泵的检修 ································································································································ 7 8 旋流器 ················································································································································ 8 8.1旋流器的工作原理 ···························································································································· 8 8.2旋流器的结构 ··································································································································· 9 8.3设备技术规范 ··································································································································· 9 8.4 FC40-5-1/A-D/8废水旋流器的检修······························································································ 10 8.5 VV100-8-1型分级旋流器的检修 ···································································································· 10 8.6旋流子常见故障及处理办法 ··········································································································· 11 9布袋除尘器 ······································································································································· 14 9.1布袋除尘器工作原理 ······················································································································ 14 9.2布袋除尘器的结构 ·························································································································· 14 9.3设备技术规范 ································································································································· 14 9.4布袋除尘器滤布袋的安装 ··············································································································· 15
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9.5布袋除尘器常见故障及处理方法 ···································································································· 15 10 搅拌器 ············································································································································ 17 10.1 搅拌器结构 ·································································································································· 17 10.2 型式及型号 ·································································································································· 17 10.3搅拌器的检修 ······························································································································· 17 10.3.1拆卸步骤 ···································································································································· 17 10.3.2 回装安装步骤 ··························································································································· 17 11 吸收塔循环泵 ································································································································· 17 11.1泵的作用 ······································································································································· 17 11.2泵的结构 ······································································································································· 17 11.3设备技术规范 ······························································································································· 18 11.4 600DT—A82型再循环泵的检修前准备 ························································································ 18 11.5拆卸的准备 ··································································································································· 18 11.6拆卸 ·············································································································································· 19 11.7检查 ·············································································································································· 20 11.8重新装配 ······································································································································· 20 11.8.1轴承的重新装配 ························································································································· 20 11.8.2填料箱盖的装配 ························································································································· 21 11.8.3锥形密封腔的装配 ····················································································································· 21 11.8.4动力密封的装配 ························································································································· 21 11.8.5开式叶轮的安装 ························································································································· 22 11.8.7后拔出组件的安装 ····················································································································· 22 11.9常见故障及处理 ···························································································································· 22
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1 范围
本标准规定了****厂2×210MW燃煤供热机组烟气脱硫系统设备简介和增压风机、吸收塔、真空皮带脱水机、旋流器、布袋除尘器、搅拌器、单级离心泵、立式长轴泵等设备的结构、工作原理、技术规范、检修工艺及质量标准等。
本规程适用于脱硫系统设备的检修。 2 设备概况
****厂2×210MW燃煤供热机组，按照环保部门要求进行烟气脱硫。2×210MW燃煤机组脱硫装置布置于两台锅炉共用的烟囱之后，脱硫系统为后置式石灰石——石膏湿法全容量烟气脱硫系统。烟气脱硫装置引进奥地利（AEE）工艺技术。每台锅炉设计烟气处理量分别为1070000（标准，湿态，6%O2）Nm3/h，脱硫率为95%以上。
锅炉烟气经过电除尘器后，由静叶可调轴流引风机送入锅炉主烟道，在锅炉主烟道中设置烟气挡板（烟气旁路挡板）。在脱硫运行时，烟气旁路挡板关闭，烟气由脱硫增压风机增压后，进入吸收塔进行脱硫，脱硫后的净烟气进入锅炉主烟道，经烟囱排放；在不运行脱硫时，烟气旁路挡板开启，烟气直接通过锅炉主烟道由烟囱排放。
该脱硫装置机务主要工艺系统包括以下内容：石灰石浆液制备系统、烟气系统、SO2
吸收系统、事故浆液系统、石膏脱水系统、工艺水系统、杂用和仪用压缩空气系统等。 3 设备简介
3.1 石灰石浆液制备系统
用卡车将石灰石粉（石灰石粒径≤0.044mm、90%通过325目）送至钢制石灰石储仓内，再由叶轮给粉机送至石灰石浆液箱内，同时加入滤液和工艺水搅拌混合，满足设计所需要的石灰石浆液浓度，然后经石灰石浆液泵送至吸收塔。
该系统主要设备、叶轮给粉机、石灰石浆液泵、石灰石旋流器、再循环浆液泵等。 3.2 烟气系统
从锅炉引风机后的总烟道上引出的烟气，通过增压风机升压送入吸收塔。在吸收塔内脱硫净化，经除雾器除去水雾后，再送入主体发电工程的烟道，经烟囱排入大气。在主体发电工程烟道上设置旁路挡板门，当锅炉启动、FGD装置故障、检修停运时，烟气由旁路挡板经烟囱直接排放。
该系统主要设备有：增压风机、烟气挡板门等。 3.3 SO2 吸收系统
吸收塔采用喷雾塔。吸收塔浆池与塔体为一体结构。 石灰石浆液通过循环泵从吸收塔浆池送至塔内喷嘴系统，与烟气接触发生化学反应吸收烟气中的SO2 ，在吸收塔循环浆液池中利用氧化空气将亚硫酸钙氧化成硫酸钙。石膏排出泵将石膏浆液从吸收塔送到石膏脱水系统。
该系统主要设备有：吸收塔、再循环泵、石膏排出泵、氧化风机、吸收塔搅拌器等。 3.4 事故浆液系统
FGD岛内设置一台事故浆液罐。事故浆液罐的容量能满足吸收塔检修排空时和其他浆液排空的要求，并作为吸收塔重新启动时的石膏晶种。
FGD装置的浆液管道和浆液泵等，在停运时进行冲洗，其冲洗水就近收集在各个区域设置的集水坑内，然后用泵送至事故浆液罐或吸收塔浆池。 3.5 石膏脱水系统
吸收塔的石膏浆液通过石膏排出泵送入石膏水力旋流器浓缩后进入石膏浆液箱，再分配
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