150MW燃气蒸汽联合循环机组热力学分析
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摘要
为满足日趋严格的环保要求并实现能源结构优化,燃气-蒸汽联合循环机组的发展越来越受到重视。以某钢厂150MW级燃气-蒸汽联合机组为例,依据热力学第一、二定律,建立机组热力学模型,对该热力系统各部位的损失大小及分布情况进行热力学分析。分析表明:该钢厂联合循环发电机组负荷率为96%工况时,运行发电效率高达44.2%,此时效率为53.5%,在不同运行工况下燃烧室和余热锅炉均为损失最主要部位。文中研究结果可为电厂的运行优化和设计提供理论依据。
In order to meet the strictly environmental protection requirements and optimize the energy structure,the development of combined cycle power plant has been drawed more and more attention.Taking a 150 MW Gas-Steam Combined Cycle power plant as the research object. Based on the first and second thermodynamics laws,the thermodynamic models were developed,and evaluate the exergy destruction of each part were analyzed. The results showthat,the electrical efficiency of the CCPP unit can up to point reach 44. 2% and exegetic efficiency is 53. 5% under the design operation conditions of96%. the combustion chamber and heat recovery steam generator are the main positions of the system under the off-design operation conditions. The researches could provide theoretical supports for operation optimization and design for power plant.
In order to meet the strictly environmental protection requirements and optimize the energy structure,the development of combined cycle power plant has been drawed more and more attention.Taking a 150 MW Gas-Steam Combined Cycle power plant as the research object. Based on the first and second thermodynamics laws,the thermodynamic models were developed,and evaluate the exergy destruction of each part were analyzed. The results showthat,the electrical efficiency of the CCPP unit can up to point reach 44. 2% and exegetic efficiency is 53. 5% under the design operation conditions of96%. the combustion chamber and heat recovery steam generator are the main positions of the system under the off-design operation conditions. The researches could provide theoretical supports for operation optimization and design for power plant.
引文
[1]A.A.A.Abuelnuor,Khalid M.Saqr,Siddig Abuelgasim Abbas Mohieldein,et al.Exergy analysis of Garri“2”180 MW combined cycle power plant[J].Renewable&Sustainable Energy Reviews,2017,79:960-969.
[2]孙科,徐迎超,蒋孝科,等.燃气-蒸汽联合循环的低热值燃料热经济性分析[J].锅炉技术,2007,38(1):5-7.
[3]庄晓杰,张士杰,肖云汉.整体煤气化湿化燃气轮机循环热力性能分析[J].燃气轮机技术,2010,23(4):1-7.
[4]Ameri M,Ahmadi P,Khanmohammadi S.Exergy analysis of a 420 MW combined cycle power plant[J].International Journal of Energy Research,2010,32(2):175-183.
[5]Ahmadi P,Dincer I.Thermodynamic analysis and thermoeconomic optimization of a dual pressure combined cycle power plant with a supplementary firing unit[J].Energy Conversion&Management,2011,52(5):2296-2308.
[6]Regulagadda P,Dincer I,Naterer G F.Exergy analysis of a thermal power plant with measured boiler and turbine losses[J].Applied Thermal Engineering,2010,30(8):970-976.
[7]郑斌.天然气压力能透平回收(火用)分析与联合循环研究[J].节能,2010,29(6):18-21.
[8]李连友,王璟,叶依林,等.有机朗肯循环低温热发电系统热力性能分析[J].节能,2011,30(Z2):57-60.
[9]Kim.T.S.Comparative Analysis on the Part load Performance of Combined Cycle Plants Considering Design Performance and Power Control Strategy[J].Energy,2004,29:71-85.
[10]任强,王贺敏.150MW燃气轮机循环发电技术改进与优化[J].冶金动力,2016,(7):42-45.
[2]孙科,徐迎超,蒋孝科,等.燃气-蒸汽联合循环的低热值燃料热经济性分析[J].锅炉技术,2007,38(1):5-7.
[3]庄晓杰,张士杰,肖云汉.整体煤气化湿化燃气轮机循环热力性能分析[J].燃气轮机技术,2010,23(4):1-7.
[4]Ameri M,Ahmadi P,Khanmohammadi S.Exergy analysis of a 420 MW combined cycle power plant[J].International Journal of Energy Research,2010,32(2):175-183.
[5]Ahmadi P,Dincer I.Thermodynamic analysis and thermoeconomic optimization of a dual pressure combined cycle power plant with a supplementary firing unit[J].Energy Conversion&Management,2011,52(5):2296-2308.
[6]Regulagadda P,Dincer I,Naterer G F.Exergy analysis of a thermal power plant with measured boiler and turbine losses[J].Applied Thermal Engineering,2010,30(8):970-976.
[7]郑斌.天然气压力能透平回收(火用)分析与联合循环研究[J].节能,2010,29(6):18-21.
[8]李连友,王璟,叶依林,等.有机朗肯循环低温热发电系统热力性能分析[J].节能,2011,30(Z2):57-60.
[9]Kim.T.S.Comparative Analysis on the Part load Performance of Combined Cycle Plants Considering Design Performance and Power Control Strategy[J].Energy,2004,29:71-85.
[10]任强,王贺敏.150MW燃气轮机循环发电技术改进与优化[J].冶金动力,2016,(7):42-45.