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堆积尺寸与颗粒大小对玉米秸秆自加热特性影响的试验研究.

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Title: 堆积尺寸与颗粒大小对玉米秸秆自加热特性影响的试验研究.
Alternate Title: Experimental investigation on effect of stacking scale and particle size on self-heating characteristics of corn stalk.
Authors: 韩磊1 865055284@qq.com, 闫泓池2, 周福1, 陈鑫科2, 彭志福1, 马仑3, 马启磊1, 方庆艳2 qyfang@mail.hust.edu.cn
Source: Clean Coal Technology. Mar2026, Vol. 32 Issue 3, p216-224. 9p.
Subject Terms: *Cornstalks, *Particle size determination, *Thermal insulation, *Spontaneous combustion, *Microbiological chemistry, *Biomass chemicals
Abstract (English): Straw biomass, regarded as a promising low-carbon alternative to coal for power generation, is susceptible to self-heating during storage, a process that may lead to spontaneous combustion and pose fire risks. In addition to moisture content, both the scale of the straw pile and the particle size of the material significantly influence its self-heating behavior. To investigate these effects, this study designed and implemented experimental setups using a 3 L foam canister and a 120 L foam container to examine the self-heating characteristics of corn straw. Two forms of straw samples were tested: powdery particles with a diameter of 2 mm and raw stalk-like pieces measuring 10-15 cm in length. Their self-heating behavior was monitored and compared with that observed in a 3 L Dewar flask. The results showed that the 120 L foam container, lined with insulating cotton, exhibited the least temperature loss and the best thermal insulation performance. The scale of biomass accumulation substantially influenced self-heating characteristics, with larger piles showing more pronounced temperature increases due to enhanced microbial activity. Both powdery and stalk-like samples displayed stronger self-heating effects in the larger insulated container, as reflected in the rate of temperature rise, peak temperature, and stabilized cooling temperature, thereby enabling more effective observation and analysis of the self-heating process. Particle size also played a critical role; larger particles corresponded to weaker self-heating effects. Compared with powdery samples, stalk-like samples characterized by lower specific surface area and higher porosity reached lower peak temperatures. However, their temperature declined more slowly over the detection period, resulting in higher final stable temperatures. [ABSTRACT FROM AUTHOR]
Abstract (Chinese): 秸秆生物质是燃煤电厂重要的低碳替代燃料之一, 在储存过程中存在自加热现象, 可引发自燃甚至火灾事故。除水分之外, 堆积尺寸与颗粒大小对其自加热特性也有重要影响。设计搭建了 3L 泡沫罐和 120L 泡沫箱作为生物质自加热试验装置, 以粒径为 2mm 的粉末状和长度 10~15cm 的原始杆状玉米秸秆样品为试验对象, 开展了自加热特性试验, 并与 3L 杜瓦罐的试验进行了对比分析。结果表明: 容积更大的 120L 泡沫箱加装保温棉装置温度下降幅度最小, 保温性能最好。生物质堆积尺寸对自加热特性有明显影响, 堆积尺寸越大, 其源于微生物活动引发的自加热效应越显著; 无论是粉状还是杆状玉米秸秆样品, 从温度上升速率、峰值温度, 以及下降平稳温度方面而言, 容积更大的 120L 泡沫箱加装保温棉装置试验中的自加热效应都更加显著, 更有利于监测分析玉米秸秆的自加热现象。生物质颗粒大小对自加热特性也有明显影响, 颗粒增大, 自加热效应减弱。相比于玉米秸秆的粉状样品, 杆状样品由于更小的表面积和更大的孔隙率, 自加热峰值温度较低, 但其在检测期内的温度下降趋势更平缓, 稳定温度更高。 [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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DbLabel: Energy & Power Source
An: 193038316
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  Label: Title
  Group: Ti
  Data: 堆积尺寸与颗粒大小对玉米秸秆自加热特性影响的试验研究.
