管网系统通用动态模拟算法及应用
摘要
在化工过程模拟系统的研发和应用中,由于管网在工艺中起着连接各个过程单元的重要作用,使管网系统模拟成为整个模拟系统的关键之一。管网拓扑结构的复杂多样,管路压力与流量的非线性,以及管路之间较强的相互作用,给管网系统自动建模与快速求解带来很大难度,为研发通用模拟程序带来了困难。
通过对管网系统稳态模拟的研究,将模拟过程分为管网的分解、简化、计算、还原四个步骤。研究了运用邻接矩阵法进行管网的分解,关联矩阵法进行管网的简化与还原。在管网的计算中,建立了稳态机理模型并运用联立方程法和序贯模块法进行了求解。
通过对管网系统动态模拟的研究,结合管网的动态机理与控制,建立了可控的动态机理模型。运用动态序贯模块法进行管网系统动态模拟,并在模拟过程中,模拟人员可对管网进行控制操作。模拟算法不仅适用于液体管网和气体管网,还可应用于气液管网的模拟。
根据以上研究成果编写通用模拟程序,实现了管网系统的自动建模与快速求解。模拟人员只需输入管网邻接矩阵、节点关联矩阵等信息,计算机会先自动建立稳态模型并进行快速求解,为动态模拟做好准备;再自动建立动态模型并进行实时动态模拟。将该程序应用于辽阳石化液相苯加氢工艺的动态模拟过程,通过实践检验了该算法的可靠性和实用性。
As the pipenet plays an important part of connecting the units in the chemical process, the pipenet simulation is a key technology in the research and application of the chemical process simulation system. However, the complication of the topology, the nonlinear relationship between pressure and flow, and the strong pipelines interactions make the pipenet automatic modeling, efficient simulation and general simulation software R&D very difficult.
The pipenet steady-state simulation was divided into four steps: analysis, simplification, solution and regression. Adjacency matrix method for analysis and incidence matrix method for simplification and regression were studied. For solution, the steady-state mechanism model was established, and the simultaneous equations method and the sequential modular method were used.
Combined with pipenet dynamic mechanism and control, the controllable dynamic mechanism model was established. The dynamic simulation was done with sequential dynamic modular method. And the operator can control the pipenet in the simulation process. The algorithm is applicable for liquid, gas and two-phase pipenet.
The developed general software realized automatic modeling and efficient simulation of pipenet. As operator inputs the pipenet adjacency matrix, node incidence matrix and related information, the software establishes steady-state model and simulates fast at first to prepare for dynamic simulation, and then establishes dynamic model and simulates real-time dynamically. The software was used in the dynamic simulation of liquid phase benzene hydrogenation process in Liaoyang petrochemical company, which verified the reliability and practicality of the algorithm.
通过对管网系统稳态模拟的研究,将模拟过程分为管网的分解、简化、计算、还原四个步骤。研究了运用邻接矩阵法进行管网的分解,关联矩阵法进行管网的简化与还原。在管网的计算中,建立了稳态机理模型并运用联立方程法和序贯模块法进行了求解。
通过对管网系统动态模拟的研究,结合管网的动态机理与控制,建立了可控的动态机理模型。运用动态序贯模块法进行管网系统动态模拟,并在模拟过程中,模拟人员可对管网进行控制操作。模拟算法不仅适用于液体管网和气体管网,还可应用于气液管网的模拟。
根据以上研究成果编写通用模拟程序,实现了管网系统的自动建模与快速求解。模拟人员只需输入管网邻接矩阵、节点关联矩阵等信息,计算机会先自动建立稳态模型并进行快速求解,为动态模拟做好准备;再自动建立动态模型并进行实时动态模拟。将该程序应用于辽阳石化液相苯加氢工艺的动态模拟过程,通过实践检验了该算法的可靠性和实用性。
As the pipenet plays an important part of connecting the units in the chemical process, the pipenet simulation is a key technology in the research and application of the chemical process simulation system. However, the complication of the topology, the nonlinear relationship between pressure and flow, and the strong pipelines interactions make the pipenet automatic modeling, efficient simulation and general simulation software R&D very difficult.
