动力用煤的热重燃烧性能测试及评价
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摘要
为了通过热重分析得出不同煤种的燃烧性能,本试验通过优化试验条件,得出试样的燃烧失重TG和燃烧速率DTG曲线,并通过有效特征指标提取,得出了能够反映单一煤样及混煤的着火和燃尽性能的CSI和BI指数的计算方法及评价标准,并将CSI和BI指标分别和已经得到广泛工业应用的煤粉气流着火温度IT和一维火焰炉燃尽率Bp进行了相关性分析。结果表明,在静态燃烧条件下得到的热重燃烧性能指标具有足够的判别精度,试验结果能够指导煤粉在电站锅炉的工程应用。
In order to obtain the combustion performance of different coals by thermogravimetric analysis, the test conditions were optimized, and the TG and DTG curves of coal samples were obtained. Moreover, through effective feature index extraction, the calculation method and evaluation standard of the CSI and BI index which can reflect the ignition and burnout properties of single coal and mixed coal were obtained. The correlation analysis between CSI and BI indexes and the ignition temperature IT of pulverized coal flow and the burnout rate of one-dimensional flame furnace(Bp)(the IT and Bp have been widely used in industries) were carried out. The results show that, the thermogravimetric combustion performance indexes obtained under static combustion conditions have sufficient discrimination accuracy and the test result can guide the engineering application of pulverized coal in utility boilers.
In order to obtain the combustion performance of different coals by thermogravimetric analysis, the test conditions were optimized, and the TG and DTG curves of coal samples were obtained. Moreover, through effective feature index extraction, the calculation method and evaluation standard of the CSI and BI index which can reflect the ignition and burnout properties of single coal and mixed coal were obtained. The correlation analysis between CSI and BI indexes and the ignition temperature IT of pulverized coal flow and the burnout rate of one-dimensional flame furnace(Bp)(the IT and Bp have been widely used in industries) were carried out. The results show that, the thermogravimetric combustion performance indexes obtained under static combustion conditions have sufficient discrimination accuracy and the test result can guide the engineering application of pulverized coal in utility boilers.
引文
[1]赵凤杰,刘剑.煤的热重分析技术及其应用[J].辽宁工程技术大学学报(自然科学版),2005,24(增刊2):25-27.ZHAO Fengjie,LIU Jian.Thermogravimetric analysis and application of coal[J].Journal of Liaoning Technical University(Natural Science Edition),2005,24(Suppl.2):25-27.
[2]胡文斌,杨海瑞,吕俊复,等.煤着火特性的热重分析研究[J].电站系统工程,2005,21(2):8-9.HU Wenbin,YANG Hairui,LV Junfu,et al.Study on ignition properties of coals by using thermogravimetry[J].Power System Engineering,2005,21(2):8-9.
[3]周英彪,范杜平,段权鹏,等.基于热天平着火温度的新方法[J].电站系统工程,2007,23(3):29-31.ZHOU Yingbiao,FAN Duping,DUAN Quanpeng,et al.Anew method for temperature of the kindling point based on thermal balance[J].Power System Engineering,2007,23(3):29-31.
[4]祝文杰,周永刚,赵虹.单煤热天平着火温度指数的建立[J].能源工程,2006(4):14-17.ZHU Wenjie,ZHOU Yonggang,ZHAO Hong.The establishment of the pure coal ignition temperature index under the condition of thermobalance[J].Energy Engineering,2006(4):14-17.
[5]方立军,高正阳,阎维平.利用热天平对电厂混煤燃尽特性的实验研究[J].华北电力技术,2001,1(1):7-9.FANG Lijun,GAO Zhengyang,YAN Weiping.Experiment study on burn out characteristic of blended coal in power plant by thermobalance[J].North China Electric Power,2001,1(1):7-9.
[6]肖三霞,方庆艳,傅培舫,等.煤的热天平燃烧反应动力学特性的研究[J].工程热物理学报,2004,25(5):891-893.XIAO Sanxia,FANG Qingyan,FU Peifang,et al.An experimental study on the chemical reaction kinetics of coal by thermogravimetry analysis[J].Journal of Engineering Thermophysics,2004,25(5):891-893.
