330 MW循环流化床锅炉燃烧调整试验研究
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摘要
为解决某330 MW循环流化床(circulating fluidized bed,CFB)锅炉运行床温分布不均匀、炉内受热面磨损爆管等问题,进行了锅炉的燃烧优化调整试验。结果表明,通过优化一次风量、总风量及风室压力等关键运行参数,确定了最佳运行工况及参数,降低了锅炉灰渣平均可燃物含量,使锅炉热效率提高0.85%。燃烧优化调整试验还使一、二次风机总功率降低了0.8 MW,厂用电率相应降低了0.24%,锅炉的运行安全性和经济性由此得到进一步提高。
A circulating fluidized bed(CFB) boiler of the 330 MW unit have problems such as nonuniform bed temperature, heating surface wear, tube burst and so on.Combustion optimizing adjustment test was carried out to solve these problems. Adjustment test result show that through key operation parameters such as optimizing primary air flow, total air flow and wind-box pressure, the best operation condition and parameters are determined,average carbon content in bottom ash and fly ash is reduced,boiler thermal efficiency is increased by 0.85%. Total power of primary air fan and secondary air fan is reduced by0.8 MW, auxiliary power rate also is decreased by 0.24%.Operational safety and economy of the boiler has been further improved.
A circulating fluidized bed(CFB) boiler of the 330 MW unit have problems such as nonuniform bed temperature, heating surface wear, tube burst and so on.Combustion optimizing adjustment test was carried out to solve these problems. Adjustment test result show that through key operation parameters such as optimizing primary air flow, total air flow and wind-box pressure, the best operation condition and parameters are determined,average carbon content in bottom ash and fly ash is reduced,boiler thermal efficiency is increased by 0.85%. Total power of primary air fan and secondary air fan is reduced by0.8 MW, auxiliary power rate also is decreased by 0.24%.Operational safety and economy of the boiler has been further improved.
引文
[1]索疆舜,崔志刚,马素霞.CFB锅炉飞灰含碳量影响因素分析[J].热力发电,2016,45(7):84-92.
[2]胡玉,吴海波.330 MW CFB锅炉燃烧调整与经济运行技术研究[J].电站系统工程,2016,32(5):23-27.
[3]洪喜生.300 MW机组循环流化床锅炉低氧量燃烧优化调整试验分析[J].内蒙古电力技术,2016,34(2):56-58.
[4]钟犁,徐正泉,曹幸卫,等.300 MW机组循环流化床锅炉燃烧调整的试验研究[J].热力发电,2012,41(5):69-76.
[5]孙献斌,黄中.大型循环流化床锅炉技术与工程应用[M].北京:中国电力出版社,2009.
[6]张建春,马素霞,武卫红.循环流化床锅炉不同负荷下燃烧份额的分布研究[J].太原理工大学学报,2010,41(1):65-68.
[7]李德波,孙超凡,冯永新,等.300 MW循环流化床气固流动及燃烧过程数值模拟研究及工程应用[J].广东电力,2018,31(7):56-65.
[8]殷术贵,吴智恒,张华伟,等.循环流化床锅炉燃烧过程仿真研究[J].广东电力,2016,29(1):8-10.
[9]黄中,郭钛星,梁进林,等.300 MW CFB锅炉床温偏差大原因分析及与改造[J].热力发电,2016,45(11):68-74.
[10]杨勇,刘海峰,王海涛,等.1 177 t/h循环流化床锅炉燃烧优化调整试验及结果分析[J].热力发电,2012,41(1):53-55.
[11]曹兴伟,李明亮.300 MW CFB锅炉控制与燃烧调整[J].云南电力技术,2006,34(10):28-29,38.
[12]何映光.300 MW循环流化床锅炉技术改造分析[J].锅炉制造,2014(1):21-23.
[13]徐勃,赵海,高强.火力发电厂受热面管泄漏原因分析[J].发电技术,2018,39(6):537-541.
[14]俞旷,王甲安,王涛英,等.电厂锅炉末级过热器爆管原因分析[J].发电技术,2019,40(2):192-195.
