Experimental study on a 200 MW boiler retrofitted with low NOx combustion system

Xiao Hui Zhang; Rui Sun; Shao Zeng Sun; Ming Qin; Guo Zhong Zhuang; Yu Kun Qin

Experimental study on a 200 MW boiler retrofitted with low NO_x combustion system

Xiao Hui Zhang^*
, Rui Sun
, Shao Zeng Sun
, Ming Qin
, Guo Zhong Zhuang
, Yu Kun Qin

^*Corresponding author for this work

School of Energy Science and Engineering, Harbin Institute of Technology
Beijing LongTech Environmental Engineering and Technology Co. Ltd.

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

An experimental investigation to reduce the NO_x emission during burning bituminous coal was carried out on a 670 t/h tangential pulverized coal firing furnace, with a technique combining horizontal bias combustion (HBC) burners in the primary combustion zone and separated over firing air (SOFA) nozzles above the highest secondary air nozzles. The influence mechanisms of this low NO_x combustion system on NO_x/CO emission and unburned carbon in fly ash have been measured and studied in situ. The tests indicate the amount of NO_x emission can be decreased to less than 300 mg/m³ after adopting the reasonable distribution of secondary air, of which the OFA ratio is 30%. The concentration of NO_x is lower than 400 mg/m³ in any case, and the lowest concentration can reach 250.84 mg/m³. Meanwhile, there is little effect on the unburned carbon content in fly ash which varies between 1.5% and 3%.

Original language	English
Pages (from-to)	8-14
Number of pages	7
Journal	Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
Volume	28
Issue number	17
State	Published - 15 Jun 2008
Externally published	Yes

Keywords

Horizontal pulverized coal bias burner
NO emission
Over firing air
Pulverized coal fired boiler
Staging combustion technique
Unburned carbon content in fly ash

Cite this

@article{981ed2e471a14db796b71d58e947cb18,

title = "Experimental study on a 200 MW boiler retrofitted with low NOx combustion system",

abstract = "An experimental investigation to reduce the NOx emission during burning bituminous coal was carried out on a 670 t/h tangential pulverized coal firing furnace, with a technique combining horizontal bias combustion (HBC) burners in the primary combustion zone and separated over firing air (SOFA) nozzles above the highest secondary air nozzles. The influence mechanisms of this low NOx combustion system on NOx/CO emission and unburned carbon in fly ash have been measured and studied in situ. The tests indicate the amount of NOx emission can be decreased to less than 300 mg/m3 after adopting the reasonable distribution of secondary air, of which the OFA ratio is 30\%. The concentration of NOx is lower than 400 mg/m3 in any case, and the lowest concentration can reach 250.84 mg/m3. Meanwhile, there is little effect on the unburned carbon content in fly ash which varies between 1.5\% and 3\%.",

keywords = "Horizontal pulverized coal bias burner, NO emission, Over firing air, Pulverized coal fired boiler, Staging combustion technique, Unburned carbon content in fly ash",

author = "Zhang, \{Xiao Hui\} and Rui Sun and Sun, \{Shao Zeng\} and Ming Qin and Zhuang, \{Guo Zhong\} and Qin, \{Yu Kun\}",

year = "2008",

month = jun,

day = "15",

language = "英语",

volume = "28",

pages = "8--14",

journal = "Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering",

issn = "0258-8013",

publisher = "Chinese Society for Electrical Engineering",

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}

TY - JOUR

T1 - Experimental study on a 200 MW boiler retrofitted with low NOx combustion system

AU - Zhang, Xiao Hui

AU - Sun, Rui

AU - Sun, Shao Zeng

AU - Qin, Ming

AU - Zhuang, Guo Zhong

AU - Qin, Yu Kun

PY - 2008/6/15

Y1 - 2008/6/15

N2 - An experimental investigation to reduce the NOx emission during burning bituminous coal was carried out on a 670 t/h tangential pulverized coal firing furnace, with a technique combining horizontal bias combustion (HBC) burners in the primary combustion zone and separated over firing air (SOFA) nozzles above the highest secondary air nozzles. The influence mechanisms of this low NOx combustion system on NOx/CO emission and unburned carbon in fly ash have been measured and studied in situ. The tests indicate the amount of NOx emission can be decreased to less than 300 mg/m3 after adopting the reasonable distribution of secondary air, of which the OFA ratio is 30%. The concentration of NOx is lower than 400 mg/m3 in any case, and the lowest concentration can reach 250.84 mg/m3. Meanwhile, there is little effect on the unburned carbon content in fly ash which varies between 1.5% and 3%.

AB - An experimental investigation to reduce the NOx emission during burning bituminous coal was carried out on a 670 t/h tangential pulverized coal firing furnace, with a technique combining horizontal bias combustion (HBC) burners in the primary combustion zone and separated over firing air (SOFA) nozzles above the highest secondary air nozzles. The influence mechanisms of this low NOx combustion system on NOx/CO emission and unburned carbon in fly ash have been measured and studied in situ. The tests indicate the amount of NOx emission can be decreased to less than 300 mg/m3 after adopting the reasonable distribution of secondary air, of which the OFA ratio is 30%. The concentration of NOx is lower than 400 mg/m3 in any case, and the lowest concentration can reach 250.84 mg/m3. Meanwhile, there is little effect on the unburned carbon content in fly ash which varies between 1.5% and 3%.

KW - Horizontal pulverized coal bias burner

KW - NO emission

KW - Over firing air

KW - Pulverized coal fired boiler

KW - Staging combustion technique

KW - Unburned carbon content in fly ash

UR - https://www.scopus.com/pages/publications/46449112366

M3 - 文章

AN - SCOPUS:46449112366

SN - 0258-8013

VL - 28

SP - 8

EP - 14

JO - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering

JF - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering

IS - 17

ER -

Experimental study on a 200 MW boiler retrofitted with low NO_x combustion system

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Keywords

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