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一种空气分级部分预混低氮旋流燃烧器的排放性能研究.

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Title: 一种空气分级部分预混低氮旋流燃烧器的排放性能研究.
Alternate Title: Study on emission performance of an air-staged partial premix low NOx swirl burner.
Authors: 王伟1 2356378022@qq.com, 范育新1 fanyuxin@nuaa.edu.cn, 李省豫2
Source: Clean Coal Technology. 2025 Supplement, Vol. 31, p455-464. 10p.
Subject Terms: *Emission control, *Combustion engineering, *Flame, *Flame stability, *Abatement (Atmospheric chemistry)
Abstract (English): Nitrogen oxides (NOx) is one of the main air pollutants that cause photochemical smog and ozone layer destruction. With the increasingly strict emission requirements of pollutants, more and more low NOx combustion technologies are used in industrial combustion equipment. Based on the principle of partial premixing and internal flue recirculation technology to reduce NOx emission, an air-staged partial premixing low NOx swirl burner was developed. The effects of air supply flow rate and classification scheme on flame characteristics and emission performance are studied through experiments and numerical simulation. The results show that the air-staged partial premixed low NOx swirl burner complied with low nitrogen emission requirement. The combustion flow field consists of two pairs of recirculation zones, the short blue flame is maintained in the head area of the combustion chamber, which inhibits the generation of thermal NOx. It is found that the flame characteristics and NOx emission are greatly affected by the fuel premixing and internal flue gas recirculation. With the increase of the tertiary air, the effect of gas recirculation in the combustion chamber is enhanced, the scope of the central recirculation zone is gradually increased, the flame length is shortened, and the temperature and NOx emission is reduced. Under the condition of 0.71 global equivalent ratio, NOx emission is about 55 mg/m³(3.5%O2). The pre-mixing of primary/secondary air and fuel has great influence on combustion stability and emission performance. When the proportion of secondary air in the secondary and tertiary air supply increases, the premixing effect is enhanced, and the combustion stability decreases with the reduction of NOx emission. When the proportion of secondary air is 65%, the NOx emission in the combustion process is reduced by about 27% compared with 41%. Under the condition of sufficient primary/secondary air supply and global equivalent ratio of 0.61, the NOx emission can be as low as 21 mg/m³(3.5%O2). [ABSTRACT FROM AUTHOR]
Abstract (Chinese): 氮氧化物 (NOx) 是造成光化学烟雾和臭氧层破坏的主要空气污染物之一, 随着污染物排放要求越发严格, 越来越多的低氮燃烧技术被运用到工业燃烧设备中。基于部分预混和烟气内循环技术降低氮氧化物排放的原理, 提出一种分级进气部分预混低氮旋流燃烧器, 通过试验与数值模拟研究了供气流量与分级方案对其燃烧特性与排放性能的影响。结果表明: 分级进气部分预混低氮旋流燃烧器具有良好的低氮排放效果, 燃烧流场由 2 对回流区组成, 淡蓝色的燃烧火焰维持在燃烧室头部区域, 高温火焰范围小, 抑制了热力型 NOx生成。研究发现, 燃料与空气的提前预混和内部烟气再循环效果对燃烧火焰特性和 NOx排放有较大影响。随着外围三次空气的增加, 使得燃烧室内部烟气再循环效果增强, 中心回流区范围逐步增大, 燃烧室温度降低, 火焰长度缩短, NOx排放降低, 在 0.71 的全局当量比条件下, NOx排放量约为 55 mg/ m³(3.5% O2);一/二次空气与燃料的预先掺混对燃烧稳定性和排放性能有较大影响, 当二次空气在二、三次空气供应量的占比增加时, 燃料与空气的掺混效果增强, NOx排放降低的同时燃烧稳定性降低, 二次空气占比为 65% 相比 41% 时燃烧过程中的 NOx排放量降低约 27% ;在一/二次空气供应充足, 全局当量比为 0.61 的条件下, 燃烧过程排放的 NOx质量浓度可低至 21 mg/ m ³(3.5% O 2)。 [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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DbLabel: Energy & Power Source
An: 191821418
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  Label: Title
  Group: Ti
  Data: 一种空气分级部分预混低氮旋流燃烧器的排放性能研究.