[7]煤粉气流着火温度的测定方法:DL/T 1446-2015[S].北京:中国电力出版社,2015:1-2.Test methods for pulverized coal combustion slagging characteristics and burnout rate on one-dimensional flame furnace:DL/T 1446-2015[S].Beijing:China Electric Power Press,2015:1-2.
[8]煤粉燃烧结渣特性和燃尽率一维火焰炉测试方法:DL/T1106-2009[S].北京:中国电力出版社,2009:2-5.Measurement of ignition temperature of pulverized coalair flow:DL/T 1106-2009[S].Beijing:China Electric Power Press,2015:2-5.
[9]朱群益,秦裕琨,吴少华,等.不同热天平煤粉燃烧特性试验差异的原因分析[J].热能动力工程,2002,17(4):363-366.ZHU Qunyi,QIN Yukun,WU Shaohua,et al.An analysis of the factors causing differences in the test results of pulverized coal combustion obtained from using different thermobalances[J].Journal of Engineering for Thermal Energy and Power,2002,17(4):363-366.
[10]祝文杰,周永刚,杨建国,等.用热天平研究煤的燃烧特性[J].煤炭科学技术,2004,32(3):8-11.ZHU Wenjie,ZHOU Yonggang,YANG Jianguo,et al.Study on coal combustion features with thermal balance[J].Coal Science and Technology,2004,32(3):8-11.
[11]徐朝芬,孙学信,郭欣.热重分析试验中影响热重曲线的主要因素分析[J].热力发电,2005,34(6):34-36.XU Chaofen,SUN Xuexin,GUO Xin.Analysis of main factors affecting thermogravimetric curves in thermogravimetric analysis[J].Thermal Power Generation,2005,34(6):34-36.
[12]王淑勤,肖乐勤.热重分析曲线影响因素的研究与探索[J].河北化工,2005(4):78-79.WANG Shuqin,XIAO Leqin.Research and exploration of the influence factors of the thermogravimetric analysis curve[J].Hebei Chemical Industry,2005(4):78-79.
[13]刁静人.热重分析结果的影响因素分析[J].磁性材料及器件,2012(6):49-52.DIAO Jingren.Influencing factors of thermogravimetric analysis results[J].Journal of Magnetic Materials and Devices,2012(6):49-52.
[14]龚柏云,彭敏,熊蔚立,等.西山烟煤与阳泉无烟煤及其混煤的燃烧性能研究[J].热力发电,2003,32(4):17-20.GONG Boyun,PENG Min,XIONG Weili,et al.A Study on combustion performance of Xishan bituminous coal,Yangquan anthracitic coal,and their blended coal[J].Thermal Power Generation,2003,32(4):17-20.
[15]徐朝芬.烟煤与无烟煤混燃特性的热分析试验研究[J].华北电力大学学报,2005,32(6):29-32.XU Chaofen.Study on thermoanalysis experiment of combustion characteristics of blended coal[J].Journal of North China Electric Power University,2005,32(6):29-32.
[16]高正阳,方立军,周健,等.混煤燃烧特性的热重试验研究[J].动力工程学报,2002,22(3):1764-1767.GAO Zhengyang,FANG Lijun,ZHOU Jian,et al.Research on the combustion performance of blended coal in thermal-balance[J].Power Engineering,2002,22(3):1764-1767.
[2]胡文斌,杨海瑞,吕俊复,等.煤着火特性的热重分析研究[J].电站系统工程,2005,21(2):8-9.HU Wenbin,YANG Hairui,LV Junfu,et al.Study on ignition properties of coals by using thermogravimetry[J].Power System Engineering,2005,21(2):8-9.
[3]周英彪,范杜平,段权鹏,等.基于热天平着火温度的新方法[J].电站系统工程,2007,23(3):29-31.ZHOU Yingbiao,FAN Duping,DUAN Quanpeng,et al.Anew method for temperature of the kindling point based on thermal balance[J].Power System Engineering,2007,23(3):29-31.
[4]祝文杰,周永刚,赵虹.单煤热天平着火温度指数的建立[J].能源工程,2006(4):14-17.ZHU Wenjie,ZHOU Yonggang,ZHAO Hong.The establishment of the pure coal ignition temperature index under the condition of thermobalance[J].Energy Engineering,2006(4):14-17.
