Numerical investigation on IRZ dimension and optimization of a 0.3MWt swirl oxy-firing flame in high confinements

Jingzhang Liu; Sheng Chen; Zhaohui Liu; Ke Peng; Nan Zhou; Xiaohong Huang; Tai Zhang; Chuguang Zheng

doi:10.1007/978-3-642-30445-3_167

Numerical investigation on IRZ dimension and optimization of a 0.3MWt swirl oxy-firing flame in high confinements

Jingzhang Liu, Sheng Chen, Zhaohui Liu^*, Ke Peng, Nan Zhou, Xiaohong Huang, Tai Zhang, Chuguang Zheng

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In oxy-coal combustion, the Internal Recirculation Zone (IRZ) can effectively improve the flame stability and propagation. Therefore, it is necessary to investigate both the formation of the IRZ and the optimization of the oxy-firing flame in high confinements. The present work investigates the primary four factors which significantly affect the formation of the IRZ and the optimization of the oxy-firing flames. These factors include the V-type flame holder, the secondary stream (SS) swirl number, the recycle ratio, the oxygen pressure fraction in the primary stream (PS). The numerical object is a new swirling oxy-burner for the 0.3MWt pilot-scale facility in HUST. In the procedure of the numerical investigation, the important chemical reaction scheme needs to be considered for oxy-firing flames, including the four-step global reaction mechanism in the Finite-Rate and Eddy-Dissipation (FRED) model and the gasification reactions with H2O and CO2. The conclusions are that these four factors significantly affect the formation of the IRZ and the optimization of a 0.3MWt swirl oxy-firing flame can be obtained in high confinements. Both the pressure fraction of oxygen in PS and the recycle ratio can seriously affect the flame stability and propagtion. The V-type flame hold can significantly affect the maximum recirculation rate (qmr/q m0)max. The maximum IRZ dimension can significantly keep the flame stability and propagation. Correspondingly, the stabilized flame belongs to the Flame type-II.

Original language	English
Title of host publication	ISCC 2011: Cleaner Combustion and Sustainable World
Editors	Qi Haiying, Bo Zhao
Place of Publication	Heidelberg
Publisher	Springer Nature
Chapter	7
Pages	1261-1266
Number of pages	6
Edition	1
ISBN (Electronic)	9783642304453
ISBN (Print)	9783642304446, 9787302285427
DOIs	https://doi.org/10.1007/978-3-642-30445-3_167
Publication status	Published - 18 Aug 2012
Externally published	Yes
Event	7th International Symposium on Coal Combustion: Cleaner Combustion and Sustainable World, ISCC - Harbin, China Duration: 17 Jul 2011 → 21 Jul 2011 Conference number: 92556

Publication series

Name	ISCC: International Symposium on Coal Combustion
Publisher	Springer Berlin, Heidelberg

Conference

Conference	7th International Symposium on Coal Combustion: Cleaner Combustion and Sustainable World, ISCC
Country/Territory	China
City	Harbin
Period	17/07/11 → 21/07/11

Keywords

Flame propagtion
Internal recirculation zone
Swirling flame

ASJC Scopus subject areas

Energy Engineering and Power Technology
Fuel Technology
Renewable Energy, Sustainability and the Environment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Documents and Links

10.1007/978-3-642-30445-3_167

Cite this

Liu, J., Chen, S., Liu, Z., Peng, K., Zhou, N., Huang, X., Zhang, T., & Zheng, C. (2012). Numerical investigation on IRZ dimension and optimization of a 0.3MWt swirl oxy-firing flame in high confinements. In Q. Haiying, & B. Zhao (Eds.), ISCC 2011: Cleaner Combustion and Sustainable World (1 ed., pp. 1261-1266). Article 167 (ISCC: International Symposium on Coal Combustion). Springer Nature. https://doi.org/10.1007/978-3-642-30445-3_167

