1000 MW二次再热超超临界机组工程特点及运行分析
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摘要
泰州电厂二期2×1 000 MW机组是我国"十二·五"节能减排科技支撑示范项目,也是世界首台应用超临界二次再热发电技术的机组,分别于2015年9月和2016年1月投入运行。从二次再热发电技术出发,系统分析了泰州二期工程机组中锅炉钢架结构、受热面管排布置、锅炉调温以及十级抽汽回热系统等优势技术,从机组运行可靠性、环保排放指标以及经济性3个方面分析了机组3 a来的运行情况以及与国内、外同行业相关机组指标对比。结果表明泰州电厂二期2台超超临界二次再热机组运行稳定、环保排放指标优良、经济效益指标良好。
The 2×1 000 MW unit of Taizhou Phase II Power Plant is a demonstration project of energy saving and emission reduction technology in China during the 12 th Five-Year Plan. It is also the first unit in the world applying supercritical secondary reheat power generation technology which was put into commercial operation in September 2015 and January 2016, respectively. Starting from the secondary reheat power generation technology, this paper systematically analyses the advantages of the boiler steel frame structure, heating surface tube arrangement, boiler temperature regulation and ten-stage extraction system in the unit of Taizhou Phase Ⅱ Project. It also analyses the operation of the unit in the past three years from three aspects of unit operation reliability, environmental emission index and economy, as well as the related units in domestic and foreign industries are compared. The results show that two Ultra Supercritical Secondary Reheating Units in the second phase of Taizhou Power Plant are stable in operation, excellent in environmental protection emission index and good in economic benefit index. Ultra supercritical secondary reheating power generation technology has been successfully realized in China.
The 2×1 000 MW unit of Taizhou Phase II Power Plant is a demonstration project of energy saving and emission reduction technology in China during the 12 th Five-Year Plan. It is also the first unit in the world applying supercritical secondary reheat power generation technology which was put into commercial operation in September 2015 and January 2016, respectively. Starting from the secondary reheat power generation technology, this paper systematically analyses the advantages of the boiler steel frame structure, heating surface tube arrangement, boiler temperature regulation and ten-stage extraction system in the unit of Taizhou Phase Ⅱ Project. It also analyses the operation of the unit in the past three years from three aspects of unit operation reliability, environmental emission index and economy, as well as the related units in domestic and foreign industries are compared. The results show that two Ultra Supercritical Secondary Reheating Units in the second phase of Taizhou Power Plant are stable in operation, excellent in environmental protection emission index and good in economic benefit index. Ultra supercritical secondary reheating power generation technology has been successfully realized in China.
引文
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[16]刘翔,方曹明,范浩杰,等.二次再热超超临界机组分析[J].锅炉技术,2016,47(3):1-5.LIU Xiang,FANG Caoming,FAN Haojie,et al.Exergy analysis on ultra supercritical power unit with double reheat[J].Boiler Technology,2016,47(3):1-5.
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[18]傅家骥,仝允桓.工业技术经济学[M].北京:清华大学出版社,1996.FU Jiaji,TONG Yunheng.Industrial technology economics[M].Beijing:Tsinghua University Press,1996.
[2]徐通模,袁益超,陈干锦,等.超大容量超超临界锅炉的发展趋势[J].动力工程,2003,23(3):2363-2369.XUTongmo,YUAN Yichao,CHEN Ganjin,et al.Development trend of large capacity ultra-supercritical boilers[J].Power Engineering,2003,23(3):2363-2369.
[3]高昊天,范浩杰,董建聪,等.超超临界二次再热机组的发展[J].锅炉技术,2014,45(4):1-3.GAO Haotian,FAN Haojie,DONG Jiancong,et al.Development of double reheat ultra-supercritical unit[J].Boiler Technology,2014,45(4):1-3.
[4]赵家毅,李千军,杨涛,等.二次再热机组加热锅炉二次风的抽汽过热度利用系统[J].广东电力,2018,31(1):11-16.ZHAO Jiayi,LI Qianjun,YANG Tao,et al.Steam extraction superheat degree utilization system of secondary air of heating boiler of secondary reheat unit[J].Guangdong Electric Power,2018,31(1):11-16.