[15]孙献斌,于龙,时正海,等.国产330 MW CFB锅炉设计研究[J].热力发电,2009,38(11):19-22.
[16]孙献斌,石波,时正海,等.国产330 MW CFB锅炉调节及变负荷性能[J].中国电力,2013,46(9):16-20.
[17]孙献斌,张宗珩,时正海,等.大型CFB锅炉节能降耗技术研究[J].中国电机工程学报,2012,32(12):252-254.
[18]金森旺,刘彬,惠艳,等.300 MW CFB锅炉提高SO2超低排放经济性试验研究[J].洁净煤技术,2017,23(4):77-83.
[19]李楠,赵鹏勃,施斌,等.330 MW循环流化床锅炉的燃烧优化试验研究[J].洁净煤技术,2018,24(3):85-90.
[20]杨海瑞,肖显斌,王进伟,等.循环流化床锅炉床压降对飞灰含碳量的影响[J].电站系统工程,2005,21(3):13-14.
[2]胡玉,吴海波.330 MW CFB锅炉燃烧调整与经济运行技术研究[J].电站系统工程,2016,32(5):23-27.
[3]洪喜生.300 MW机组循环流化床锅炉低氧量燃烧优化调整试验分析[J].内蒙古电力技术,2016,34(2):56-58.
[4]钟犁,徐正泉,曹幸卫,等.300 MW机组循环流化床锅炉燃烧调整的试验研究[J].热力发电,2012,41(5):69-76.
[5]孙献斌,黄中.大型循环流化床锅炉技术与工程应用[M].北京:中国电力出版社,2009.
[6]张建春,马素霞,武卫红.循环流化床锅炉不同负荷下燃烧份额的分布研究[J].太原理工大学学报,2010,41(1):65-68.
[7]李德波,孙超凡,冯永新,等.300 MW循环流化床气固流动及燃烧过程数值模拟研究及工程应用[J].广东电力,2018,31(7):56-65.
[8]殷术贵,吴智恒,张华伟,等.循环流化床锅炉燃烧过程仿真研究[J].广东电力,2016,29(1):8-10.
[9]黄中,郭钛星,梁进林,等.300 MW CFB锅炉床温偏差大原因分析及与改造[J].热力发电,2016,45(11):68-74.
[10]杨勇,刘海峰,王海涛,等.1 177 t/h循环流化床锅炉燃烧优化调整试验及结果分析[J].热力发电,2012,41(1):53-55.
[11]曹兴伟,李明亮.300 MW CFB锅炉控制与燃烧调整[J].云南电力技术,2006,34(10):28-29,38.
[12]何映光.300 MW循环流化床锅炉技术改造分析[J].锅炉制造,2014(1):21-23.
[13]徐勃,赵海,高强.火力发电厂受热面管泄漏原因分析[J].发电技术,2018,39(6):537-541.
[14]俞旷,王甲安,王涛英,等.电厂锅炉末级过热器爆管原因分析[J].发电技术,2019,40(2):192-195.
[15]孙献斌,于龙,时正海,等.国产330 MW CFB锅炉设计研究[J].热力发电,2009,38(11):19-22.
[16]孙献斌,石波,时正海,等.国产330 MW CFB锅炉调节及变负荷性能[J].中国电力,2013,46(9):16-20.
[17]孙献斌,张宗珩,时正海,等.大型CFB锅炉节能降耗技术研究[J].中国电机工程学报,2012,32(12):252-254.
[18]金森旺,刘彬,惠艳,等.300 MW CFB锅炉提高SO2超低排放经济性试验研究[J].洁净煤技术,2017,23(4):77-83.
[19]李楠,赵鹏勃,施斌,等.330 MW循环流化床锅炉的燃烧优化试验研究[J].洁净煤技术,2018,24(3):85-90.
[20]杨海瑞,肖显斌,王进伟,等.循环流化床锅炉床压降对飞灰含碳量的影响[J].电站系统工程,2005,21(3):13-14.