@inproceedings{8f7bf47b1bfa44b69e501500a1bcbdd7,

title = "Numerical investigation on IRZ dimension and optimization of a 0.3MWt swirl oxy-firing flame in high confinements",

abstract = "In oxy-coal combustion, the Internal Recirculation Zone (IRZ) can effectively improve the flame stability and propagation. Therefore, it is necessary to investigate both the formation of the IRZ and the optimization of the oxy-firing flame in high confinements. The present work investigates the primary four factors which significantly affect the formation of the IRZ and the optimization of the oxy-firing flames. These factors include the V-type flame holder, the secondary stream (SS) swirl number, the recycle ratio, the oxygen pressure fraction in the primary stream (PS). The numerical object is a new swirling oxy-burner for the 0.3MWt pilot-scale facility in HUST. In the procedure of the numerical investigation, the important chemical reaction scheme needs to be considered for oxy-firing flames, including the four-step global reaction mechanism in the Finite-Rate and Eddy-Dissipation (FRED) model and the gasification reactions with H2O and CO2. The conclusions are that these four factors significantly affect the formation of the IRZ and the optimization of a 0.3MWt swirl oxy-firing flame can be obtained in high confinements. Both the pressure fraction of oxygen in PS and the recycle ratio can seriously affect the flame stability and propagtion. The V-type flame hold can significantly affect the maximum recirculation rate (qmr/q m0)max. The maximum IRZ dimension can significantly keep the flame stability and propagation. Correspondingly, the stabilized flame belongs to the Flame type-II.",

keywords = "Flame propagtion, Internal recirculation zone, Swirling flame",

author = "Jingzhang Liu and Sheng Chen and Zhaohui Liu and Ke Peng and Nan Zhou and Xiaohong Huang and Tai Zhang and Chuguang Zheng",

year = "2012",

month = aug,

day = "18",

doi = "10.1007/978-3-642-30445-3_167",

language = "English",

isbn = "9783642304446",

series = "ISCC: International Symposium on Coal Combustion",

publisher = "Springer Nature",

pages = "1261--1266",

editor = "Qi Haiying and Bo Zhao",

booktitle = "ISCC 2011: Cleaner Combustion and Sustainable World",

address = "United States",

edition = "1",

note = "7th International Symposium on Coal Combustion: Cleaner Combustion and Sustainable World, ISCC ; Conference date: 17-07-2011 Through 21-07-2011",

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Liu, J, Chen, S, Liu, Z, Peng, K, Zhou, N, Huang, X, Zhang, T & Zheng, C 2012, Numerical investigation on IRZ dimension and optimization of a 0.3MWt swirl oxy-firing flame in high confinements. in Q Haiying & B Zhao (eds), ISCC 2011: Cleaner Combustion and Sustainable World. 1 edn, 167, ISCC: International Symposium on Coal Combustion, Springer Nature, Heidelberg, pp. 1261-1266, 7th International Symposium on Coal Combustion: Cleaner Combustion and Sustainable World, ISCC, Harbin, China, 17/07/11. https://doi.org/10.1007/978-3-642-30445-3_167

Numerical investigation on IRZ dimension and optimization of a 0.3MWt swirl oxy-firing flame in high confinements. / Liu, Jingzhang; Chen, Sheng; Liu, Zhaohui et al.
ISCC 2011: Cleaner Combustion and Sustainable World. ed. / Qi Haiying; Bo Zhao. 1. ed. Heidelberg: Springer Nature, 2012. p. 1261-1266 167 (ISCC: International Symposium on Coal Combustion).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Numerical investigation on IRZ dimension and optimization of a 0.3MWt swirl oxy-firing flame in high confinements

