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:2003209203:(19712),,,,(,830019):TP273:B:100828261(2004)02200592030HV803,,,,,,,,,,,,,,,,PLC11:(1),(2),,(3),,(4),50t,1HV8032D100,HV8032D000,HV8032D400,30kW,3.7kW,,,,,,,,,,,2,,,,PLC,2.12,,PLC1722004204PolyesterIndustryVol.17No.2Apr.2004©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,2,22:(1),(2),,,2.24,4,,,,,,PLC,,,2.3,,,AA,,,,,32000HV803,,,,:3,1,7,,PLC2,H9[]H6[],[603],[302],,2:2(1),,(2)2s4s,302,603,,,,,,:2s2s6s2s4,,,,;,6s,,,,230617©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3,,1s,,:(1)10s,;(2),1s(47)3Table3Comparisonofproductionquality/(dLg-1)0.6420.0050.6410.642w()/%0.050.040.04/(molt-1)2817.021.2w(DEG)/%1.21.111.04L7280.080.5b4.024.83.9/260261.0261.2,,;(2),350t/d,1;(3)2;,DEG,,;(4)3,,:[1],,,.[J].,1981,(4):5210,18.[2].[J].,1984,(5),20224.TheproductioncontrolundertheconditionoffirstesterificationreactorpressurecontrolvalueuncontrollableJIASheng2lin,WANGJin2bin,ZHUXiu2ling,LIDe2gang(JinanZhenghaoPolyesterCoLtd,Jinan250100,China)Abstract:Someemergencymeasureswereused,whentheesterificationpressurewasunabletocontrol,Acontrolvalvewasaddedonthewastegaspipeline,thepressureoftheesterificationsystemwascontrolledbyadjustingthedischargeca2pacityoffoulwastegas,therunningofthemachinewascontinued.Thewholeesterficationsystemworkedunderpositivepressure,theprocessparameterswereadjusted.Therewerenoeffectontheesterificationrateandthechipqualityindex2es.Keywords:polyester;esterification;pressurecontrolvalve162:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.