聚甲醛裝置自控設(shè)計(jì).pdf

1、Y1212782伊7t『大磐伊川犬學(xué)工程碩士專業(yè)學(xué)位論文題目聚甲醛裝置自控設(shè)計(jì)培養(yǎng)單位指導(dǎo)教師指導(dǎo)教師完成日期2007年5月日四川大學(xué)黃衛(wèi)星教授陳昌榮高工工程領(lǐng)域化學(xué)工程授予學(xué)位日期2007年6月日四川大學(xué)工程碩士學(xué)位論文ControlSystemDesignonPOMPlantGraduate：HeDeruingSupervisors：HuangWci—xing，ChertChangrongThedesignisfortheproce

2、sscontrolofPOM(polyformaldehyde)plantWithhighconcentratedformaldehydeasthematerial，thetrioxymethyleneanddioxolanewassynthesizedandwasfurtherpolymcrizedtoPOM。TheformaldehydeWaseasilyoxidizedtoformicacidTheintermediateprod

3、ucteasilycrystallizedorsclfpolymerizedtobyproductDuetocomplexityoforganicchemicalreactionaccuratemeasurementwasemphasizedThewholedesignconformedtogeneralchemicaldesignregulationsandespeciallyfocusedOntheprocesscontroldes

4、ignworktofulfillacertainobjectunderspecializedprocessconditionsSafetyandrehabmtyareimportantforcontrolsystemThemajormanufactureforDCS田istributcdControlSystem)wasselectedThedetailconfigurationofhardwarewassctbyspecialists

5、whentechnologyrequirementsweleclearsuchascontrollerperformancesizeandredundantrequirementConsideringtheimportanceoftheexplosionproofmethodandearthdesignwhichusuallycause翻h(huán)】reofthewholesystemthethesisdiscussedthegnindetai

6、landgaveouttheguidelinesforfieldconstructionThere瓣manypossibilitiesforiusizl】memselectionsdependingOntheprocessmediumandmcasurumentandcontrolrequirementsMostofinstrumentswcl“eredesignedbasedonexperienceandmcdinlncharacte

7、risticsinthethesisTheoperationforoueyearhasprovedtheireffectivenessthatthedesignexpectedTheprocessforPOMismadeupofcontinuousandbatchwayTheformerwassimilartogeneralchemicalplantwhileforthelatterthedetailedcontrolandoperat

8、iondesignsw∞carriedoutfortypicalbatchunitTheflowratecontrolwithhighaccuracyisverydifficultwhichmayrealizebythclossweightmethodAccordingtoaccumulatedexperiencesandanalysisforitsprinciple，allimprovedmethodandaprimarymathem