The pipenet steady-state simulation was divided into four steps: analysis, simplification, solution and regression. Adjacency matrix method for analysis and incidence matrix method for simplification and regression were studied. For solution, the steady-state mechanism model was established, and the simultaneous equations method and the sequential modular method were used.
Combined with pipenet dynamic mechanism and control, the controllable dynamic mechanism model was established. The dynamic simulation was done with sequential dynamic modular method. And the operator can control the pipenet in the simulation process. The algorithm is applicable for liquid, gas and two-phase pipenet.
The developed general software realized automatic modeling and efficient simulation of pipenet. As operator inputs the pipenet adjacency matrix, node incidence matrix and related information, the software establishes steady-state model and simulates fast at first to prepare for dynamic simulation, and then establishes dynamic model and simulates real-time dynamically. The software was used in the dynamic simulation of liquid phase benzene hydrogenation process in Liaoyang petrochemical company, which verified the reliability and practicality of the algorithm.
引文
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[18]Li Zhaoquan,Wang Jianhong,Ding Zhongwei.Dynamic Simulation of ∈-Caprolactam Polymerization Proceedings of CUCHE-3[J],Beijing,Tsinghua University Press,2000
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[23]黄仲涛,李雪辉,王乐夫.21世纪化工发展趋势[J].化工进展,2001,(4):1-4
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[28]吴靖,孙国基,曾建潮.化工流程流体网络的建模与仿真[J].系统仿真学报,1997,9(3):39-43
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[30]Bending M J,Hutchison H P.The Calculation of Steadystate Incompressible Flow in Large Networks of Pipes[J].Chem Eng Sci,1973,28:1857-1864.
[31]王胜梅,王啸乾.流体网络系统仿真算法的比较与分析[J].贵州电力技术,1998,22(1):25-27
[32]倪维斗,苟建兵,孙忻.热动力系统流体网络及算法处理.系统仿真学报[J].1997,9(3):78-83
[33]吕子安.流体网络系统仿真软件THLF的算法分析[J].系统仿真学报,1994,6(2):43-46
[34]THLF-Piping Network Modeling Pakage.AFORA,March 1988
[35]M Eric Johnson,Jacob P Poorte.A Hierarchical Approach to Computer Animation in Simulation Modeling Simulation[J].SIMULATION,1988,50(1):30-36
f36]G-FLOW.Graphic Flow and Pressure Network System[J].SIMULATORS Ⅷ,1991
[37]马迎辉,李天铎.可压缩流体网络的建模方法[J].系统仿真学报,1992,4(1):15-23
[38]吕子安.THNP:流体网络系统仿真软件包[J].系统仿真学报,1993,5(4):7-10
[39]蔡瑞忠,高瑞琪,谢茂清.流体网络模块化图形建模软件FLOWNET在600MW仿真机中的应用[J].系统仿真学报,1997,9(2):106-110
[40]谢茂清,朱文,任挺进.流体拓扑分析的研究[J].系统仿真学报,1998,10(5):43-47
[41]秦导,王健红.管道网络拓扑模型与分析计算[J].北京化工大学学报,2002,29(2):24-28
[42]秦导.管道网络拓扑模型分析计算与应用[D].北京:北京化工大学,2000
[43]赵汉江.动态流程模拟中管网流量计算的一般问题及解法探讨[D].北京:北京化工大学,2002
[44]Zollenkopf K.Bi-Factorisation-Basic Computational Algorithm and Programming Techniques[A].In:Reid J K.eds.Proceedings of the Oxford Conference of the Institute of Mathematics and Its Application[C].London:Academic Pr,1971
