Numerical Simulation of Oxy-coal Combustion for a Swirl Burner with EDC Model

崔凯; 刘冰; 吴玉新; 杨海瑞; 吕俊复; 张海

doi:10.1016/S1004-9541(14)60032-X

Your Location：

Home >

Browse articles >

Numerical Simulation of Oxy-coal Combustion for a Swirl Burner with EDC Model

能源、资源与环境技术 | Updated：2026-01-06

- Numerical Simulation of Oxy-coal Combustion for a Swirl Burner with EDC Model
- Numerical Simulation of Oxy-coal Combustion for a Swirl Burner with EDC Model
- 中国化学工程学报（英文版） 2014年22卷第2期页码：193-2011004-9541
- Affiliations：
  
  Key Laboratory for Thermal Science and Power Engineering of Ministry Education, Department of Thermal Engi-neering, Tsinghua University,Beijing,China,100084
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(14)60032-X
  中图分类号：
- 纸质出版：2014
- Accepted：
Scan QR Code
崔凯, 刘冰, 吴玉新, 等. Numerical Simulation of Oxy-coal Combustion for a Swirl Burner with EDC Model[J]. 中国化学工程学报（英文版）, 2014,22(2):193-2011004-9541.

CUI Kai, LIU Bing, WU Yuxin, YANG Hairui, LÜ Junfu, ZHANG Hai. Numerical Simulation of Oxy-coal Combustion for a Swirl Burner with EDC Model[J]. Chin.J.Chem.Eng., 2014, 22(2): 193-201.
崔凯, 刘冰, 吴玉新, 等. Numerical Simulation of Oxy-coal Combustion for a Swirl Burner with EDC Model[J]. 中国化学工程学报（英文版）, 2014,22(2):193-2011004-9541. DOI： 10.1016/S1004-9541(14)60032-X.

CUI Kai, LIU Bing, WU Yuxin, YANG Hairui, LÜ Junfu, ZHANG Hai. Numerical Simulation of Oxy-coal Combustion for a Swirl Burner with EDC Model[J]. Chin.J.Chem.Eng., 2014, 22(2): 193-201. DOI： 10.1016/S1004-9541(14)60032-X.

摘要

Abstract

The characteristics of oxy-coal combustion for a swirl burner with a specially designed preheating chamber are studied numerically. In order to increase the accuracy in the prediction of flame temperature and ignition position

eddy dissipation concept (EDC) model with a skeletal chemical reaction mechanism was adopted to describe the combustion of volatile matter. Simulation was conducted under six oxidant stream conditions with different O

/CO

molar ratios: 21/79/0

30/70/0

50/50/0

21/0/79

30/0/70 and 50/0/50. Results showed that O

enrichment in the primary oxidant stream is in favor of combustion stabilization

acceleration of ignition and increase of maximum flame temperature

while the full substitution of N

by CO

in the oxidant stream delays ignition and decreases the maximum flame temperature. However

the overall flow field and flame shapes in these cases are very similar at the same flow rate of the primary oxidant stream. Combustion characteristics of the air-coal is similar to that of the oxy-coal with 30% O

and 70% CO

in the oxidant stream

indicating that the rear condition is suitable for retrofitting an air-coal fired boiler to an oxy-coal one.

The swirl burner with a specially designed preheating chamber can increase flame temperature

accelerate ignition and enhance burning intensity of pulverized coal under oxy-coal combustion. Also

qualitative experimental validation indicated the burner can reduce the overall NO

emission under certain O

enrichment and oxy-coal combustion conditions against the air-coal combustion.

关键词

Keywords

references

浏览量

116

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

Thermodynamic properties and reaction mechanism of coal reductive decomposition phosphogypsum to prepare CaO and SO2

Preparation and characterization of high performance super activated carbon based on coupled coal/sargassum precursors

Thermogravimetric characteristics of corn straw and bituminous coal copyrolysis based the ilmenite oxygen carriers

Optimization of decoupling combustion characteristics of coal briquettes and biomass pellets in household stoves

Insights into the adsorption performance and mechanism of Cr(VI) onto porous nanocomposite prepared from gossans and modified coal interface: Steric, energetic, and thermodynamic parameters interpretations