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Study on flow characteristic and structure of pulverized coal burner with surrounding air
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Xueze ZHANG1, Weiwei ZHANG1, Donghui YUAN2, Xu REN1, Lin MA1, Xiaoyan YANG3
Thermal Power Generation | 2023, 52(4) : 151 - 158
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Thermal Power Generation | 2023, 52(4): 151-158
• Power generation technology forum •
Study on flow characteristic and structure of pulverized coal burner with surrounding air
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Xueze ZHANG1, Weiwei ZHANG1, Donghui YUAN2, Xu REN1, Lin MA1, Xiaoyan YANG3
Affiliations
  • 1.School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
  • 2.Inner Mongolia Electric Power (Group) Co. Ltd. Inner Mongolia Electric Power Research Institute Branch, Hohhot 010020, China
  • 3.Inner Mongolia Institute of Metrology and Testing, Hohhot 010030, China
Published: 2023-04-25 doi: 10.19666/j.rlfd.202207145
Outline
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To realize stable combustion and refined combustion adjustment of boilers and to gain an in-depth understanding of the jet characteristics of direct flow pulverized coal burners, by taking the pulverized coal burner with surrounding air and its horizontal branch of the secondary air of a quadrangular tangentially pulverized coal boiler as research objects, the effects of throttle column height, secondary air door opening, and wind baffle angle on airflow characteristics are analyzed by numerical simulation under thermal condition. The calculation results show that, for the pulverized coal burner with a small nozzle area of the surrounding air and a thicker horizontal branch of secondary air, adding a throttle column at the position of a secondary air door can effectively improve the uniformity of velocity distribution of the nozzle area of the surrounding air. The opening degree of the secondary air door poses no noticeable effect on the airflow velocity distribution near the nozzle area of the surrounding air, and adding a wind baffle at the burner nozzle can improve the rigidity of primary air and the protection of surrounding air to primary air.

tangential combustion  /  direct flow pulverized coal burner  /  surrounding air  /  primary air  /  refined combustion adjustment
Xueze ZHANG, Weiwei ZHANG, Donghui YUAN, Xu REN, Lin MA, Xiaoyan YANG. Study on flow characteristic and structure of pulverized coal burner with surrounding air[J]. Thermal Power Generation, 2023 , 52 (4) : 151 -158 . DOI: 10.19666/j.rlfd.202207145
Funding
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  • Inner Mongolia Science and Technology Major Special Project(2021ZD0030)
  • Project of Inner Mongolia Electric Power Research Institute(510241210023)
  • 2022 College Students' Science and Technology Innovation Fund Project of Inner Mongolia University of Technology(2022)
Appendix
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Year 2023 volume 52 Issue 4
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Article Info
doi: 10.19666/j.rlfd.202207145
  • Receive Date：2022-07-03
  • Online Date：2026-01-23
  • Published：2023-04-25
Article Data
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History
  • Received：2022-07-03
Funding
Inner Mongolia Science and Technology Major Special Project(2021ZD0030)
Project of Inner Mongolia Electric Power Research Institute(510241210023)
2022 College Students' Science and Technology Innovation Fund Project of Inner Mongolia University of Technology(2022)
Affiliations
    1.School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
    2.Inner Mongolia Electric Power (Group) Co. Ltd. Inner Mongolia Electric Power Research Institute Branch, Hohhot 010020, China
    3.Inner Mongolia Institute of Metrology and Testing, Hohhot 010030, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202207145
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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