[45]冯述华.双层法在管网流量压力计算中的应用[D].北京:北京化工大学,2004
[46]谭天恩,麦本熙,丁惠华.化工原理(上册)[M].(2).北京:化学工业出版社,1998.18,38
[47]天津大学物理化学教研室.物理化学(上册)[M].(4).北京:高等教育出版社,2001.8
[48]郭锴,唐小恒,周绪美.化学反应工程[M].北京:化学工业出版社,2000.53
[49]陈道轮,冷伟.可压缩流体网络图形建模软件的开发[J].机电信息,1998.(17):6-10
[50]张瑞生,王弘轼,朱宏宇.过程系统工程概论[M].北京:科学出版社,2001:33-35
[51]同济大学数学教研室.高等数学(上册)[M].(4).北京:高等教育出版社,1996.8
[52]邓建中,葛仁杰,程正兴.计算方法[M].西安:西安交通大学出版社,1985.28,217
[53]刘慧.线形代数[M].北京:化学工业出版社,2000.25
[54]冯果忱.非线性方程组迭代解法[M].上海:上海科学技术出版社,1989.154
[55]黄象鼎,曾钟钢,马亚南.非线性数值分析[M].武汉:武汉大学出版社,2000.72
[56]蒋慰孙,俞金寿.化工过程动态数学模型[M].北京:化学工业出版社,1986.42
[2]麻德贤,李成岳,张卫东.化工过程分析与合成[M].北京:化学工业出版社,2002.5-7,56-58
[3]伍沅.化工过程动态[M].北京:化学工业出版社,1998.1
[4]John E Pace.Use of Speed Up Modeling in the Commercialization of a NewPolymeri zation Reator Design[J].GE Plastics
[5]朱开宏.化工流程模拟[M].北京:中国石化出版社,1993
[6]彭秉璞.化工系统分析与模拟[M].北京:化学工业出版社,1990.118-121
[7]冯伯华.化学工程手册[M].北京:化学工业出版社,1991
[8]SPEED UP.ASPEN Tech Inc,1991
[9]C Ganna Varapu.Simulation,Optimization and Control System Design for An Industrial Process[J].Chem Eng Symposium Series,No.114
[10]房德中,朱建业.化工过程分析与模拟[M].北京:化学工业出版社,1991
[11]Roger,G E Franks.Modeling and Simulation in Chemical Engineering[M].1971
[12]F Laganier.Dynamic process simulation trends and perspectives in an Industrial context[J].Computer chem Engng,1996.(20):1595-1600
[13]Wang Jianhong,Yaofei,Yang Zurong.Generalized Rigorous Real-time Simulation for Dynamic Distillation Process[A].'94 Materials & Technology[C],BUCT-CNU,Beijing
[14]Wang Jingde,Wang Jianhong,Yao Fei,etc.Real-Time Dynamic Simulation of Free-Radical Polymerization[R].CIESC AIChE'97,1997,Beijing,1205-1208
[15]陆恩锡,张慧娟.化工过程模拟及相关高新技术(Ⅱ)化工过程动态模拟[J].化工进展,2000:76-78
[16]陆震维.化工过程开发[M].北京:化学工业出版社,1984.12-23
[17]G格隆.过程系统工程[M].北京:化学工业出版社,1983
[18]Li Zhaoquan,Wang Jianhong,Ding Zhongwei.Dynamic Simulation of ∈-Caprolactam Polymerization Proceedings of CUCHE-3[J],Beijing,Tsinghua University Press,2000
[19]Xu Ying,Yao Fei,Wang Jianhong.A flash model and it's numerical scheme in dynamic process simulation[A].The third international joint symposium between Beijing University of Chemical Technology and Chungnam National University,Beijing China[C],October 7-8,1996
[20]Ma Runyu,Yao Fei,Wang Jianhong,etc.System Synthesis and Chemical Process Conservation[R],ICIK'95
[21]陆恩锡,张慧娟,尹清华.化工过程模拟及相关高新技术(Ⅰ)化工过程稳态模拟[J].化工进展,1999,(4):63
[22]陈晓春,马桂荣.动态模拟技术与化学工程[J].现代化工,2002,(3):17
[23]黄仲涛,李雪辉,王乐夫.21世纪化工发展趋势[J].化工进展,2001,(4):1-4
[24]金涌,汪展文,王金福.化学工程迈入21世纪[J].化工进展,2000,(1):5-10
[25]杨有麒.化工过程模拟[J].化工进展,1996,6(3):4-5
[26]Simcon Dynamic Simulation System.ABB Simcon Inc,1995
[27]王健红,陈晓春,魏杰,等.化工装置动态模拟与优化工艺软件平台[J].化工进展,1997,(4):49-51
[28]吴靖,孙国基,曾建潮.化工流程流体网络的建模与仿真[J].系统仿真学报,1997,9(3):39-43
[29]曾建潮,尚志刚,沈承林.化工过程系统的网络模型与递阶仿真[J].系统仿真学报,1995,7(2):56-61
[30]Bending M J,Hutchison H P.The Calculation of Steadystate Incompressible Flow in Large Networks of Pipes[J].Chem Eng Sci,1973,28:1857-1864.
