低热值煤电厂配煤技术研究进展
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摘要
针对低热值煤电厂单一来源燃煤偏离设计煤种,造成运行不稳、成本高等问题,系统论述了动力配煤的主要技术,分析了配煤工艺、设备及管理现状,并对山西境内5个电厂燃煤资源及煤质情况进行实地调研,结合煤质来源不稳定,煤种多,煤质复杂的情况,提出了基于煤质在线检测的无筒仓的封闭式储混配煤控制系统。结果表明,该系统考虑燃料全局管理,最终实现基于无筒仓的实时在线配煤,在大规模储煤的情况下,实现高效、精确、自动化配煤。可减少煤炭长期储存带来的热值损失,以及资金占用带来的成本增加,预计节约成本1%,降低煤耗1%~2%;可降低SO2、NOx的瞬时大量生成,减少瞬时超标排放的频次。无筒仓的封闭式储混配煤控制系统为实施配煤自动控制提供了一种新的方法,保证燃料的稳定供给。
Single and non-ideal coal led to unstable operation and high cost of coal-fired power plants which burnt low calorific value coal.The main technologies,equipments and management situation of coal blending were discussed. The coal resources and properties of five Shanxi coal-fired power plants were investigated.Overall design principle and objective were proposed based on the on-line analyzed results.A closed coal storing and blending control system without coal silo was designed.The system could blend coal efficiently and automatically even there were large coal.The system could reduce the cost by 1%,the coal loss were decreased by 1% to 2%.Benefit from the system,there wasn't large SO_2,NOxemission in a short time.The system also improved coal blending efficiency and stabilized the fuel supplement.
Single and non-ideal coal led to unstable operation and high cost of coal-fired power plants which burnt low calorific value coal.The main technologies,equipments and management situation of coal blending were discussed. The coal resources and properties of five Shanxi coal-fired power plants were investigated.Overall design principle and objective were proposed based on the on-line analyzed results.A closed coal storing and blending control system without coal silo was designed.The system could blend coal efficiently and automatically even there were large coal.The system could reduce the cost by 1%,the coal loss were decreased by 1% to 2%.Benefit from the system,there wasn't large SO_2,NOxemission in a short time.The system also improved coal blending efficiency and stabilized the fuel supplement.
引文
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[22]张双武.基于B/S模式的Web应用在发电企业燃料管理系统的实现[J].电工技术,2012 30(6):23-25.Zhang Shuangwu.Implementation of fuel management system Web application based on B/S model in power plant[J].Electric Engineering,2012,30(6):23-25.
[23]刘照,董泽.基于UML的入厂煤智能管理系统的设计与实现[J].计算机仿真,2014,31(12):64-66.Liu Zhao,Dong Ze.Design and implementation of a feed coal intelligent management system based on UML[J].Computer Simulation,2014,31(12):64-66.
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[25]杨宁.电厂燃料管理系统解决方案综述[J].电子技术与软件工程,2014(23):208.Yang Ning.Review of fuel management system technology strategy in fire plant[J].Electronic Technology and Software Engineering,2014(23):208.
[26]李文华,姜利.动力配煤技术的现状及发展[J].中国煤炭,1997(7):13-16.
[27]李胜.包钢配煤系统技术经济研究[J].钢铁,2003,38(11):75-77.Li Sheng.Technico-economical research of Baogang coal blending system[J].Iron&Steel,2003,38(11):75-77.
[28]杨明平,彭荣华,文杰强,等.焦粉配煤炼焦的研究[J].煤炭科学技术,2003,31(11):7-10.Yang Mingping,Peng Ronghua,Wen Jieqiang,et al.Research on coking with blended coke powder[J].Coal Science and Technology,2003,31(11):7-10.
[29]朱哮水,王双童.锅炉配煤掺烧经济性分析评估系统[J].热力发电,2011,40(12):103,105.Zhu Xiaoshui,Wang Shuangtong.Economical analysis and judgement system of boiler coal blending[J].Thermal Power Generation,2011,40(12):103,105.
[30]夏季,陆攀,华志刚,等.电站锅炉全局优化智能配煤模型的建立及系统开发[J].动力工程学报,2010,30(7):512-517.Xia Ji,Lu Pan,Hua Zhigang,et al.Model set-up and system development for intelligent coal blending based on integral optimization of utility boilers[J].Chinese Journal of Power Engineering,2010,30(7):512-517.
[31]马增辉.火电厂燃煤管理系统智能控制的研究[D].北京:华北电力大学,2007.
[32]沈利.燃煤电站锅炉的燃烧优化技术及相关算法应用研究[D].杭州:浙江大学,2011.
[33]郝海波,卢永利,宋小磊,等.精细化智能配煤技术的研究与应用[J].节能,2015(7):43-46.Hao Haibo,Lu Yongli,Song Xiaolei,et al.Study and application of meticulous management on coal blending[J].Energy Conservation,2015(7):43-46.