– Name: TitleAlt
  Label: Alternate Title
  Group: TiAlt
  Data: Experimental investigation on effect of stacking scale and particle size on self-heating characteristics of corn stalk.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22韩磊%22">韩磊</searchLink><relatesTo>1</relatesTo><i> 865055284@qq.com</i><br /><searchLink fieldCode="AR" term="%22闫泓池%22">闫泓池</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22周福%22">周福</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22陈鑫科%22">陈鑫科</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22彭志福%22">彭志福</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22马仑%22">马仑</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22马启磊%22">马启磊</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22方庆艳%22">方庆艳</searchLink><relatesTo>2</relatesTo><i> qyfang@mail.hust.edu.cn</i>
– Name: TitleSource
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  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Clean+Coal+Technology%22">Clean Coal Technology</searchLink>. Mar2026, Vol. 32 Issue 3, p216-224. 9p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Cornstalks%22">Cornstalks</searchLink><br />*<searchLink fieldCode="DE" term="%22Particle+size+determination%22">Particle size determination</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermal+insulation%22">Thermal insulation</searchLink><br />*<searchLink fieldCode="DE" term="%22Spontaneous+combustion%22">Spontaneous combustion</searchLink><br />*<searchLink fieldCode="DE" term="%22Microbiological+chemistry%22">Microbiological chemistry</searchLink><br />*<searchLink fieldCode="DE" term="%22Biomass+chemicals%22">Biomass chemicals</searchLink>
– Name: Abstract
  Label: Abstract (English)
  Group: Ab
  Data: Straw biomass, regarded as a promising low-carbon alternative to coal for power generation, is susceptible to self-heating during storage, a process that may lead to spontaneous combustion and pose fire risks. In addition to moisture content, both the scale of the straw pile and the particle size of the material significantly influence its self-heating behavior. To investigate these effects, this study designed and implemented experimental setups using a 3 L foam canister and a 120 L foam container to examine the self-heating characteristics of corn straw. Two forms of straw samples were tested: powdery particles with a diameter of 2 mm and raw stalk-like pieces measuring 10-15 cm in length. Their self-heating behavior was monitored and compared with that observed in a 3 L Dewar flask. The results showed that the 120 L foam container, lined with insulating cotton, exhibited the least temperature loss and the best thermal insulation performance. The scale of biomass accumulation substantially influenced self-heating characteristics, with larger piles showing more pronounced temperature increases due to enhanced microbial activity. Both powdery and stalk-like samples displayed stronger self-heating effects in the larger insulated container, as reflected in the rate of temperature rise, peak temperature, and stabilized cooling temperature, thereby enabling more effective observation and analysis of the self-heating process. Particle size also played a critical role; larger particles corresponded to weaker self-heating effects. Compared with powdery samples, stalk-like samples characterized by lower specific surface area and higher porosity reached lower peak temperatures. However, their temperature declined more slowly over the detection period, resulting in higher final stable temperatures. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (Chinese)
  Group: Ab
  Data: 秸秆生物质是燃煤电厂重要的低碳替代燃料之一, 在储存过程中存在自加热现象, 可引发自燃甚至火灾事故。除水分之外, 堆积尺寸与颗粒大小对其自加热特性也有重要影响。设计搭建了 3L 泡沫罐和 120L 泡沫箱作为生物质自加热试验装置, 以粒径为 2mm 的粉末状和长度 10~15cm 的原始杆状玉米秸秆样品为试验对象, 开展了自加热特性试验, 并与 3L 杜瓦罐的试验进行了对比分析。结果表明: 容积更大的 120L 泡沫箱加装保温棉装置温度下降幅度最小, 保温性能最好。生物质堆积尺寸对自加热特性有明显影响, 堆积尺寸越大, 其源于微生物活动引发的自加热效应越显著; 无论是粉状还是杆状玉米秸秆样品, 从温度上升速率、峰值温度, 以及下降平稳温度方面而言, 容积更大的 120L 泡沫箱加装保温棉装置试验中的自加热效应都更加显著, 更有利于监测分析玉米秸秆的自加热现象。生物质颗粒大小对自加热特性也有明显影响, 颗粒增大, 自加热效应减弱。相比于玉米秸秆的粉状样品, 杆状样品由于更小的表面积和更大的孔隙率, 自加热峰值温度较低, 但其在检测期内的温度下降趋势更平缓, 稳定温度更高。 [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=193038316
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.13226/j.issn.1006-6772.24032501
    Languages:
      – Code: chi
        Text: Chinese
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      Pagination:
        PageCount: 9
        StartPage: 216
    Subjects:
      – SubjectFull: Cornstalks
        Type: general
      – SubjectFull: Particle size determination
        Type: general
      – SubjectFull: Thermal insulation
        Type: general
      – SubjectFull: Spontaneous combustion
        Type: general
      – SubjectFull: Microbiological chemistry
        Type: general
      – SubjectFull: Biomass chemicals
        Type: general
    Titles:
      – TitleFull: 堆积尺寸与颗粒大小对玉米秸秆自加热特性影响的试验研究.
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            NameFull: 韩磊
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            NameFull: 闫泓池
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            NameFull: 周福
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            NameFull: 彭志福
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            NameFull: 方庆艳
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            – D: 01
              M: 03
              Text: Mar2026
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              Y: 2026
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