常減壓裝置過程控制和控制系統(tǒng)集成.pdf

1、大連理工大學(xué)碩士學(xué)位論文常減壓裝置過程控制和控制系統(tǒng)集成姓名：姚強(qiáng)申請學(xué)位級別：碩士專業(yè)：控制工程指導(dǎo)教師：劉華毅20091201人邇理f：人學(xué)專業(yè)學(xué)侮碩十學(xué)位論文AbstractChinasdemandforpetroleumproductscontinuestomaintainarapidgrowthmomentumDistillationunitistheleadingoilrefiningequipmentPlantswithl

2、owrefineamountarereplacingwiththosewithhighamountones，such10Mt／aThusmaintenancecosts，complexityofmanagementcouldbereducedinahi釀lyextensionThedevicepoints，atsuchalargeamountofrefiningplant，areatabout4000～5000Inordertoensu

3、rethesecurityandreliability，asetofcontrolschememustbewell—designed，andtheappropriateautomaticcontrolsystemshouldbechoosenThepaperaccordingtoprocesscontrolanalysismethodandrequirementsofrefiningmajor，designedasetofcontrol

4、strategy，suchastheelectricdesaltingtemperaturebalancecontrol，thedistillationtowerpressureandtemperaturecontrol，thedistillationtowerrefluxtemperaturecontrolandfumacetemperaturecontrol，interlockandprotectioncircuitandthefu

5、rnacecombustionmanagementcontrolprogram，etcInaccordancewiththeneedsofthevariousthecontrolstrategy(somerequiresthereliabilityrealtime)andthespecialiytofinstrumentinputandoutputsignal，designedcontrolproceduresintheoverallc

6、onfigurationofthevarioussystemsSothetotalsystemisdividedintoseverlcontrolsection，suchastheDCStoachievecontinuouscontrol，SISinterlockprotectioncontroltoachieve，furnacecombustionsysteminthePLCsystemtoachieveInaddition，them

7、ethodaboutthelinks，amongvariouscontrolsystems(DCS，SIS，PLC)viaMODBUSRS485communication，wasdescriptedThedesignofthesecontrolshemewasprovedhavingverygoodperformanceinpracticeapplicationNoteaslongasthemastercontroltheoryandi