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A study on fragmentation and emissions characteristics during combustion of injected pulverizcred coal.

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Title: A study on fragmentation and emissions characteristics during combustion of injected pulverizcred coal.
Authors: Yan, Dawei1 (AUTHOR), Li, Meng1 (AUTHOR), Zou, Linjiang1 (AUTHOR) dw9527@ahut.edu.cn, Gu, Mingyan1 (AUTHOR) gumy@ahut.edu.cn, Li, Maomao1 (AUTHOR), Wang, Fulin1 (AUTHOR)
Source: Fuel (0016-2361). Feb2022, Vol. 309, pN.PAG-N.PAG. 1p.
Subjects: Coal combustion, Pulverized coal, Flame, Coal, Combustion efficiency, Combustion
Abstract: • Coal Ignition is affected by its volatile content and fragmentation. • The flame fronts of different coal have different fluctuation periodicities. • Fragmentation may enhance the combustion efficiency of pulverized coal. • The surface functional groups of char affects the characteristics of emissions. In this paper, an experimental system of pulverized coal carrying flow combustion based on a flat-flame diffusion flame burner was built. The coal combustion characteristics including ignition process, coal fragmentation and surface morphology were investigated, and the CO and CO 2 emission characteristics of pulverized coal during combustion, and the changing pattern of functional groups on the surface of coal char. As indicated by the experimental results, the flame front of the pulverized coal combustion fluctuates periodically, and the fluctuation frequency exerts an influence on the stability of the temperature field around the pulverized coal particles. While increasing the specific surface area of the pulverized coal, fragmentation during combustion reduces the particle size of the pulverized coal. Pulverized coal with fragmentation characteristics shows a higher combustion efficiency in blast furnace injection. The content of functional groups on the surface of coal particles has an effect on the production of CO and CO 2 , and the increase in the oxygen-containing functional groups on the surface of coal char promotes the generation of CO. [ABSTRACT FROM AUTHOR]
Copyright of Fuel (0016-2361) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 154387474
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: A study on fragmentation and emissions characteristics during combustion of injected pulverizcred coal.
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  Data: <searchLink fieldCode="AR" term="%22Yan%2C+Dawei%22">Yan, Dawei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Meng%22">Li, Meng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zou%2C+Linjiang%22">Zou, Linjiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> dw9527@ahut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Gu%2C+Mingyan%22">Gu, Mingyan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> gumy@ahut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Maomao%22">Li, Maomao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Fulin%22">Wang, Fulin</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Fuel+%280016-2361%29%22">Fuel (0016-2361)</searchLink>. Feb2022, Vol. 309, pN.PAG-N.PAG. 1p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Coal+combustion%22">Coal combustion</searchLink><br /><searchLink fieldCode="DE" term="%22Pulverized+coal%22">Pulverized coal</searchLink><br /><searchLink fieldCode="DE" term="%22Flame%22">Flame</searchLink><br /><searchLink fieldCode="DE" term="%22Coal%22">Coal</searchLink><br /><searchLink fieldCode="DE" term="%22Combustion+efficiency%22">Combustion efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Combustion%22">Combustion</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Coal Ignition is affected by its volatile content and fragmentation. • The flame fronts of different coal have different fluctuation periodicities. • Fragmentation may enhance the combustion efficiency of pulverized coal. • The surface functional groups of char affects the characteristics of emissions. In this paper, an experimental system of pulverized coal carrying flow combustion based on a flat-flame diffusion flame burner was built. The coal combustion characteristics including ignition process, coal fragmentation and surface morphology were investigated, and the CO and CO 2 emission characteristics of pulverized coal during combustion, and the changing pattern of functional groups on the surface of coal char. As indicated by the experimental results, the flame front of the pulverized coal combustion fluctuates periodically, and the fluctuation frequency exerts an influence on the stability of the temperature field around the pulverized coal particles. While increasing the specific surface area of the pulverized coal, fragmentation during combustion reduces the particle size of the pulverized coal. Pulverized coal with fragmentation characteristics shows a higher combustion efficiency in blast furnace injection. The content of functional groups on the surface of coal particles has an effect on the production of CO and CO 2 , and the increase in the oxygen-containing functional groups on the surface of coal char promotes the generation of CO. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Fuel (0016-2361) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.fuel.2021.122152
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Coal combustion
        Type: general
      – SubjectFull: Pulverized coal
        Type: general
      – SubjectFull: Flame
        Type: general
      – SubjectFull: Coal
        Type: general
      – SubjectFull: Combustion efficiency
        Type: general
      – SubjectFull: Combustion
        Type: general
    Titles:
      – TitleFull: A study on fragmentation and emissions characteristics during combustion of injected pulverizcred coal.
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          Name:
            NameFull: Yan, Dawei
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            NameFull: Li, Meng
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            NameFull: Zou, Linjiang
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            NameFull: Gu, Mingyan
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            NameFull: Li, Maomao
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            NameFull: Wang, Fulin
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          Dates:
            – D: 01
              M: 02
              Text: Feb2022
              Type: published
              Y: 2022
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              Value: 00162361
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              Value: 309
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            – TitleFull: Fuel (0016-2361)
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