– Name: TitleAlt
  Label: Alternate Title
  Group: TiAlt
  Data: Study on emission performance of an air-staged partial premix low NOx swirl burner.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22王伟%22">王伟</searchLink><relatesTo>1</relatesTo><i> 2356378022@qq.com</i><br /><searchLink fieldCode="AR" term="%22范育新%22">范育新</searchLink><relatesTo>1</relatesTo><i> fanyuxin@nuaa.edu.cn</i><br /><searchLink fieldCode="AR" term="%22李省豫%22">李省豫</searchLink><relatesTo>2</relatesTo>
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  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Clean+Coal+Technology%22">Clean Coal Technology</searchLink>. 2025 Supplement, Vol. 31, p455-464. 10p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Emission+control%22">Emission control</searchLink><br />*<searchLink fieldCode="DE" term="%22Combustion+engineering%22">Combustion engineering</searchLink><br />*<searchLink fieldCode="DE" term="%22Flame%22">Flame</searchLink><br />*<searchLink fieldCode="DE" term="%22Flame+stability%22">Flame stability</searchLink><br />*<searchLink fieldCode="DE" term="%22Abatement+%28Atmospheric+chemistry%29%22">Abatement (Atmospheric chemistry)</searchLink>
– Name: Abstract
  Label: Abstract (English)
  Group: Ab
  Data: Nitrogen oxides (NOx) is one of the main air pollutants that cause photochemical smog and ozone layer destruction. With the increasingly strict emission requirements of pollutants, more and more low NOx combustion technologies are used in industrial combustion equipment. Based on the principle of partial premixing and internal flue recirculation technology to reduce NOx emission, an air-staged partial premixing low NOx swirl burner was developed. The effects of air supply flow rate and classification scheme on flame characteristics and emission performance are studied through experiments and numerical simulation. The results show that the air-staged partial premixed low NOx swirl burner complied with low nitrogen emission requirement. The combustion flow field consists of two pairs of recirculation zones, the short blue flame is maintained in the head area of the combustion chamber, which inhibits the generation of thermal NOx. It is found that the flame characteristics and NOx emission are greatly affected by the fuel premixing and internal flue gas recirculation. With the increase of the tertiary air, the effect of gas recirculation in the combustion chamber is enhanced, the scope of the central recirculation zone is gradually increased, the flame length is shortened, and the temperature and NOx emission is reduced. Under the condition of 0.71 global equivalent ratio, NOx emission is about 55 mg/m³(3.5%O2). The pre-mixing of primary/secondary air and fuel has great influence on combustion stability and emission performance. When the proportion of secondary air in the secondary and tertiary air supply increases, the premixing effect is enhanced, and the combustion stability decreases with the reduction of NOx emission. When the proportion of secondary air is 65%, the NOx emission in the combustion process is reduced by about 27% compared with 41%. Under the condition of sufficient primary/secondary air supply and global equivalent ratio of 0.61, the NOx emission can be as low as 21 mg/m³(3.5%O2). [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (Chinese)
  Group: Ab
  Data: 氮氧化物 (NOx) 是造成光化学烟雾和臭氧层破坏的主要空气污染物之一, 随着污染物排放要求越发严格, 越来越多的低氮燃烧技术被运用到工业燃烧设备中。基于部分预混和烟气内循环技术降低氮氧化物排放的原理, 提出一种分级进气部分预混低氮旋流燃烧器, 通过试验与数值模拟研究了供气流量与分级方案对其燃烧特性与排放性能的影响。结果表明: 分级进气部分预混低氮旋流燃烧器具有良好的低氮排放效果, 燃烧流场由 2 对回流区组成, 淡蓝色的燃烧火焰维持在燃烧室头部区域, 高温火焰范围小, 抑制了热力型 NOx生成。研究发现, 燃料与空气的提前预混和内部烟气再循环效果对燃烧火焰特性和 NOx排放有较大影响。随着外围三次空气的增加, 使得燃烧室内部烟气再循环效果增强, 中心回流区范围逐步增大, 燃烧室温度降低, 火焰长度缩短, NOx排放降低, 在 0.71 的全局当量比条件下, NOx排放量约为 55 mg/ m³(3.5% O2);一/二次空气与燃料的预先掺混对燃烧稳定性和排放性能有较大影响, 当二次空气在二、三次空气供应量的占比增加时, 燃料与空气的掺混效果增强, NOx排放降低的同时燃烧稳定性降低, 二次空气占比为 65% 相比 41% 时燃烧过程中的 NOx排放量降低约 27% ;在一/二次空气供应充足, 全局当量比为 0.61 的条件下, 燃烧过程排放的 NOx质量浓度可低至 21 mg/ m ³(3.5% O 2)。 [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.13226/j.issn.1006-6772.24111304
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      – Code: chi
        Text: Chinese
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 455
    Subjects:
      – SubjectFull: Emission control
        Type: general
      – SubjectFull: Combustion engineering
        Type: general
      – SubjectFull: Flame
        Type: general
      – SubjectFull: Flame stability
        Type: general
      – SubjectFull: Abatement (Atmospheric chemistry)
        Type: general
    Titles:
      – TitleFull: 一种空气分级部分预混低氮旋流燃烧器的排放性能研究.
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            NameFull: 王伟
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            NameFull: 范育新
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            NameFull: 李省豫
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            – D: 02
              M: 12
              Text: 2025 Supplement
              Type: published
              Y: 2025
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              Value: 31
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            – TitleFull: Clean Coal Technology
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