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0摘要烟气排放连续监测系统（CEMS）是监测烟气污染物排放的现代化手段。本文基于工程背景，简述了CEMS的国内外发展现状，介绍了CEMS结构组成和工作原理，研究与探讨了火力发电厂烟气排放连续监测系统的设计，给出了火力发电厂烟气排放监测系统软、硬件的设计思路，并实现监控系统的各项控制功能。在此基础上设计实现的以上位机、可编程控制器为核心的具有烟气排放连续监测能力的监控系统，以期实现电厂烟气排放情况进行实时监测。阐述了火力发电厂烟气排放连续监测系统的总体方案，顺序控制设计法在PLC梯形图程序设计中的应用，重点利用MCGS组态软件设计上位机监控软件，给出了使用组态软件对监控画面组态的方法。上位机软件具有强大的功能和友好的用户界面，实现了运行参数流程与列表显示、报警提示、历史查询、参数曲线跟踪等功能。自主设计了由电气和气动元件以及PLC组成的控制系统,并对该系统进行了调试，最后对火力发电厂烟气排放连续监测系统的应用进行了展望。关键词：烟气排放连续监测；可编程控制器；MCGS1AbstractContinuousEmissionMonitoringSystem(CEMS)ismonitoringthegaspollutantemissionsofmodernmeans.Basedonengineeringbackground,outlinesthedevelopmentofCEMSstatusathomeandabroad,introducesthecomponentsandworkingprinciplesofCEMSstudyofthethermalpowerplantfluegasemissionsandcontinuousmonitoringsystem,givesthepowerplantfluegasemissionsmonitoringsystemsoftwareandhardwaredesignideas,andimplementedthemonitoringsystemcontrolfunctions.Onthisbasis,designandimplementationoftheabovebitmachines,programmablecontrollerasthecoreofaContinuousEmissionMonitoringSystemmonitoringcapacityinordertorealizereal-timepowerplantfluegasemissionsmonitoring.Describedthepowerplantfluegascontinuousemissionmonitoringsystemoftheoverallprogram,sequentialcontroldesignmethodinthePLCladderprogramdesign,focusingonsoftwaredesignusingMCGSconfigurationPCmonitoringsoftwareisgivenonthemonitorusingtheconfigurationsoftwarescreenconfigurationmethod.PCsoftwarehaspowerfulfunctionandfriendlyuserinterface,processandoperatingparameterstoachievealistofdisplay,alarming,historicalqueries,parametriccurvetrackingfunctions.IndependentlydesignedbytheelectricalandpneumaticcomponentsandcontrolsystemconsistingofPLC,andthesystemwasdebugged,thelastofthePowerPlantContinuousEmissionMonitoringSystemwerereviewed.Keywords:ContinuousEmissionMonitoring;programmablecontroller;MCGS2目录摘要..............................................................................................................................................................0Abstract..............................................................................................................................................................1第一章绪论........................................................................................................................................................41.1烟气排放连续监测的意义...................................................................................................................41.2烟气排放连续监测技术的发展...........................................................................................................51.2.1国外发展现状...........................................................................................................................51.2.2我国发展现状...........................................................................................................................51.2.3火电厂烟气监测现状...............................................................................................................51.3本文的主要工作...........................................................................................................................6第二章烟气排放连续监测系统的原理与结构................................................................................................72.1烟气排放连续监测系统的组成...........................................................................................................72.1.1CEMS的监测项目.....................................................................................................................72.1.2CEMS的结构组成.....................................................................................................................72.2采样的基本要求...................................................................................................................................92.2.1采样工况...................................................................................................................................92.2.2采样位置...................................................................................................................................92.2.3采样孔.......................................................................................................................................92.3CEMS的技术分类.................................................................................................................................92.3.1采样式CEMS..............................................................................................................................92.3.2在线式CEMS............................................................................................................................102.3.3遥感监测系统.........................................................................................................................102.3.4稀释采样法的特点及应注意的问题.....................................................................................102.4烟尘监测子系统.................................................................................................................................112.4.1烟尘监测的目的和监测项目...................................................................