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激光衍射法测定煤粉细度的试验研究.

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Title: 激光衍射法测定煤粉细度的试验研究.
Alternate Title: Experimental study on measuring fineness of pulverized coal by laser diffraction method.
Authors: 吴锁贞1 15905166912@139.com, 杜晓光2, 赵 雯1, 刘 爽3
Source: Clean Coal Technology. 2025 Supplement, Vol. 31, p707-711. 5p.
Subject Terms: *Pulverized coal, *Optical diffraction, *Steam power plants, *Size reduction of materials, *Statistical accuracy, *Grain size
Abstract (English): Fineness of pulverized coal is an important daily supervision and inspection item for pulverized coal as fired of thermal power plants. It is of great significance to supervise the normal operation of the pulverizer, guide the combustion of pulverized coal in the boiler, and ensure the safe, economical and environmentally friendly operation of the coal-fired unit. At present, the methods for measuring the fineness of pulverized coal in thermal power plants mainly include sieving method, laser diffraction method and online measurement method, etc. Among them, the laser diffraction method has the advantages of short measurement cycle, high accuracy and convenient operation. Most of the publicly reported studies on the laser diffraction method for determining fineness of pulverized coal use wet injection method, while pulverized coal in thermal power plants is actually used in a dry powder state, and pulverized coal may swell when immersed in a solution. In order to further study and establish a method for determining the fineness of pulverized coal using dry injection by laser diffraction method, the effects of parameters such as data collection time, dispersion pressure, and shading degree on the measurement results of pulverized coal fineness were studied, and the optimal measurement conditions were determined to be: collection time of 5 s, dispersion pressure of 0.3 MPa, and shading degree of 2% to 5%. At the same time, collaborative experiments were carried out to compare and analyze the measurement results of the laser diffraction method and the sieving method. The results showed that the dry injection laser diffraction method was accurate, simple and repeatable, and suitable for the determination pf fineness of pulverized coal. [ABSTRACT FROM AUTHOR]
Abstract (Chinese): 煤粉细度作为火力发电厂入炉煤粉的一项重要日常监督检验项目, 对监督磨煤机的正常运行、 指导锅炉内煤粉燃烧、保障机组安全经济环保运行具有重要意义。目前火电厂煤粉细度测定方法主要 包括重量筛分法、激光衍射法和在线测量法等, 其中, 激光衍射法具有测定周期短、精度高、操作方便等 优点。目前针对激光衍射法测定煤粉细度的研究大多都采用湿法进样方式, 而火电厂煤粉实际是在干 粉状态下使用的, 煤粉浸泡在溶液中可能产生溶胀现象。为了进一步研究建立干法进样激光衍射法测 定煤粉粒度方法, 通过试验研究了数据采集时间、分散压力、遮光度等参数对煤粉细度测定结果的影 响, 确定最佳测定条件为: 采集时间 5 s 、分散压力 0.3 MPa、遮光度 2%～5%。同时, 开展激光衍射法与 筛分法协同试验, 将 2 种方法的测定结果进行对比分析。结果表明, 干法进样激光衍射法准确、简便、 重复性好, 可用于煤粉细度的测定。 [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
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PubType: Academic Journal
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  Label: Title
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  Data: 激光衍射法测定煤粉细度的试验研究.
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  Label: Alternate Title
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  Data: Experimental study on measuring fineness of pulverized coal by laser diffraction method.
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  Data: <searchLink fieldCode="AR" term="%22吴锁贞%22">吴锁贞</searchLink><relatesTo>1</relatesTo><i> 15905166912@139.com</i><br /><searchLink fieldCode="AR" term="%22杜晓光%22">杜晓光</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22赵+雯%22">赵 雯</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22刘+爽%22">刘 爽</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Clean+Coal+Technology%22">Clean Coal Technology</searchLink>. 2025 Supplement, Vol. 31, p707-711. 5p.
