应用隔壁式精馏塔分离煤制烯烃设计
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摘要
利用Aspen HYSYS流程模拟软件完成隔壁式精馏塔的设计,设计过程中引用逻辑操作单元将隔壁式精馏塔的预分离塔与主精馏塔进行了耦合,逻辑操作单元的引入可以减少隔壁式精馏塔的自由度,从而降低了精馏塔模拟达到稳态时的难度。在完成精馏塔设计并得到结果的基础上,对稳态工艺过程模拟结果进行灵敏度分析,考察了隔壁式精馏塔侧线抽出流量、回流比、进料温度、气相回流流量和液相回流流量对隔壁式精馏塔塔顶、中间以及塔底组成的影响,得到优化后的工艺操作参数。同时根据隔壁式精馏塔分离产物的组成提出并联分离顺序,与原有的顺序分离相比流程更加紧凑,对实际的烯烃分离流程的设计工作具有参考意义。
A design about application of dividing-wall to separate light olefins based coal was accomplished in software Aspen HYSYS.The logic recycle operation units coupled the pre-fractionator with main fractionator,which could reduce the number of column freedom.The sensitivity analyses were made on the base of stable process design,which included the relationship between middle stream mole flow rate drown out of main column,reflex ratio,feed stream temperature,vapor mole flow rate recycle back to pre-fractionator,liquid recycle back to pre-fractionator and main column top,middle and bottom composition,then optimized operation parameters were obtained.And a novel separation process was addressed according to the mole fraction of three production stream,which was more compact than traditional separation process.
A design about application of dividing-wall to separate light olefins based coal was accomplished in software Aspen HYSYS.The logic recycle operation units coupled the pre-fractionator with main fractionator,which could reduce the number of column freedom.The sensitivity analyses were made on the base of stable process design,which included the relationship between middle stream mole flow rate drown out of main column,reflex ratio,feed stream temperature,vapor mole flow rate recycle back to pre-fractionator,liquid recycle back to pre-fractionator and main column top,middle and bottom composition,then optimized operation parameters were obtained.And a novel separation process was addressed according to the mole fraction of three production stream,which was more compact than traditional separation process.
引文
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[9]唐明辉,赵丹.神华包头煤化工烯烃分离工艺技术特点[J].石油和化工设备,2011,14(4):48-50.Tang Minghui,Zhao Dan.Shenhua Baotou coal chemical olefin separation technology characteristics[J].Petro-Chemical Equipment,2011,14(4):48-50.
[10]郑庆阳.高低压脱丙烷塔的运行方式转换及优化[J].乙烯工业,2014,26(2):47-50.Zheng Qingyang.Transfer and optimization of operation mode of high and low pressure depropanizer[J].Ethylene Industry,2014,26(2):47-50.
[11]Rong Benguang.Synthesis of dividing-wall columns(DWC)for multicomponent distillations-A systematic approach[J].Chemical Engineering Research and Design,2011,89(8):1281-1294.
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[13]何振斌,方利国,杜嘉伟,等.隔板塔特性模拟研究[J].广东化工,2013,254(12):1-2.He Zhenbin,Fang Liguo,Du Jiawei,et al.Simulation of dividing wall column[J].Guangdong Chemical Industry,2013,254(12):1-2.
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[15]李建清,王二强,黄金成,等.隔板精馏塔应用于氯乙烯精馏过程的模拟分析[J].现代化工,2012,32(8):104-107.Li Jianqing,Wang Erqiang,Huang Jincheng,et al.Simulation and analysis of application of DWC column in VC distillation process[J].Modern Chemical Industry,2012,32(8):104-107.
[16]方静,王宝东,李春利,等.隔板塔共沸精馏分离二氯甲烷-乙腈-水-硅醚体系[J].化工学报,2013,64(3):963-969.Fang Jing,Wang Baodong,Li Chunli,et al.Separation of dichloromethane-acetonitrile-water-hexamethyl disiloxane with dividing wall column by azeotropic distillation[J].CIESC Journal,2013,64(3):963-969.
[17]朱登磊,谭超,任根宽.基于隔壁精馏塔的甲醇制烯烃分离新工艺及Aspen实现[J].应用化工,2013,42(12):2304-2307.Zhu Denglei,Tan Chao,Ren Genkuan.Design and Aspen implementation of a new separation process for methanol to olefins based on dividing wall column[J].Applied Chemical Industry,2013,42(12):2304-2307.
[18]朱登磊,尚书勇,谭超,等.基于分壁精馏塔的乙烯装置顺序分离新工艺及其模拟研究[J].石油学报(石油加工),2014,30(4):682-686.Zhu Denglei,Shang Shuyong,Tan Chao,et al.A new sequential separation process and its simulation for ethylene plant based on a dividing wall column[J].Acta Petrolei Sinica(Petroleum Processing Section),2014,30(4):682-686.