AU - Liu, Jingzhang

AU - Chen, Sheng

AU - Liu, Zhaohui

AU - Peng, Ke

AU - Zhou, Nan

AU - Huang, Xiaohong

AU - Zhang, Tai

AU - Zheng, Chuguang

N1 - Conference code: 92556

PY - 2012/8/18

Y1 - 2012/8/18

N2 - In oxy-coal combustion, the Internal Recirculation Zone (IRZ) can effectively improve the flame stability and propagation. Therefore, it is necessary to investigate both the formation of the IRZ and the optimization of the oxy-firing flame in high confinements. The present work investigates the primary four factors which significantly affect the formation of the IRZ and the optimization of the oxy-firing flames. These factors include the V-type flame holder, the secondary stream (SS) swirl number, the recycle ratio, the oxygen pressure fraction in the primary stream (PS). The numerical object is a new swirling oxy-burner for the 0.3MWt pilot-scale facility in HUST. In the procedure of the numerical investigation, the important chemical reaction scheme needs to be considered for oxy-firing flames, including the four-step global reaction mechanism in the Finite-Rate and Eddy-Dissipation (FRED) model and the gasification reactions with H2O and CO2. The conclusions are that these four factors significantly affect the formation of the IRZ and the optimization of a 0.3MWt swirl oxy-firing flame can be obtained in high confinements. Both the pressure fraction of oxygen in PS and the recycle ratio can seriously affect the flame stability and propagtion. The V-type flame hold can significantly affect the maximum recirculation rate (qmr/q m0)max. The maximum IRZ dimension can significantly keep the flame stability and propagation. Correspondingly, the stabilized flame belongs to the Flame type-II.

AB - In oxy-coal combustion, the Internal Recirculation Zone (IRZ) can effectively improve the flame stability and propagation. Therefore, it is necessary to investigate both the formation of the IRZ and the optimization of the oxy-firing flame in high confinements. The present work investigates the primary four factors which significantly affect the formation of the IRZ and the optimization of the oxy-firing flames. These factors include the V-type flame holder, the secondary stream (SS) swirl number, the recycle ratio, the oxygen pressure fraction in the primary stream (PS). The numerical object is a new swirling oxy-burner for the 0.3MWt pilot-scale facility in HUST. In the procedure of the numerical investigation, the important chemical reaction scheme needs to be considered for oxy-firing flames, including the four-step global reaction mechanism in the Finite-Rate and Eddy-Dissipation (FRED) model and the gasification reactions with H2O and CO2. The conclusions are that these four factors significantly affect the formation of the IRZ and the optimization of a 0.3MWt swirl oxy-firing flame can be obtained in high confinements. Both the pressure fraction of oxygen in PS and the recycle ratio can seriously affect the flame stability and propagtion. The V-type flame hold can significantly affect the maximum recirculation rate (qmr/q m0)max. The maximum IRZ dimension can significantly keep the flame stability and propagation. Correspondingly, the stabilized flame belongs to the Flame type-II.

KW - Flame propagtion

KW - Internal recirculation zone

KW - Swirling flame

U2 - 10.1007/978-3-642-30445-3_167

DO - 10.1007/978-3-642-30445-3_167

M3 - Conference contribution

SN - 9783642304446

SN - 9787302285427

T3 - ISCC: International Symposium on Coal Combustion

SP - 1261

EP - 1266

BT - ISCC 2011: Cleaner Combustion and Sustainable World

A2 - Haiying, Qi

A2 - Zhao, Bo

PB - Springer Nature

CY - Heidelberg

T2 - 7th International Symposium on Coal Combustion: Cleaner Combustion and Sustainable World, ISCC

Y2 - 17 July 2011 through 21 July 2011

ER -

Liu J, Chen S, Liu Z, Peng K, Zhou N, Huang X et al. Numerical investigation on IRZ dimension and optimization of a 0.3MWt swirl oxy-firing flame in high confinements. In Haiying Q, Zhao B, editors, ISCC 2011: Cleaner Combustion and Sustainable World. 1 ed. Heidelberg: Springer Nature. 2012. p. 1261-1266. 167. (ISCC: International Symposium on Coal Combustion). Epub 2012 Jan 1. doi: 10.1007/978-3-642-30445-3_167

Numerical investigation on IRZ dimension and optimization of a 0.3MWt swirl oxy-firing flame in high confinements

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

UN SDGs

Documents and Links

Fingerprint

Cite this