– Name: Subject
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  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Pulverized+coal%22">Pulverized coal</searchLink><br />*<searchLink fieldCode="DE" term="%22Optical+diffraction%22">Optical diffraction</searchLink><br />*<searchLink fieldCode="DE" term="%22Steam+power+plants%22">Steam power plants</searchLink><br />*<searchLink fieldCode="DE" term="%22Size+reduction+of+materials%22">Size reduction of materials</searchLink><br />*<searchLink fieldCode="DE" term="%22Statistical+accuracy%22">Statistical accuracy</searchLink><br />*<searchLink fieldCode="DE" term="%22Grain+size%22">Grain size</searchLink>
– Name: Abstract
  Label: Abstract (English)
  Group: Ab
  Data: Fineness of pulverized coal is an important daily supervision and inspection item for pulverized coal as fired of thermal power plants. It is of great significance to supervise the normal operation of the pulverizer, guide the combustion of pulverized coal in the boiler, and ensure the safe, economical and environmentally friendly operation of the coal-fired unit. At present, the methods for measuring the fineness of pulverized coal in thermal power plants mainly include sieving method, laser diffraction method and online measurement method, etc. Among them, the laser diffraction method has the advantages of short measurement cycle, high accuracy and convenient operation. Most of the publicly reported studies on the laser diffraction method for determining fineness of pulverized coal use wet injection method, while pulverized coal in thermal power plants is actually used in a dry powder state, and pulverized coal may swell when immersed in a solution. In order to further study and establish a method for determining the fineness of pulverized coal using dry injection by laser diffraction method, the effects of parameters such as data collection time, dispersion pressure, and shading degree on the measurement results of pulverized coal fineness were studied, and the optimal measurement conditions were determined to be: collection time of 5 s, dispersion pressure of 0.3 MPa, and shading degree of 2% to 5%. At the same time, collaborative experiments were carried out to compare and analyze the measurement results of the laser diffraction method and the sieving method. The results showed that the dry injection laser diffraction method was accurate, simple and repeatable, and suitable for the determination pf fineness of pulverized coal. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (Chinese)
  Group: Ab
  Data: 煤粉细度作为火力发电厂入炉煤粉的一项重要日常监督检验项目, 对监督磨煤机的正常运行、 指导锅炉内煤粉燃烧、保障机组安全经济环保运行具有重要意义。目前火电厂煤粉细度测定方法主要 包括重量筛分法、激光衍射法和在线测量法等, 其中, 激光衍射法具有测定周期短、精度高、操作方便等 优点。目前针对激光衍射法测定煤粉细度的研究大多都采用湿法进样方式, 而火电厂煤粉实际是在干 粉状态下使用的, 煤粉浸泡在溶液中可能产生溶胀现象。为了进一步研究建立干法进样激光衍射法测 定煤粉粒度方法, 通过试验研究了数据采集时间、分散压力、遮光度等参数对煤粉细度测定结果的影 响, 确定最佳测定条件为: 采集时间 5 s 、分散压力 0.3 MPa、遮光度 2%～5%。同时, 开展激光衍射法与 筛分法协同试验, 将 2 种方法的测定结果进行对比分析。结果表明, 干法进样激光衍射法准确、简便、 重复性好, 可用于煤粉细度的测定。 [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.13226/j.issn.1006-6772.24060702
    Languages:
      – Code: chi
        Text: Chinese
    PhysicalDescription:
      Pagination:
        PageCount: 5
        StartPage: 707
    Subjects:
      – SubjectFull: Pulverized coal
        Type: general
      – SubjectFull: Optical diffraction
        Type: general
      – SubjectFull: Steam power plants
        Type: general
      – SubjectFull: Size reduction of materials
        Type: general
      – SubjectFull: Statistical accuracy
        Type: general
      – SubjectFull: Grain size
        Type: general
    Titles:
      – TitleFull: 激光衍射法测定煤粉细度的试验研究.
        Type: main
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            NameFull: 吴锁贞
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            NameFull: 杜晓光
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            NameFull: 赵 雯
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            NameFull: 刘 爽
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            – D: 02
              M: 09
              Text: 2025 Supplement
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              Y: 2025
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            – TitleFull: Clean Coal Technology
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