焦炉加热控制系统设计.doc

内蒙古科技大学毕业设计说明书（毕业论文）焦炉加热控制系统设计摘要焦炉的加热过程是单个燃烧室间歇，全炉连续，受多种因素干扰的热工过程。其控制系统是典型的大惯性、非线性、时变的复杂系统，因此如何优化焦炉加热过程控制、降低炼焦能耗、确保焦炭均匀稳定成熟、延长焦炉使用寿命，仍然是炼焦业界重大难题。本文在深入进行焦炉加热燃烧过程工艺分析的基础上，根据控制系统的设计要求，提出了控制系统的总体结构。系统采用西门子S7-300PLC对各类参数（温度、压力和流量等）实施在线检测，并采用MCGS组态平台完成工艺流程的实时监视和控制。由于立火道温度直接测量很困难，所以根据蓄热室顶部温度建立立火道温度软测量模型，间接测量立火道温度。本控制系统满足了实际应用的需要，对提高焦炉生产率和焦炭质量,降低能耗及延长焦炉寿命,减少炼焦生产中的环境污染以及改善劳动条件具有重要的意义。可以为企业创造显著的经济效益和社会效益。关键词：焦炉，软测量，MCGS组态，PLC；CokeovenheatingcontrolsystemdesignAbstractTheheatingprocessofcokeovenwhichisasinglechamberintermittentlyandacontinuousfurnace,isdisturbedbymanyfactors.Itscontrolsystemisatypicaloflargeinertia,nonlinear,andtime-varyingcomplexsystem.Sohowtooptimizetheprocessofcokeovenheatingcontrol,reducecokeconsumptiontoensurethestabilityofcokeevenlyripeandextendtheservicelifeofcokeisstillamajorproblem.Thispassageisaboutcokeovenheatingin-depthanalysisofcombustionprocessonthebasisofthecontrolsysteminaccordancewiththerequirementsofacontrolsystemfortheoverallstructure.SystemusesaSiemensS7-300PLCimplementonlinetestingonvariousparameters(temperature,pressureandflow,etc.),andcompleteplatformconfigurationwhichusingMCGSprocessreal-timemonitoringandcontrol.Becausedirectmeasurementonfluetemperatureisdifficult,accordingtothetemperatureatthetopofregeneratorfluetemperatureitcanestablishlegislationsoft-sensormodeltofinishanindirectmeasurementoffluetemperaturelegislation.Thecontrolsystemmeetstheneedsofpracticalapplications,whichimprovingthequalityofcokeovencokeproductivity,reducingenergyconsumptionandextendingthelifeofcokeoven,What'smore,itcanreduceenvironmentalpollutionincokeproductionandimprovetheworkingconditionsThisisofgreatsignificance.Itcancreatesignificanteconomicandsocialbenefits.Keywords:coke,softmeasurement,MCGSconfiguration,PLC;目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc232848738"摘要PAGEREF_Toc232848738\hIHYPERLINK\l"_Toc232848739"AbstractPAGEREF_Toc232848739\hIIHYPERLINK\l"_Toc232848740"第一章引言PAGEREF_Toc232848740\h1HYPERLINK\l"_Toc232848741"1.1研究背景