Effects of Several Chief Parameters on the NOx Emission of a MILD Burner Firing Biogas
[1]Li Xiaomin,Cao Kan,Li Pengkai,et al.Effects of Several Chief Parameters on the NOx Emission of a MILD Burner Firing Biogas[J].Journal of Zhengzhou University (Engineering Science),2021,42(02):106-111.[doi:10.13705/j.issn.1671-6833.2020.06.003]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
42
Number of periods:
2021 02
Page number:
106-111
Column:
Public date:
2021-04-12
- Title:
- Effects of Several Chief Parameters on the NOx Emission of a MILD Burner Firing Biogas
- Keywords:
- biogas; moderate &; intense low oxygen dilution combustion; rich combustion; NOx; distributed energy resources
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2020.06.003
- Abstract:
- An experimental investigation was carried out on a MILD burner firing biogas, which was developed based on the scheme of rich combustion-injection-MILD (moderate & intense low oxygen dilution) combustion. An analysis was conducted to explore effects of primary biogas ratio and heat transfer ratio of rich combustion chamber on NOx emissions of the burner, with thermal input of 100 kW. Results showed that temperature difference in the MILD combustion chamber was less than 200 ℃ and NOx content in its flue gas was in the range of 0.14 and 1.12 mg/m3. When the primary biogas ratio was in the range of 0.3 and 0.4, secondary dilution was indispensable to achieve MILD combustion. However, when the primary biogas ratio was greater than 0.4, MILD combustion could be realized without secondary dilution. Finally, an expression was obtained through binary regression, which could explain influences of the primary biogas ratio and the heat transfer ratio of the rich combustion chamber on NOx emissions to a great degree.
- References:
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2021-05-30