[34]贾风军.动力配煤技术及其重要意义[J].内蒙古科技与经济,2006(18):127-128.Jia Fengjun.The technology and importance of coal blending[J].Inner Mongolia Science Technology and Economy,2006(18):127-128.
[35]龚德鸿,朱军超,邱靖,等.基于燃烧火用效率的电厂配煤模型[J].贵州大学学报(自然科学版),2009,26(3):82-85.Gong Dehong,Zhu Junchao,Qiu Jing,et al.The model of steam coal blending based on combustion exergy efficiency[J].Journal of Guizhou University(Natural Science),2009,26(3):82-85.
[36]丁海峰.基于煤质全元素在线分析技术的电厂优化配煤研究[D].南京:东南大学,2011.
[2]陈宜阳,林敏杜.通过配煤掺烧提高电厂脱硫效率的方法与实践[J].大众科技,2009(4):117-118.Chen Yiyang,Lin Mindu.Method and practice by blending coal to improve the desulfurization efficiency of the plant[J].Popular Science and Technology,2009(4):117-118.
[3]Rubiera F,Arenillas A,Arias B,et al.Modification of combustion behaviour and NO emissions by coal blending[J].Fuel Processing Technology,2002,77/78(77):111-117.
[4]Gupta A,Das A K,Chauhan G I S.A coal-blending model:a tool for better coal blend preparation[J].Coal Preparation,2007,27(1):28-38.
[5]王春波,李永华,陈鸿伟.混煤燃烧特性研究[J].中国电机工程学报,2005,25(18):97-103.Wang Chunbo,Li Yonghua,Chen Hongwei.Study on combustion characteristics of blended coals[J].Proceedings of the Chinese Society for Electrical Engineering,2005,25(18):97-103.
[6]丁海峰,宋兆龙.动力配煤技术及其自动控制系统的设计[J].洁净煤技术,2010,16(2):89-92.Ding Haifeng,Song Zhaolong,Coal blending technology and design of automatic control system[J].Clean Coal Technology,2010,16(2):89-92.
[7]郭一楠,王凌,谭德健,等.基于遗传算法和神经网络混合优化的配煤控制[J].中国矿业大学学报,2002,31(5):404-406.Guo Yi'nan,Wang Ling,Tan Dejian,et al.Coal blending control based on mixed optimization of genetic algorithm and neural network[J].Journal of China University of Mining&Technology,2002,31(5):404-406.
[8]Zhao J,Liu S X.Models for coal blending with inventory in coalfired power plant[C]//Control and Decision Conference.New York:IEEE,2013:1790-1793.
[9]谭振云.大型燃煤电厂封闭式贮煤场技术性能比较[J].电力建设,2012,33(5):67-70.Tan Zhenyun.Performance comparison of enclosed coal yards in large-scale coal-fired power plant[J].Electric Power Construction,2012,33(5):67-70.
[10]李蓉生.落煤塔式圆形封闭煤场应用于火力发电厂的探讨[J].中国电力,2013,46(12):79-82.Li Rongsheng.Discussion on tower type of enclosed circular coal yard applied in coal-fired power plants[J].Electric Power,2013,46(12):79-82.
[11]罗宇东.方形煤仓并列群仓贮煤技术在大型燃煤电厂的应用[J].华电技术,2010,32(12):64-67.Luo Yudong.Application of coal storing technology using paralleling multi-square bunkers in large coal-fired power plant[J].Huadian Technology,2010,32(12):64-67.
[12]李春晖,赵鹏年.混煤仓在电厂的应用[J].电力建设,1981(3):16-21.Li Chunhui,Zhao Pengnian.Application of mixed coal banker in coal-fired power plant[J].Electric Power Construction,1981(3):16-21.
[13]安文兰,毋绍俊.混煤仓在选煤厂中的开发和应用[J].煤矿设计,1996,46(7):37-39.
[14]邢承海,周久扬,李靖宇,等.基于筒仓的混配煤控制系统及方法:CN102756925A[P].2012-10-31.
[15]王蒙.火力发电厂贮煤方式的选择[J].中国电力,2015,48(9):38-42.Wang Meng.Type selection of coal storage for coal-fired power plants[J].Electric Power,2015,48(9):38-42.
[16]张其志,符福存.兴隆庄煤矿选煤厂动力配煤均质化技术[J].选煤技术,2008(4):72-74.
[17]成刚,祝起龙,王涛涛.火电厂燃料智能化管理系统构建及自动识别技术的应用[J].广州化工,2013,6(1):38-41.Cheng Gang,Zhu Qilong,Wang Taotao.Discussion on the construction of fuel intelligent management system and the application of automatic identification technology in thermal power plant[J].Guangzhou Chemical Industry,2013,6(1):38-41.
