Experimental study of the characteristics of a novel swirl burner for combustion of low rank pulverized coal

Rui Sun; Yajue Wu; Zhengqi Li; Shaohua Wu; Shaozeng Sun

Experimental study of the characteristics of a novel swirl burner for combustion of low rank pulverized coal

Rui Sun
, Yajue Wu
, Zhengqi Li
, Shaohua Wu
, Shaozeng Sun

School of Energy Science and Engineering, Harbin Institute of Technology
University of Sheffield

Research output: Contribution to conference › Paper › peer-review

Abstract

The effect of swirl blade axial angles on isothermal turbulent swirl jet, issuing from a Radial Bias Combustion (RBC) swirl burner, was studied. A hot film anemometer with rotating single-wire probe method was used to measure the velocity components and normal stresses. The results showed that at high vane angles to the axis, velocity peak moved radially outward, and a larger Internal Recirculation Zone (IRZ) was formed. Measured turbulent normal stresses showed strong isotropy and heterogeneity in swirl flow, and the peak of normal stresses emerged at the boundary between IRZ and mean stream. Hot tests of RBC burner showed that gas temperature in IRZ increased to 1000°C within a short distance downstream burner nozzle and flame stability was improved greatly. The boiler operated smoothly at 52% ECR capacity for a long time without the auxiliary oil. Low NOx emission (568mg/m³ , O₂=6%) at furnace exit was obtained.

Original language	English
Pages	125-128
Number of pages	4
State	Published - 2005
Externally published	Yes
Event	5th Asia-Pacific Conference on Combustion, ASPACC 2005 - Adelaide, SA, Australia Duration: 17 Jul 2005 → 20 Jul 2005

Conference

Conference	5th Asia-Pacific Conference on Combustion, ASPACC 2005
Country/Territory	Australia
City	Adelaide, SA
Period	17/07/05 → 20/07/05

Cite this

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title = "Experimental study of the characteristics of a novel swirl burner for combustion of low rank pulverized coal",

abstract = "The effect of swirl blade axial angles on isothermal turbulent swirl jet, issuing from a Radial Bias Combustion (RBC) swirl burner, was studied. A hot film anemometer with rotating single-wire probe method was used to measure the velocity components and normal stresses. The results showed that at high vane angles to the axis, velocity peak moved radially outward, and a larger Internal Recirculation Zone (IRZ) was formed. Measured turbulent normal stresses showed strong isotropy and heterogeneity in swirl flow, and the peak of normal stresses emerged at the boundary between IRZ and mean stream. Hot tests of RBC burner showed that gas temperature in IRZ increased to 1000°C within a short distance downstream burner nozzle and flame stability was improved greatly. The boiler operated smoothly at 52\% ECR capacity for a long time without the auxiliary oil. Low NOx emission (568mg/m3 , O2=6\%) at furnace exit was obtained.",

author = "Rui Sun and Yajue Wu and Zhengqi Li and Shaohua Wu and Shaozeng Sun",

year = "2005",

language = "英语",

pages = "125--128",

note = "5th Asia-Pacific Conference on Combustion, ASPACC 2005 ; Conference date: 17-07-2005 Through 20-07-2005",

}

TY - CONF

T1 - Experimental study of the characteristics of a novel swirl burner for combustion of low rank pulverized coal

AU - Sun, Rui

AU - Wu, Yajue

AU - Li, Zhengqi

AU - Wu, Shaohua

AU - Sun, Shaozeng

PY - 2005

Y1 - 2005

N2 - The effect of swirl blade axial angles on isothermal turbulent swirl jet, issuing from a Radial Bias Combustion (RBC) swirl burner, was studied. A hot film anemometer with rotating single-wire probe method was used to measure the velocity components and normal stresses. The results showed that at high vane angles to the axis, velocity peak moved radially outward, and a larger Internal Recirculation Zone (IRZ) was formed. Measured turbulent normal stresses showed strong isotropy and heterogeneity in swirl flow, and the peak of normal stresses emerged at the boundary between IRZ and mean stream. Hot tests of RBC burner showed that gas temperature in IRZ increased to 1000°C within a short distance downstream burner nozzle and flame stability was improved greatly. The boiler operated smoothly at 52% ECR capacity for a long time without the auxiliary oil. Low NOx emission (568mg/m3 , O2=6%) at furnace exit was obtained.

AB - The effect of swirl blade axial angles on isothermal turbulent swirl jet, issuing from a Radial Bias Combustion (RBC) swirl burner, was studied. A hot film anemometer with rotating single-wire probe method was used to measure the velocity components and normal stresses. The results showed that at high vane angles to the axis, velocity peak moved radially outward, and a larger Internal Recirculation Zone (IRZ) was formed. Measured turbulent normal stresses showed strong isotropy and heterogeneity in swirl flow, and the peak of normal stresses emerged at the boundary between IRZ and mean stream. Hot tests of RBC burner showed that gas temperature in IRZ increased to 1000°C within a short distance downstream burner nozzle and flame stability was improved greatly. The boiler operated smoothly at 52% ECR capacity for a long time without the auxiliary oil. Low NOx emission (568mg/m3 , O2=6%) at furnace exit was obtained.

UR - https://www.scopus.com/pages/publications/84878964205

M3 - 论文

AN - SCOPUS:84878964205

SP - 125

EP - 128

T2 - 5th Asia-Pacific Conference on Combustion, ASPACC 2005

Y2 - 17 July 2005 through 20 July 2005

ER -

Experimental study of the characteristics of a novel swirl burner for combustion of low rank pulverized coal

Abstract

Conference

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