[5]方立军,高正阳,阎维平.利用热天平对电厂混煤燃尽特性的实验研究[J].华北电力技术,2001,1(1):7-9.FANG Lijun,GAO Zhengyang,YAN Weiping.Experiment study on burn out characteristic of blended coal in power plant by thermobalance[J].North China Electric Power,2001,1(1):7-9.
[6]肖三霞,方庆艳,傅培舫,等.煤的热天平燃烧反应动力学特性的研究[J].工程热物理学报,2004,25(5):891-893.XIAO Sanxia,FANG Qingyan,FU Peifang,et al.An experimental study on the chemical reaction kinetics of coal by thermogravimetry analysis[J].Journal of Engineering Thermophysics,2004,25(5):891-893.
[7]煤粉气流着火温度的测定方法:DL/T 1446-2015[S].北京:中国电力出版社,2015:1-2.Test methods for pulverized coal combustion slagging characteristics and burnout rate on one-dimensional flame furnace:DL/T 1446-2015[S].Beijing:China Electric Power Press,2015:1-2.
[8]煤粉燃烧结渣特性和燃尽率一维火焰炉测试方法:DL/T1106-2009[S].北京:中国电力出版社,2009:2-5.Measurement of ignition temperature of pulverized coalair flow:DL/T 1106-2009[S].Beijing:China Electric Power Press,2015:2-5.
[9]朱群益,秦裕琨,吴少华,等.不同热天平煤粉燃烧特性试验差异的原因分析[J].热能动力工程,2002,17(4):363-366.ZHU Qunyi,QIN Yukun,WU Shaohua,et al.An analysis of the factors causing differences in the test results of pulverized coal combustion obtained from using different thermobalances[J].Journal of Engineering for Thermal Energy and Power,2002,17(4):363-366.
[10]祝文杰,周永刚,杨建国,等.用热天平研究煤的燃烧特性[J].煤炭科学技术,2004,32(3):8-11.ZHU Wenjie,ZHOU Yonggang,YANG Jianguo,et al.Study on coal combustion features with thermal balance[J].Coal Science and Technology,2004,32(3):8-11.
[11]徐朝芬,孙学信,郭欣.热重分析试验中影响热重曲线的主要因素分析[J].热力发电,2005,34(6):34-36.XU Chaofen,SUN Xuexin,GUO Xin.Analysis of main factors affecting thermogravimetric curves in thermogravimetric analysis[J].Thermal Power Generation,2005,34(6):34-36.
[12]王淑勤,肖乐勤.热重分析曲线影响因素的研究与探索[J].河北化工,2005(4):78-79.WANG Shuqin,XIAO Leqin.Research and exploration of the influence factors of the thermogravimetric analysis curve[J].Hebei Chemical Industry,2005(4):78-79.
[13]刁静人.热重分析结果的影响因素分析[J].磁性材料及器件,2012(6):49-52.DIAO Jingren.Influencing factors of thermogravimetric analysis results[J].Journal of Magnetic Materials and Devices,2012(6):49-52.
[14]龚柏云,彭敏,熊蔚立,等.西山烟煤与阳泉无烟煤及其混煤的燃烧性能研究[J].热力发电,2003,32(4):17-20.GONG Boyun,PENG Min,XIONG Weili,et al.A Study on combustion performance of Xishan bituminous coal,Yangquan anthracitic coal,and their blended coal[J].Thermal Power Generation,2003,32(4):17-20.
[15]徐朝芬.烟煤与无烟煤混燃特性的热分析试验研究[J].华北电力大学学报,2005,32(6):29-32.XU Chaofen.Study on thermoanalysis experiment of combustion characteristics of blended coal[J].Journal of North China Electric Power University,2005,32(6):29-32.
[16]高正阳,方立军,周健,等.混煤燃烧特性的热重试验研究[J].动力工程学报,2002,22(3):1764-1767.GAO Zhengyang,FANG Lijun,ZHOU Jian,et al.Research on the combustion performance of blended coal in thermal-balance[J].Power Engineering,2002,22(3):1764-1767.