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The alkali metals released during combustion of high alkali coals can easily lead to fouling and slagging of the heated surfaces of the furnace, affecting the safety of boiler operation, and it is significant to carry out the research of the slagging trend prediction. In this paper, a system for dynamic prediction of slagging trends in the furnace was developed by combining the slagging trend discrimination method based on ash composition analysis with flame emission spectroscopy. Firstly, a flame emission spectroscopy system was installed on the boiler to measure the gas phase alkali metal concentration in the furnace, and then a slagging trends test was carried out in the furnace exit area to obtain the deposition trend of the ash samples. Finally, a dynamic predictive system for predicting slagging in the furnace was developed and applied to the boiler by combining the slagging discriminating trends based on ash composition analysis of different coal samples and online monitoring of gas-phase Na concentrations, which can reflect the monitoring results of each parameter under the current combustion conditions in real-time, indicate the slagging trend in the current combustion state, thus enabling combustion adjustment instructions to prevent severe slagging.

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高碱煤在燃烧过程中释放的碱金属导致炉膛受热面的沾污、结渣问题,影响锅炉运行的安全性,开展炉内结渣趋势的判断研究具有重要意义。采用煤灰成分分析的结渣趋势判别方法与火焰发射光谱技术结合,在锅炉上安装了一套火焰发射光谱系统用于检测炉内气相碱金属质量浓度,使用气冷式取样枪在炉膛出口区域开展结渣试验以获得沉积样的沉积趋势。根据在线监测结果,开发了一种动态预测炉内沾污结渣预报系统。试验结果表明,系统能够实时反映燃烧工况下各参数的监测结果,可以对当前燃烧状态下的结渣趋势进行提示,为预防结渣和进行燃烧调整提供参考。

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王志超(1986),男,博士,高级工程师,主要研究方向为火力发电领域燃料特性及其与锅炉匹配性、准东煤沾污结渣防控等技术,
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黄书益(1969),女,硕士,高级工程师,主要研究方向为ICT、数据分析和人工智能算法及企业数字化转型和智慧电厂建设。

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黄书益(1969),女,硕士,高级工程师,主要研究方向为ICT、数据分析和人工智能算法及企业数字化转型和智慧电厂建设。

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黄书益(1969),女,硕士,高级工程师,主要研究方向为ICT、数据分析和人工智能算法及企业数字化转型和智慧电厂建设。

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耦合炉内气相碱金属检测的结渣预报系统研究
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黄书益 1 , 王志超 2 , 白彬 1 , 岑新坤 1 , 张雄 3 , 蒲旸 3 , 姚斌 3
热力发电 | 燃煤电站智能化管理技术 2023,52(7): 99-105
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热力发电 | 燃煤电站智能化管理技术 2023, 52(7): 99-105
耦合炉内气相碱金属检测的结渣预报系统研究
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黄书益1, 王志超2 , 白彬1, 岑新坤1, 张雄3, 蒲旸3, 姚斌3
作者信息
  • 1.国家能源集团乐东发电有限公司,海南 乐东 572500
  • 2.西安热工研究院有限公司,陕西 西安 710054
  • 3.华中科技大学煤燃烧国家重点实验室,湖北 武汉 430074
  • 黄书益(1969),女,硕士,高级工程师,主要研究方向为ICT、数据分析和人工智能算法及企业数字化转型和智慧电厂建设。

通讯作者:

王志超(1986),男,博士,高级工程师,主要研究方向为火力发电领域燃料特性及其与锅炉匹配性、准东煤沾污结渣防控等技术,
Investigation of slagging prediction system in boilers coupling measurement of gaseous alkali metal in furnace
Shuyi HUANG1, Zhichao WANG2 , Bin BAI1, Xinkun CEN1, Xiong ZHANG3, Yang PU3, Bin YAO3
Affiliations
  • 1.Ledong Power Plant, China Energy, Ledong 572500, China
  • 2.Xian Thermal Power Research Institute Co., Ltd., Xi'an 710054, China
  • 3.State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
出版时间: 2023-07-25 doi: 10.19666/j.rlfd.202305056
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高碱煤在燃烧过程中释放的碱金属导致炉膛受热面的沾污、结渣问题,影响锅炉运行的安全性,开展炉内结渣趋势的判断研究具有重要意义。采用煤灰成分分析的结渣趋势判别方法与火焰发射光谱技术结合,在锅炉上安装了一套火焰发射光谱系统用于检测炉内气相碱金属质量浓度,使用气冷式取样枪在炉膛出口区域开展结渣试验以获得沉积样的沉积趋势。根据在线监测结果,开发了一种动态预测炉内沾污结渣预报系统。试验结果表明,系统能够实时反映燃烧工况下各参数的监测结果,可以对当前燃烧状态下的结渣趋势进行提示,为预防结渣和进行燃烧调整提供参考。

电站锅炉  /  高碱燃料  /  气相碱金属  /  火焰发射光谱  /  结渣

The alkali metals released during combustion of high alkali coals can easily lead to fouling and slagging of the heated surfaces of the furnace, affecting the safety of boiler operation, and it is significant to carry out the research of the slagging trend prediction. In this paper, a system for dynamic prediction of slagging trends in the furnace was developed by combining the slagging trend discrimination method based on ash composition analysis with flame emission spectroscopy. Firstly, a flame emission spectroscopy system was installed on the boiler to measure the gas phase alkali metal concentration in the furnace, and then a slagging trends test was carried out in the furnace exit area to obtain the deposition trend of the ash samples. Finally, a dynamic predictive system for predicting slagging in the furnace was developed and applied to the boiler by combining the slagging discriminating trends based on ash composition analysis of different coal samples and online monitoring of gas-phase Na concentrations, which can reflect the monitoring results of each parameter under the current combustion conditions in real-time, indicate the slagging trend in the current combustion state, thus enabling combustion adjustment instructions to prevent severe slagging.

power plant boiler  /  high alkali fuel  /  gas phase alkali metal  /  flame emission spectroscopy  /  slagging
黄书益, 王志超, 白彬, 岑新坤, 张雄, 蒲旸, 姚斌. 耦合炉内气相碱金属检测的结渣预报系统研究. 热力发电, 2023 , 52 (7) : 99 -105 . DOI: 10.19666/j.rlfd.202305056
Shuyi HUANG, Zhichao WANG, Bin BAI, Xinkun CEN, Xiong ZHANG, Yang PU, Bin YAO. Investigation of slagging prediction system in boilers coupling measurement of gaseous alkali metal in furnace[J]. Thermal Power Generation, 2023 , 52 (7) : 99 -105 . DOI: 10.19666/j.rlfd.202305056
  • 国家重点研发计划项目(2022YFB4202002)
2023年第52卷第7期
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doi: 10.19666/j.rlfd.202305056
  • 接收时间:2023-05-04
  • 首发时间:2026-01-26
  • 出版时间:2023-07-25
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  • 收稿日期:2023-05-04
基金
National Key Research and Development Program(2022YFB4202002)
国家重点研发计划项目(2022YFB4202002)
作者信息
    1.国家能源集团乐东发电有限公司,海南 乐东 572500
    2.西安热工研究院有限公司,陕西 西安 710054
    3.华中科技大学煤燃烧国家重点实验室,湖北 武汉 430074

通讯作者:

王志超(1986),男,博士,高级工程师,主要研究方向为火力发电领域燃料特性及其与锅炉匹配性、准东煤沾污结渣防控等技术,
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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