[5]UST Y,GONCA G,KAYADELEN H K.Determination of optimum reheat pressures for single and double reheat irreversible rankine cycle[J].Journal of the Energy Institute,2011,84(4):215-219.
[6]BLUM R,BUGGER J,KJAER S.AD700 innovations pave the way for 53 percent efficiency[J].Modern Power Systems,2008,8(11):15-19.
[7]谷雅秀,王生鹏.一种超超临界二次再热发电系统及其热经济性分析[J].西安理工大学学报,2013,29(3):357-361.GUYaxiu,WANG Shengpeng.Thermal economic analysis of a double reheat ultra supercritical pressure unit[J].Journal of Xi’an University of Technology,2013,29(3):357-361.
[8]王月明,牟春华,姚明宇,等.二次再热技术发展与应用现状[J].热力发电,2017,46(8):1-10,15.WANG Yueming,MOU Chunhua,YAO Mingyu,et al.Development and expectation of application of ultra-supercritical double-reheat steam turbines[J].Thermal Power Generation,2017,46(8):1-10,15.
[9]尹亚宁.二次再热超超临界机组应用现状及发展[J].电站系统工程,2013,29(2):37-38.YIN Yaning.Application status and development of USC unit with double reheat cycles[J].Power System Engineering,2013,29(2):37-38.
[10]FUSHIMI T.川越火电厂的运行经验[J].国际电力,1997(4):35-40.FUSHIMI T.Operation experience of Sichuan yue thermal power plant[J].International Electric Power for China,1997(4):35-40.
[11]朱明善.能量系统的分析[M].北京:清华大学出版社,1988.ZHU Mingshan.Analysis of energy system[M].Beijing:Tsinghua university press,1998.
[12]杨冬,徐鸿,陈海平.引进型300 MW循环流化床锅炉效率分析[J].动力工程学报,2010,30(3):180-183.YANG Dong,XU Hong,CHENHaiping.Analysis of exergy efficiency of imported 300 MW circulating fluidized bed boiler[J].Journal of Chinese Society of Power Engineering,2010,30(3):180-183.
[13]张晓晖,杨茉,卢玫,等.火力电厂热力系统分析计算研究[J].动力工程,2004,24(5):703-706.ZHANG Xiaohui,YANG Mo,LU Mei,et al.Research on exergy analysis computation of coal-fired unit thermal system[J].Power Engineering,2004,24(5):703-706.
[14]陆万鹏,孙奉仲,史月涛.电站锅炉排烟预热能级提升系统分析[J].中国电机工程学报,2012,32(23):9-14.LU Wanpeng,SUN Fengzhong,SHI Yuetao.Exergy analysis of advanced boiler flue gas heat recovery system in power plant[J].Proceedings of the CSEE,2012,32(23):9-14.
[15]刘强,段远源.超临界600 MW火电机组热力系统的分析[J].中国电机工程学报,2010,30(32):8-12.LIU Qiang,DUAN Yuanyuan.Exergy analysis for thermal power system of a 600 MW supercritical power unit[J].Proceedings of the CSEE,2010,30(32):8-12.
[16]刘翔,方曹明,范浩杰,等.二次再热超超临界机组分析[J].锅炉技术,2016,47(3):1-5.LIU Xiang,FANG Caoming,FAN Haojie,et al.Exergy analysis on ultra supercritical power unit with double reheat[J].Boiler Technology,2016,47(3):1-5.
[17]中国电力企业联合会.中电联关于公布2017年度全国火电机组能效水平对标结果的通知[Z].北京:中电联理事会办公厅,2018.China Electric Power Enterprise Federation.Notice of ITU on announcing the results of national energy efficiency standards for thermal power units in 2017[Z].Beijing:General Office of ITU Council,2018.
[18]傅家骥,仝允桓.工业技术经济学[M].北京:清华大学出版社,1996.FU Jiaji,TONG Yunheng.Industrial technology economics[M].Beijing:Tsinghua University Press,1996.