LAPSE:2018.0694
Published Article
LAPSE:2018.0694
Combustion Characteristics and NOx Emission through a Swirling Burner with Adjustable Flaring Angle
Yafei Zhang, Rui Luo, Yihua Dou, Qulan Zhou
September 21, 2018
A swirling burner with a variable inner secondary air (ISA) flaring angle β is proposed and a laboratory scale opposed-firing furnace is built. Temperature distribution and NOx emission are designedly measured. The combustion characteristics affected by variable β are experimentally evaluated from ignition and burnout data. Meanwhile, NOx reduction by the variable β is analyzed through emissions measurements. Different inner/outer primary coal-air concentration ratios γ, thermal loads and coal types are considered in this study. Results indicate that β variation provides a new approach to promote ignition and burnout, as well as NOx emission reduction under conditions of fuel rich/lean combustion and load variation. The recommended β of a swirling burner under different conditions is not always constant. The optimal βopt of the swirling burner under all conditions for different burning performance are summarized in the form of curves, which could provide reference for exquisite combustion adjustment.
Keywords
combustion adjustment, flaring angle, fuel rich/lean combustion, low load, swirling burner
Suggested Citation
Zhang Y, Luo R, Dou Y, Zhou Q. Combustion Characteristics and NOx Emission through a Swirling Burner with Adjustable Flaring Angle. (2018). LAPSE:2018.0694
Author Affiliations
Zhang Y: Mechanical Engineering College, Xi’an Shiyou University, Xi’an 710065, China
Luo R: Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710032, China [ORCID]
Dou Y: Mechanical Engineering College, Xi’an Shiyou University, Xi’an 710065, China
Zhou Q: State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
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Journal Name
Energies
Volume
11
Issue
8
Article Number
E2173
Year
2018
Publication Date
2018-08-20
Published Version
ISSN
1996-1073
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PII: en11082173, Publication Type: Journal Article
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LAPSE:2018.0694
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doi:10.3390/en11082173
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Sep 21, 2018
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Sep 21, 2018
 
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Calvin Tsay
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