毕业论文-cstr反应器抗扰动能力的稳态模拟

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1、CSTR反应器抗扰动能力的稳态模拟与动态模拟研究摘要：本文以环氧丙烷水合法制1，2-丙二醇为例，对CSTR反应器抗扰动能力的稳态模拟和动态模拟进行了对比研宂，分析了进料温度扰动对CSTR反应器转化率的影响。研宂结果表明：当反应器在进料温度7^297.15K的条件下稳定操作时，若进料温度受到扰动升高时，稳态模拟与动态模拟的结果一致，转化率变化较小；当进料温度受到扰动降温幅度＜4.00K时，稳态模拟与动态模拟的结果一致，转化率的变化也较小：当进料温度受到扰动降温幅度彡4.00K但仍高于反应器的熄火温度时，稳态模拟结果S示反应器仍处于较高转化率的操作状态，转化率变化较小，但动态模拟结果表

2、明反应器已从高转化率的操作状态跌落至低转化率的操作状态，此时，稳态模拟与动态模拟的结果不符；当进料温度受到扰动降至熄火温度以卜时，稳态模拟与动态模拟的结果一致，反应器均从高转化率操作状态跌落至低转化率操作状态。通过对比可知，动态模拟比稳态模拟更能真实地反映CSTR反应器的抗扰动能力。文献标识码：A关键词：CSTR；抗扰动能力：稳态模拟；动态模拟中图分类号：TQ018ABSTRACT:Takingthehydrationofpropaneoxide(PO)toproduce1,2-propyleneglycolasacasestudy，acomparisonbetweensteady

3、-statesimulationanddynamicsimulationofantidisturbanceabilityforCSTRwasmadebythispaper.TheinfluencesofdifferentdisturbanceamplitudeoffeedstocktemperatureonconversionofPOfortheoperatingstateofCSTRwerecalculatedbytwokindsofsimulationmethods.Thesimulationresultsdemonstratedthatwhenthefeedstocktem

4、peratureofCSTRwas297.15K，ifthefeedstocktemperatureroseduetotemperatureperturbation,theconversionofPOwouldbesamebysteady-statesimulationanddynamicsimulationontheoperationstateofCSTR，andtheconversionofPOwouldshifttoaslighthighvaluethantheoriginalstate，thesimilarresultscouldbeobtainedwhentheampli

5、tudeoffeedstocktemperaturereductionwaslessthan4.00K.Moreover，whentheamplitudeoftemperaturereductionwasmorethanorequalto4.00K，butthefeedstocktemperaturewasstillhigherthantheextinctiontemperatureofCSTR，theresultofsteady-statesimulationindicatedthattherewasaslightreductionfortheconversionofPO,whi

6、letheresultofdynamicsimulationdemonstratedthattheoperatingstateofCSTRwoulddroptotheoperatingstatewithlowerconversionofPO.Therefore，theresultofsteady-statesimulationwasinconsistentwiththatofdynamicsimulation.Furthermore,whenthefeedstocktemperaturewasreducedtolessthantheextinctiontemperatureofCS

7、TR，thereexistedthesameconversionvalueofPObytwokindsofsimulationmethods，andinthiscase，theoperatingstateofCSTRhaddroppedtotheoperatingstatewithalowerconversionofPO.Fromabovecomparisonofsimulationresults，itwasknownthatthedynamicsimulationm