[31]王胜梅,王啸乾.流体网络系统仿真算法的比较与分析[J].贵州电力技术,1998,22(1):25-27
[32]倪维斗,苟建兵,孙忻.热动力系统流体网络及算法处理.系统仿真学报[J].1997,9(3):78-83
[33]吕子安.流体网络系统仿真软件THLF的算法分析[J].系统仿真学报,1994,6(2):43-46
[34]THLF-Piping Network Modeling Pakage.AFORA,March 1988
[35]M Eric Johnson,Jacob P Poorte.A Hierarchical Approach to Computer Animation in Simulation Modeling Simulation[J].SIMULATION,1988,50(1):30-36
f36]G-FLOW.Graphic Flow and Pressure Network System[J].SIMULATORS Ⅷ,1991
[37]马迎辉,李天铎.可压缩流体网络的建模方法[J].系统仿真学报,1992,4(1):15-23
[38]吕子安.THNP:流体网络系统仿真软件包[J].系统仿真学报,1993,5(4):7-10
[39]蔡瑞忠,高瑞琪,谢茂清.流体网络模块化图形建模软件FLOWNET在600MW仿真机中的应用[J].系统仿真学报,1997,9(2):106-110
[40]谢茂清,朱文,任挺进.流体拓扑分析的研究[J].系统仿真学报,1998,10(5):43-47
[41]秦导,王健红.管道网络拓扑模型与分析计算[J].北京化工大学学报,2002,29(2):24-28
[42]秦导.管道网络拓扑模型分析计算与应用[D].北京:北京化工大学,2000
[43]赵汉江.动态流程模拟中管网流量计算的一般问题及解法探讨[D].北京:北京化工大学,2002
[44]Zollenkopf K.Bi-Factorisation-Basic Computational Algorithm and Programming Techniques[A].In:Reid J K.eds.Proceedings of the Oxford Conference of the Institute of Mathematics and Its Application[C].London:Academic Pr,1971
[45]冯述华.双层法在管网流量压力计算中的应用[D].北京:北京化工大学,2004
[46]谭天恩,麦本熙,丁惠华.化工原理(上册)[M].(2).北京:化学工业出版社,1998.18,38
[47]天津大学物理化学教研室.物理化学(上册)[M].(4).北京:高等教育出版社,2001.8
[48]郭锴,唐小恒,周绪美.化学反应工程[M].北京:化学工业出版社,2000.53
[49]陈道轮,冷伟.可压缩流体网络图形建模软件的开发[J].机电信息,1998.(17):6-10
[50]张瑞生,王弘轼,朱宏宇.过程系统工程概论[M].北京:科学出版社,2001:33-35
[51]同济大学数学教研室.高等数学(上册)[M].(4).北京:高等教育出版社,1996.8
[52]邓建中,葛仁杰,程正兴.计算方法[M].西安:西安交通大学出版社,1985.28,217
[53]刘慧.线形代数[M].北京:化学工业出版社,2000.25
[54]冯果忱.非线性方程组迭代解法[M].上海:上海科学技术出版社,1989.154
[55]黄象鼎,曾钟钢,马亚南.非线性数值分析[M].武汉:武汉大学出版社,2000.72
[56]蒋慰孙,俞金寿.化工过程动态数学模型[M].北京:化学工业出版社,1986.42
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