[19]Youngrmn C,Bokyung K,Dongpil K,et al.Recovery of lactic acid by reactive dividing wall column[C].2008International Conference on Control,Automation and Systems,2008:2596-2599.
[20]Ignat R M,Kiss A A.Energy efficient recovery of methanol and glycerol in biodiesel production[J].Chemical Engineering Transactions,2012(29):1141-1146.
[21]贺雷.HYSYS过程模拟软件在空分设备操作中的应用[J].深冷技术,2005(6):45-47.He Lei.Application of process simulation software HYSYS in air separation unit[J].Cryogenic Technology,2005(6):45-47.
[22]李立新,倪进方,李延生.甲醇制烯烃分离技术进展及评述[J].化工进展,2008,27(9):1332-1335.Li Lixin,Ni Jinfang,Li Yansheng.Process of separation technologies for methanol to olefins[J].Chemical Industry and Engineering Progress,2008,27(9):1332-1335.
[23]Stryjek R,Vera J H.PRSV:An improved peng-robinson equation of state for pure compounds and mixtures[J].Canadian Journal of Chemical Engineering,1986,64(2):323-333.
[24]展宝瑞,李涛,马宏方,等.前脱丙烷预切割分离MTO粗产品工艺的模拟与优化[J].化工进展,2015,34(7):2086-2091.Zhan Baorui,Li Tao,Ma Hongfang,et al.Simulation and optimization of MTO product separation process based on front-end depropanization and pre-segmentation[J].Chemical Industry and Engineering Progress,2015,34(7):2086-2091.
[25]朱登磊,任根宽,尚书勇,等.基于Aspen Plus的Petlyuk塔模拟与优化[J].计算机与应用化学,2013,30(3):301-304.Zhu Denglei,Ren Genkuan,Shang Shuyong,et al.Simulation and optimization of Petlyuk column by Aspen Plus[J].Computers and Applied Chemistry,2013,30(3):301-304.
[2]项东,彭丽娟,杨思宇,等.石油与煤路线制烯烃过程技术评述[J].化工进展,2013,32(5):959-970.Xiang Dong,Peng Lijuan,Yang Siyu,et al.A review of oil-based and coal-based processes for olefins production[J].Chemical Industry and Engineering Progress,2013,32(5):959-970.
[3]陈予东,李永鑫,王静.煤制低碳烯烃技术及其工业化应用[J].河南化工,2011,28(7):3-6.Chen Yudong,Li Yongxin,Wang Jing.Technology and industrial application of coal light olefin[J].Henan Chemical Industry,2011,28(7):3-6.
[4]吴德荣,何琨.MTO与MTP工艺技术和工业应用的进展[J].石油化工,2015,44(1):1-10.Wu Derong,He Kun.Progresses in MTO and MTP process technology and industrial application[J].Petrochemical Technology,2015,44(1):1-10.
[5]王皓,王建国.MTO烯烃分离回收技术与烯烃转化技术[J].煤化工,2011,153(2):5-8.Wang Hao,Wang Jianguo.MTO recovery technology and OCT integration help maximize MTO plant profit[J].Coal Chemical Industry,2011,153(2):5-8.
[6]刘洪亮.煤制烯烃工艺分离装置的流程分析[J].炼油与化工,2014,25(5):23-26.Liu Hongliang.Analysis on technological process of olefin separation plant of coal-to-olefin process[J].Refining and Chemical Industry,2014,25(5):23-26.
[7]赵良,程广伟,高文刚,等.甲醇制烯烃下游烯烃分离技术的简介、对比及发展方向[J].河南科技,2013(16):25-26.Zhao Liang,Cheng Guangwei,Gao Wengang,et al.Methanol to olefins downstream olefin separation technology introduction,comparison and development direction[J].Journal of Henan Science and Technology,2013(16):25-26.
[8]张东明.甲醇制烯烃装置分离流程述评[J].化学工业,2012,30(6):12-17.Zhang Dongming.Review of separation process for methanol to olefins[J].Chemical Industry,2012,30(6):12-17.
[9]唐明辉,赵丹.神华包头煤化工烯烃分离工艺技术特点[J].石油和化工设备,2011,14(4):48-50.Tang Minghui,Zhao Dan.Shenhua Baotou coal chemical olefin separation technology characteristics[J].Petro-Chemical Equipment,2011,14(4):48-50.
[10]郑庆阳.高低压脱丙烷塔的运行方式转换及优化[J].乙烯工业,2014,26(2):47-50.Zheng Qingyang.Transfer and optimization of operation mode of high and low pressure depropanizer[J].Ethylene Industry,2014,26(2):47-50.
