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DCC2,(,448039)0.8Mt/aDCC22,,,233.9/a,4:12C2,,,,,,0.8Mt/aDCC2,211,,,,,,1,[1,2],,30.8Mt/aDCC2,,-,,,,(110130),,,,,,:2004212207;:2005202201:,,1989,,20057PETROLEUMPROCESSINGANDPETROCHEMICALS36744.1,,[3],,,,0.8Mt/aDCC214.24.2.11013,,124.2.2,,,25200452,,120140175195,,1.0MPa,10011011011550%,C3,,404535,,,C3C49157109,9,252/th-190115/71.6110104238/77.675110181/6.0356.057/kW1907426062005363,%C224.3162.29C245.5929.16C324.502.10C44.431.44C51.175.02:C2N2,CO2,H2,CH44,%C216.251.37C249.0243.21C323.560.38C44.930.33C52.094.71:C2N2,CO2,H2,CH45106.2105110.2101.099.9104.0179.183.285.8371.276.578.9568.375.077.6963.270.474.71556.263.264.142.959.143.538.7066.5037.6266.1,110130,,,,6.2,,,,,,,;,,,,,0.8Mt/aDCC240F1,20,,11224,,915,91013,6.3,,,,,,,,,:(1),,,;(2),,6.4C2,C3,C3C3,,,C2,C3,4,,,,38,40,77.DCC277.162,76,,,,,,,6/506038413740/98108100110110115/MPa1.181.231.181.231.181.23/556542464347C2(),%19.3245.5949.02/th-1162010141014C2(),%1.02.000.500.534120C+3(),%3117199821220032072004207/kW3000/kW1907/kW416059004260/kW716059006167/kW16004000/th-1200500/kW100250/kW100045002400/th-160300130/h-1179.53557,,,,,,,27.2,,,,23t/h,,1.0MPa2.5t/h,170t/h,100/t,0.1/t,233.9/a,70,48,,,C3,,,1,,..,1996,13(2):45532,,./.,2000,33(6):7637683GoldenSWFulton.RevampandShutdowns.2000.951038200536APPLICATIONOFMID2REBOILERINDESORPTIONTOWEROFDCC2IIUNITHeJuncheng,GuoJingbiao(JingmenRefineryChemicalEngineeringDesignLtd,Jingmen448039)AbstractTherevampingofthedesorptiontowerinabsorption2stabilizationsystemofa0.8Mt/aDCC2IIunitinJingmenPetrochemicalCompanywasreported.Amid2reboilerwasaddedtothedesorptiontowertocombinetheadvantagesofcoldfeedandheatedfeed,theheatofthestabilizedgasolinecouldbereusedandtheheatloadofthebottomreboilerwasreduced.Theeconomicbenefitoftheapplicationofmid2reboilertechnologywas2.339MRMBperyear,andtheinvestmentcouldbereturnedin4months.KeyWords:catalyticcracker;reboiler;energyconservation;application(SHJV):3P10105Pa,0.3MPa,2532,4003PZR,3QSP,3PJH,,3QQP,3CSA(),4kPa,40400m3/h3CSL(),12kPa,0.112t/h3SZA,30kPa,30500kg/h3PWJ,3010000m3/h3SQH,3YYP,,,3YQY,,3YQQ,3CPS6hPa,10400m3/h3PS(2PS3PS)(),13Pa,10Pa3PSQ,3KPH,(),540hPa,3PCH,(),540hPa,333PZY2100m3/h33LNZ0.250m3/h33NNS0.250m3/h33YSL0.120m3/h33CTQ0.120m3/h33MGL0.110m3/h33RO0.220m3/h,150kg/d33,,,:583:310005:0571-888294078882940885956703:0571-8882940897.DCC2