天然气混输管网热值波动过程模拟
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摘要
随着我国对环境的日益重视和能源结构的调整,天然气的应用越来越多,天然气气源也不断增多,燃气管网日益复杂。很多工商业用户对于燃气气质的要求较高,特别是对于燃气机组而言,燃气机组对热值波动以及热值变化率等气质较为敏感,燃气热值和热值变化率只能在一定范围内波动。日趋复杂的气质能否满足燃气电厂等工商业用户严苛的气质要求的问题亟需进一步研究。在气质瞬变模型的基础上建立了质换型天然气混输管网的仿真模型,模拟了某管网在气质质换过程中下游各节点的热值变化情况,对结果进行了分析。
In China,natural gas utilization has been become more and more important due to the growing challenge in energy and environment,and the multiple natural gas supplies with wide variation in heating value have been employed in the gas distribution network.Many industrial and commercial users have a high request for a stable gas quality,especially for those gas turbine power plants.The gas-fired units such as gas turbines are sensitive to the fluctuations of the gas heating value,and the variation range and speed are usually strictly restricted by the manufacturers.Thus the method for prediction of the variation speed of the gas composition in the gas network with multiple gas supplies needs to be studied.In this paper,a dynamic simulation model involving heating value fluctuation for the complex natural gas network with interchange of gas supplies which have different combustion properties has been established based on transient mass transfer model for a supplies-replace-type of gas pipeline,and the application of the developed simulation model for predicting heating value fluctuation at the down flow nodes of a real gas distribution network were displayed with a case study.
In China,natural gas utilization has been become more and more important due to the growing challenge in energy and environment,and the multiple natural gas supplies with wide variation in heating value have been employed in the gas distribution network.Many industrial and commercial users have a high request for a stable gas quality,especially for those gas turbine power plants.The gas-fired units such as gas turbines are sensitive to the fluctuations of the gas heating value,and the variation range and speed are usually strictly restricted by the manufacturers.Thus the method for prediction of the variation speed of the gas composition in the gas network with multiple gas supplies needs to be studied.In this paper,a dynamic simulation model involving heating value fluctuation for the complex natural gas network with interchange of gas supplies which have different combustion properties has been established based on transient mass transfer model for a supplies-replace-type of gas pipeline,and the application of the developed simulation model for predicting heating value fluctuation at the down flow nodes of a real gas distribution network were displayed with a case study.
引文
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[2]Xiang Xiaomin(香小敏),Chen Maohao(陈茂濠),Huang He(黄何),Guo Xianming(郭贤明).Guangdong province natural gas power generation prospects analysis[J].Energy Technology(能源技术),2007,28(4):214-217.
[3]Chen Liang(陈亮),Li Jialong(李嘉龙),Wu Xiaomei(武小梅),Peng Xiangang(彭显刚).Problems and solutions of natural gas power generation in Guangdong power grid[J].Electric Power(中国电力),2011,(9):76-79.
[4]Guo Kaihua(郭开华),Wang Guanpei(王冠培),Huangpu Lixiang(皇甫立霞),Li Ning(李宁).Standards of natural gas specifications and interchangeability in China[J].Natural Gas Industry(天然气工业),2011,31(3):97-101.
[5]Wang Guanpei(王冠培),Su Qingbo(苏清博),Guo Kaihua(郭开华),Li Ning(李宁).Gas supply program for pipeline network with multiple gas sources[J].Oil&Gas Storage and Transportation(油气储运),2013,32(10):63-67.
[6]Wang Guanpei(王冠培).Quality and mixing-flow properties for multi-source pipelines[D].Guangzhou:SYSU,2014.
[7]Eckert E R G,Drake R M Jr.Analysis of Heat and Mass Transfer[M].New York:McGraw-Hill Book Company,1972.
[8]Freitas Rachid F B,Carneiro de Araujo J H,Baptista R M.Predicting mixing volumes in serial transport in pipelines[J].Journal of Fluids Engineering,2002,124:528-534.
[9]Geoffrey Taylor.Dispersion of soluble matter in solvent flowing slowly through a tube[J].Proceding of the Royal Society of London(Series A:Mathematical and Physical Sciences),1953,219(1137):186-203.
[10]Geoffrey Taylor.Dispersion of matter in turbulent flow through a pipe[J].Proceeding of the Royal Society of London(Series A:Mathematical and Physical Sciences),1954,223:446-468.
[11]James B Rawlings,John G Ekerdt.Chemical Reactor Analysis and Design Fundamentals[M].Madison:Nob Hill Publishing,2006.
[12]Sittel C N,Threadgill W D,Schnelle K B.Longitudinal dispersion for turbulent flow in pipes[J].Industrial and Engineering Chemistry Fundamentals,1968,7:39-43.
[2]Xiang Xiaomin(香小敏),Chen Maohao(陈茂濠),Huang He(黄何),Guo Xianming(郭贤明).Guangdong province natural gas power generation prospects analysis[J].Energy Technology(能源技术),2007,28(4):214-217.
[3]Chen Liang(陈亮),Li Jialong(李嘉龙),Wu Xiaomei(武小梅),Peng Xiangang(彭显刚).Problems and solutions of natural gas power generation in Guangdong power grid[J].Electric Power(中国电力),2011,(9):76-79.
[4]Guo Kaihua(郭开华),Wang Guanpei(王冠培),Huangpu Lixiang(皇甫立霞),Li Ning(李宁).Standards of natural gas specifications and interchangeability in China[J].Natural Gas Industry(天然气工业),2011,31(3):97-101.
[5]Wang Guanpei(王冠培),Su Qingbo(苏清博),Guo Kaihua(郭开华),Li Ning(李宁).Gas supply program for pipeline network with multiple gas sources[J].Oil&Gas Storage and Transportation(油气储运),2013,32(10):63-67.
[6]Wang Guanpei(王冠培).Quality and mixing-flow properties for multi-source pipelines[D].Guangzhou:SYSU,2014.
[7]Eckert E R G,Drake R M Jr.Analysis of Heat and Mass Transfer[M].New York:McGraw-Hill Book Company,1972.
[8]Freitas Rachid F B,Carneiro de Araujo J H,Baptista R M.Predicting mixing volumes in serial transport in pipelines[J].Journal of Fluids Engineering,2002,124:528-534.
[9]Geoffrey Taylor.Dispersion of soluble matter in solvent flowing slowly through a tube[J].Proceding of the Royal Society of London(Series A:Mathematical and Physical Sciences),1953,219(1137):186-203.
[10]Geoffrey Taylor.Dispersion of matter in turbulent flow through a pipe[J].Proceeding of the Royal Society of London(Series A:Mathematical and Physical Sciences),1954,223:446-468.
[11]James B Rawlings,John G Ekerdt.Chemical Reactor Analysis and Design Fundamentals[M].Madison:Nob Hill Publishing,2006.
[12]Sittel C N,Threadgill W D,Schnelle K B.Longitudinal dispersion for turbulent flow in pipes[J].Industrial and Engineering Chemistry Fundamentals,1968,7:39-43.