[18]吴川,郑秀萍,柴天佑.火电厂燃料管理系统的研究与应用[J].电力系统自动化,2002,26(2):64-66.Wu Chuan,Zheng Xiuping,Chai Tianyou.Research and application of fuel management system in thermal power plants[J].Automation of Electric Power Systems,2002,26(2):64-66.
[19]丁宏刚,陈刚.火力发电厂数字化煤场管理系统开发应用探讨[J].现代商贸工业,2009,21(6):263-264.
[20]徐创学,王智微,罗凯,等.基于SAP的火电厂数字化煤场管理系统的开发及应用[J].热力发电,2011,40(8):78-82.Xu Chuangxue,Wang Zhiwei,Luo Kai,et al.Development and application of digitalized coal yard management system for thermal power plant based on SAP[J].Thermal Power Generation,2011,40(8):78-82.
[21]李兵,付业林,谢磊.物联网技术在火电厂燃料监控管理系统应用中的研究探讨[J].衡器,2011,40(11):24-26.Li Bing,Fu Yelin,Xie Lei.Research and discussion about fuel monitoring and management system application of internet of things technology in thermal power plant[J].Weighing Apparatus,2011,40(11):24-26.
[22]张双武.基于B/S模式的Web应用在发电企业燃料管理系统的实现[J].电工技术,2012 30(6):23-25.Zhang Shuangwu.Implementation of fuel management system Web application based on B/S model in power plant[J].Electric Engineering,2012,30(6):23-25.
[23]刘照,董泽.基于UML的入厂煤智能管理系统的设计与实现[J].计算机仿真,2014,31(12):64-66.Liu Zhao,Dong Ze.Design and implementation of a feed coal intelligent management system based on UML[J].Computer Simulation,2014,31(12):64-66.
[24]胡光杰,张燕平.分布式数据库在燃料管理系统中的应用[J].计算机技术与发展,2007,17(12):234-236.Hu Guangjie,Zhang Yanping.Application of distributed database in fuel management system[J].Computer Technology and Development,2007,17(12):234-236.
[25]杨宁.电厂燃料管理系统解决方案综述[J].电子技术与软件工程,2014(23):208.Yang Ning.Review of fuel management system technology strategy in fire plant[J].Electronic Technology and Software Engineering,2014(23):208.
[26]李文华,姜利.动力配煤技术的现状及发展[J].中国煤炭,1997(7):13-16.
[27]李胜.包钢配煤系统技术经济研究[J].钢铁,2003,38(11):75-77.Li Sheng.Technico-economical research of Baogang coal blending system[J].Iron&Steel,2003,38(11):75-77.
[28]杨明平,彭荣华,文杰强,等.焦粉配煤炼焦的研究[J].煤炭科学技术,2003,31(11):7-10.Yang Mingping,Peng Ronghua,Wen Jieqiang,et al.Research on coking with blended coke powder[J].Coal Science and Technology,2003,31(11):7-10.
[29]朱哮水,王双童.锅炉配煤掺烧经济性分析评估系统[J].热力发电,2011,40(12):103,105.Zhu Xiaoshui,Wang Shuangtong.Economical analysis and judgement system of boiler coal blending[J].Thermal Power Generation,2011,40(12):103,105.
[30]夏季,陆攀,华志刚,等.电站锅炉全局优化智能配煤模型的建立及系统开发[J].动力工程学报,2010,30(7):512-517.Xia Ji,Lu Pan,Hua Zhigang,et al.Model set-up and system development for intelligent coal blending based on integral optimization of utility boilers[J].Chinese Journal of Power Engineering,2010,30(7):512-517.
[31]马增辉.火电厂燃煤管理系统智能控制的研究[D].北京:华北电力大学,2007.
[32]沈利.燃煤电站锅炉的燃烧优化技术及相关算法应用研究[D].杭州:浙江大学,2011.
[33]郝海波,卢永利,宋小磊,等.精细化智能配煤技术的研究与应用[J].节能,2015(7):43-46.Hao Haibo,Lu Yongli,Song Xiaolei,et al.Study and application of meticulous management on coal blending[J].Energy Conservation,2015(7):43-46.
[34]贾风军.动力配煤技术及其重要意义[J].内蒙古科技与经济,2006(18):127-128.Jia Fengjun.The technology and importance of coal blending[J].Inner Mongolia Science Technology and Economy,2006(18):127-128.
[35]龚德鸿,朱军超,邱靖,等.基于燃烧火用效率的电厂配煤模型[J].贵州大学学报(自然科学版),2009,26(3):82-85.Gong Dehong,Zhu Junchao,Qiu Jing,et al.The model of steam coal blending based on combustion exergy efficiency[J].Journal of Guizhou University(Natural Science),2009,26(3):82-85.
[36]丁海峰.基于煤质全元素在线分析技术的电厂优化配煤研究[D].南京:东南大学,2011.