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Investigation into Effect of Adding Coal Suspension on Combustion Stability and Methane Lower Flammability Limit in Methane–Air Mixtures.

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Title: Investigation into Effect of Adding Coal Suspension on Combustion Stability and Methane Lower Flammability Limit in Methane–Air Mixtures.
Authors: Pinaev, A. V.1 (AUTHOR) avpin51@mail.ru, Pinaev, P. A.1,2 (AUTHOR) pavel_academ@mail.ru
Source: Combustion, Explosion, & Shock Waves. Apr2026, Vol. 62 Issue 2, p261-270. 10p.
Subject Terms: *Flame stability, *Flammable limits, *Flame, *Burning velocity, *Atmospheric methane, *Pulverized coal, *Gas mixtures
Abstract: This paper presents a study on the possibility of combustion waves in /air gas mixtures and heterogeneous dual-fuel mixtures (HDMs) /air/coal suspension with methane bulk concentration % in a closed vertical shock tube and in a horizontal quartz tube open at one end. It has been shown that the value of the methane lower flammability limit (LFL) and the flame stability depend on the channel location relative to the gravity vector and on the coal suspension concentration. In a vertical closed channel, combustion waves propagated from top to bottom in gas mixtures and HDMs at %, whereas mixtures did not ignite at %. In a horizontal tube, flame propagated at % in gas mixtures and at % in HDMs. Adding coal suspension to methane–air mixtures has little effect on the flame velocity, increases the flame brightness, and lowers the LFL. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
FullText Text:
  Availability: 0
Header DbId: enr
DbLabel: Energy & Power Source
An: 193494538
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Investigation into Effect of Adding Coal Suspension on Combustion Stability and Methane Lower Flammability Limit in Methane–Air Mixtures.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Pinaev%2C+A%2E+V%2E%22">Pinaev, A. V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> avpin51@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Pinaev%2C+P%2E+A%2E%22">Pinaev, P. A.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> pavel_academ@mail.ru</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Combustion%2C+Explosion%2C+%26+Shock+Waves%22">Combustion, Explosion, & Shock Waves</searchLink>. Apr2026, Vol. 62 Issue 2, p261-270. 10p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Flame+stability%22">Flame stability</searchLink><br />*<searchLink fieldCode="DE" term="%22Flammable+limits%22">Flammable limits</searchLink><br />*<searchLink fieldCode="DE" term="%22Flame%22">Flame</searchLink><br />*<searchLink fieldCode="DE" term="%22Burning+velocity%22">Burning velocity</searchLink><br />*<searchLink fieldCode="DE" term="%22Atmospheric+methane%22">Atmospheric methane</searchLink><br />*<searchLink fieldCode="DE" term="%22Pulverized+coal%22">Pulverized coal</searchLink><br />*<searchLink fieldCode="DE" term="%22Gas+mixtures%22">Gas mixtures</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This paper presents a study on the possibility of combustion waves in /air gas mixtures and heterogeneous dual-fuel mixtures (HDMs) /air/coal suspension with methane bulk concentration % in a closed vertical shock tube and in a horizontal quartz tube open at one end. It has been shown that the value of the methane lower flammability limit (LFL) and the flame stability depend on the channel location relative to the gravity vector and on the coal suspension concentration. In a vertical closed channel, combustion waves propagated from top to bottom in gas mixtures and HDMs at %, whereas mixtures did not ignite at %. In a horizontal tube, flame propagated at % in gas mixtures and at % in HDMs. Adding coal suspension to methane–air mixtures has little effect on the flame velocity, increases the flame brightness, and lowers the LFL. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=193494538
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1134/S0010508226700073
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 261
    Subjects:
      – SubjectFull: Flame stability
        Type: general
      – SubjectFull: Flammable limits
        Type: general
      – SubjectFull: Flame
        Type: general
      – SubjectFull: Burning velocity
        Type: general
      – SubjectFull: Atmospheric methane
        Type: general
      – SubjectFull: Pulverized coal
        Type: general
      – SubjectFull: Gas mixtures
        Type: general
    Titles:
      – TitleFull: Investigation into Effect of Adding Coal Suspension on Combustion Stability and Methane Lower Flammability Limit in Methane–Air Mixtures.
        Type: main
  BibRelationships:
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      – PersonEntity:
          Name:
            NameFull: Pinaev, A. V.
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          Name:
            NameFull: Pinaev, P. A.
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          Dates:
            – D: 01
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 00105082
          Numbering:
            – Type: volume
              Value: 62
            – Type: issue
              Value: 2
          Titles:
            – TitleFull: Combustion, Explosion, & Shock Waves
              Type: main
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