[11]Rong Benguang.Synthesis of dividing-wall columns(DWC)for multicomponent distillations-A systematic approach[J].Chemical Engineering Research and Design,2011,89(8):1281-1294.
[12]何西涛,干爱华,陈宁.分壁精馏塔分离苯/甲苯/二甲苯的模拟工艺研究[J].化学工业与工程,2012,29(2):51-57.He Xitao,Gan Aihua,Chen Ning.Simulation of separating benzene/toluene/xylene with dividing wall column[J].Chemical Industry and Engineering,2012,29(2):51-57.
[13]何振斌,方利国,杜嘉伟,等.隔板塔特性模拟研究[J].广东化工,2013,254(12):1-2.He Zhenbin,Fang Liguo,Du Jiawei,et al.Simulation of dividing wall column[J].Guangdong Chemical Industry,2013,254(12):1-2.
[14]马晨皓,曾爱武.隔壁精馏塔流程模拟及节能效益的研究[J].化学工程,2013,41(3):1-5.Ma Chenhao,Zeng Aiwu.Simulation of Dividing-Wall-Column process and its energy-saving benefits[J].Chemical Engineering(China),2013,41(3):1-5.
[15]李建清,王二强,黄金成,等.隔板精馏塔应用于氯乙烯精馏过程的模拟分析[J].现代化工,2012,32(8):104-107.Li Jianqing,Wang Erqiang,Huang Jincheng,et al.Simulation and analysis of application of DWC column in VC distillation process[J].Modern Chemical Industry,2012,32(8):104-107.
[16]方静,王宝东,李春利,等.隔板塔共沸精馏分离二氯甲烷-乙腈-水-硅醚体系[J].化工学报,2013,64(3):963-969.Fang Jing,Wang Baodong,Li Chunli,et al.Separation of dichloromethane-acetonitrile-water-hexamethyl disiloxane with dividing wall column by azeotropic distillation[J].CIESC Journal,2013,64(3):963-969.
[17]朱登磊,谭超,任根宽.基于隔壁精馏塔的甲醇制烯烃分离新工艺及Aspen实现[J].应用化工,2013,42(12):2304-2307.Zhu Denglei,Tan Chao,Ren Genkuan.Design and Aspen implementation of a new separation process for methanol to olefins based on dividing wall column[J].Applied Chemical Industry,2013,42(12):2304-2307.
[18]朱登磊,尚书勇,谭超,等.基于分壁精馏塔的乙烯装置顺序分离新工艺及其模拟研究[J].石油学报(石油加工),2014,30(4):682-686.Zhu Denglei,Shang Shuyong,Tan Chao,et al.A new sequential separation process and its simulation for ethylene plant based on a dividing wall column[J].Acta Petrolei Sinica(Petroleum Processing Section),2014,30(4):682-686.
[19]Youngrmn C,Bokyung K,Dongpil K,et al.Recovery of lactic acid by reactive dividing wall column[C].2008International Conference on Control,Automation and Systems,2008:2596-2599.
[20]Ignat R M,Kiss A A.Energy efficient recovery of methanol and glycerol in biodiesel production[J].Chemical Engineering Transactions,2012(29):1141-1146.
[21]贺雷.HYSYS过程模拟软件在空分设备操作中的应用[J].深冷技术,2005(6):45-47.He Lei.Application of process simulation software HYSYS in air separation unit[J].Cryogenic Technology,2005(6):45-47.
[22]李立新,倪进方,李延生.甲醇制烯烃分离技术进展及评述[J].化工进展,2008,27(9):1332-1335.Li Lixin,Ni Jinfang,Li Yansheng.Process of separation technologies for methanol to olefins[J].Chemical Industry and Engineering Progress,2008,27(9):1332-1335.
[23]Stryjek R,Vera J H.PRSV:An improved peng-robinson equation of state for pure compounds and mixtures[J].Canadian Journal of Chemical Engineering,1986,64(2):323-333.
[24]展宝瑞,李涛,马宏方,等.前脱丙烷预切割分离MTO粗产品工艺的模拟与优化[J].化工进展,2015,34(7):2086-2091.Zhan Baorui,Li Tao,Ma Hongfang,et al.Simulation and optimization of MTO product separation process based on front-end depropanization and pre-segmentation[J].Chemical Industry and Engineering Progress,2015,34(7):2086-2091.
[25]朱登磊,任根宽,尚书勇,等.基于Aspen Plus的Petlyuk塔模拟与优化[J].计算机与应用化学,2013,30(3):301-304.Zhu Denglei,Ren Genkuan,Shang Shuyong,et al.Simulation and optimization of Petlyuk column by Aspen Plus[J].Computers and Applied Chemistry,2013,30(3):301-304.