原油梯级蒸馏节能技术及换热网络的优化

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2、r鑫●◆conventionalthreetowersprocess．Carryoutasimpletechnicalandeconomicevalua“onoftheconventionalthreetowersprocess，cascadefourtowersandfivetowersprocesses．Comparingwiththeconventionalthreetowersprocess，theannualnetprofitofcascadefourtowersprocessislower,andcas

3、cadefivertowersprocessishigherthanconventionalthreetowersprocess’s；theinvestmentpaybackperiodofcascadefourtowersprocessislonger,butfivertowersprocess’Sisquiteequivalentwithconventionalthreetowersprocess’S．Thuswecanfindthatthecascadefivetowersprocessisthebest．Th

4、erefore，designanewatmosphericandvacuumdistillationunitusingcascadedistillationenergyconservationtechnology,thesizeofthemainequipmentswillbereduced．butthecostisnotsignificantlyreduced．Whiletransformanoldatmosphericandvacuumdistillationunitusingcascadedistillatio

5、nenergyconservationtechnology,themainequipmentsmainlycallbekeptinvariantorshiftforreuse．UsingthistechnologyCansignificantlyimprovecapacityofthecrudeoilplanLreducetheinvestment,andshortenconstructionperiods．Theenergyconservationeffectisconsiderableandtheeconomic

6、benefitisalsosignificantlyincreased．KEYWORDS：Cascadedistillation，Processsimulation，Heatexchangenetworks，Energyconsumption，Technicalandeconomicanalysis’，哇，-，●{：●J目录第—幸文制}综述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1课题的背景和意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．2原油的常减压

7、蒸馏工艺⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21．2．1常减压蒸馏工艺⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21．2．2常减压蒸馏过程节能降耗⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．41．2．3常减压蒸馏技术的进展⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．81．3换热网络的综合⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯91．3．1换热网络综合的研究目标⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯101．3．2换热网络综合的方法⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

8、111．3．3夹点技术⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯131．4流程模拟技术⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．161．5本文的研究内容⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．17第二章常减压装置现场工况的模拟与分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯182．1常减压蒸馏过程模拟模型的建立⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．182．1．1现场工况背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。l82．1．2模拟模型的建立⋯⋯⋯⋯⋯⋯⋯⋯

9、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯2l2．2常减压装置现场工况的流程模拟⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．232．2．1主要工艺参数⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．232．2．2模拟计算结果⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯252．3模拟结果分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