Effect of hydrogen addition on flame stability and structure for low heating value coaxial nonpremixed flames

被引：10

作者：

Shin, Cheolhee ^{[1
]}

Nam, Hyeon Taek ^{[2
]}

Lee, Seungro ^{[2
]}

机构：

[1] Univ Waterloo, Dept Mech & Mechatron Engn, Waterloo, ON, Canada

[2] Jeonbuk Natl Univ, Dept Mech Engn, Jeonju 54896, Jeollabuk Do, South Korea

来源：

COMBUSTION SCIENCE AND TECHNOLOGY | 2023年 / 195卷 / 12期

关键词：

Low heating value gas; coaxial flow; non-premixed flames; flame stability limit; flame structure; hydrogen addition; COMBUSTION CHARACTERISTICS; DIFFUSION FLAMES; JET FLAMES; SOOT FORMATION; AIR; PREDICTION; LIMITS; GAS; ENRICHMENT; BLOWOUT;

D O I：

10.1080/00102202.2022.2048377

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

An investigation of effect of hydrogen addition on flame stability and structure i.e. combustion characteristics of low heating value gases (LHVGs) that consist of methane, propane, nitrogen is carried out experimentally and numerically. For the experiment, a coaxial non-premixed jet-type combustor and Planar Laser Induced Fluorescence (PLIF) system are used to evaluate the flame stability limit and flame shapes and visualize OH radical distribution, respectively. For the numerical analysis of hydrogen added LHVGs, the calculation using the FLUENT software with decreased GRI 3.0 mechanism is performed to study the 2D flame temperature distribution and radial flame structure. As a result, the flame length of LHVGs reduces as hydrogen is added. CH* and OH* radicals visualized by chemiluminescence system are distributed closer to the nozzle as hydrogen is added to LHVGs. OH-PLIF images show that OH intensity of LHVG 6000 is higher with hydrogen addition. The flame stability of LHVGs is improved with hydrogen addition. As for the numerical result, the reduction of flame length and width of LHVG 6000 are predicted with adding the hydrogen.

引用

页码：2933 / 2951

页数：19

共 41 条

[1] Mapping the stability of free-jet biogas fl ames under partially premixed combustion [J].

Abdallah, Muhammed S. ;

Mansour, Mohy S. ;

Allam, Nageh K. .

ENERGY, 2021, 220

[2] A Three-step Global Kinetic Mechanism for Predicting Extinction Strain Rate of Syngas-air Nonpremixed Flames [J].

Ali, S. M. ;

Varunkumar, S. .

COMBUSTION SCIENCE AND TECHNOLOGY, 2022, 194 (10) :2101-2124

[3] Effect of burner diameter and diluents on the extinction strain rate of syngas-air non-premixed Tsuji-type flames [J].

Ali, S. M. ;

Varunkumar, S. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2020, 45 (15) :9113-9127

[4]

Alternative fuels data center, 2018, US DEP EN VEH TECHN

[5] Regional prediction of long-term landfill gas to energy potential [J].

Amini, Hamid R. ;

Reinhart, Debra R. .

WASTE MANAGEMENT, 2011, 31 (9-10) :2020-2026

[6]

ANSYS® Fluent, 2015, REL 16 2

[7] Effect of hydrogen addition on the combustion characteristics of premixed biogas/hydrogen-air mixtures [J].

Benaissa, Sabrina ;

Adouane, Belkacem ;

Ali, S. M. ;

Mohammad, Akram .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2021, 46 (35) :18661-18677

[8]

Castrup H., 2004, 8 ANN ITEA INSTR WOR

[9] Structure and stabilization mechanism of a microjet methane diffusion flame near extinction [J].

Chen, C. -P. ;

Chao, Y. C. ;

Cheng, T. S. ;

Chen, G. -B. ;

Wu, C. -Y. .

PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2007, 31 :3301-3308

[10] Improvement of flame stability and NOx reduction in hydrogen-added ultra lean premixed combustion [J].

Cho, Eun-Seong ;

Chung, Suk Ho .

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, 2009, 23 (03) :650-658

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