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1、石油与天然气化工第45卷第5期CHEMICALENGINEERINGOFOIL&GAS25催化裂化分馏和吸收稳定全流程模拟与优化庞利敏包江滔中国石油化工股份有限公司金陵石化分公司摘要应用Aspen-Plus流程模拟软件,对金陵石化Ⅰ催化裂化分馏和吸收稳定系统进行全流程模拟,产品的恩氏蒸馏曲线基本与实际相符。分析得出,随着分馏塔顶循、一中返塔温度的上升,汽油干点和柴油的95%馏出温度均上升,此外,在保证稳定塔塔底再沸器热负荷和分馏塔产品质量合格的前提下,模拟求得一中最小循环量和相应的油浆占总取热量的最大比例;其次,随着补充吸收剂流量的增
2、大,干气中C+的体积分数逐渐降低,解吸塔和稳定塔再沸器的热负荷逐渐增大;随着解吸塔再沸器热3负荷的增加,液态烃中C2体积分数逐渐下降,稳定塔再沸器的热负荷也随之增大。由此可知,为了保证产品质量,需调节分馏塔各相应段的取热量,并调节好吸收稳定系统的再沸器热负荷、液气比等操作参数。整个模拟与优化过程对生产具有积极的指导意义。关键词Aspen-Plus全流程模拟恩氏蒸馏曲线补充吸收剂分馏塔中图分类号:TE624.4+1文献标志码:ADOI:10.3969/j.issn.1007-3426.2016.05.006Processsimulati
3、onandoptimizationforfluidcatalyticcrackingfractionationsystemandabsorption-stabilizationsystemPangLimin,BaoJiangtao(JinlingPetrochemicalCompany,Sinopec,Nanjing210033,China)Abstract:TheAspen-Plusprocesssimulationsoftwarewasappliedtosimulatethewholeprocess#offractionation
4、,absorptionandstabilizationsystemofJinlingPetrochemicalCompany1FCC.ThesimulatedASTMD86curveoftheproductsagreedverywellwiththeactualcurves.Theresultsshowedthatthegasolineendpointandthe95%distillatetemperatureofdieseloilincreasedwiththeriseoftopcycleandthefirstmiddleretur
5、ntemperature.Inaddition,underthepremiseofensuringtheheatloadofstablecolumnbottomreboilerandthequalityofthedistillationcolumnproducts,theminimumcirculatingflowrateofthefirstmiddleandthemaximumratiooftheslurrytothetotalamountofheatwereobtainedbysimulation.Withtheincreaseo
6、fabsorbentflow,thevolumefraction+,theheatdutyofthedesorptiontowerandthereboilerofstableofC3indrygasreducedgraduallytowerincreasedgradually.Withtheheatdutyincreaseofdesorptiontowerreboiler,thevolumepercentageofC2inLPGdecreasedgradually,andtheheatdutyofthestabletowerreboi
7、lerincreased.Inordertoensurethequalityoftheproducts,itneedstoadjusttheheatremoveofdifferentfractionatingtowersections.Inaddition,itisimportanttoadjustthereboilerheatload,liquidgasratioandotheroperatingparametersoftheabsorptionstabilizationsystem.Thesimulationandoptimiza
8、tionprovidepositiveguidingsignificancetotheproduction.Keywords:Aspen-Plus,wholeprocesssimulation,ASTMD86curve,
