Effects of flow rate and equivalence ratio on syngas flames in a multi-nozzle micromix model combustor

被引：9

作者：

Chen, Mengshi ^{[1
]}

Zhao, Yijun ^{[1
]}

Zhang, Linyao ^{[1
]}

Xing, Chang ^{[1
]}

Liu, Li ^{[1
]}

Qiu, Penghua ^{[1
]}

Sun, Shaozeng ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 49卷

基金：

中国国家自然科学基金;

关键词：

IGCC gas turbines; Micromix combustion; OH* chemiluminescence; Flame structure; HEAT-RELEASE RATE; HYDROGEN-RICH SYNGAS; METHANE/AIR; INSTABILITY; EMISSIONS; EXCITATION; STABILITY; MARKERS; SPEED; SWIRL;

D O I：

10.1016/j.ijhydene.2023.10.323

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, the flame structural parameters, OH* distribution characteristics, and dynamic behavior of the global heat release rate of a novel multi-nozzle micromix model combustor are experimentally investigated. The experiments were conducted at atmospheric pressure, high air temperature (691 K), equivalence ratio of 0.1-1.2, and air velocity of 30-80 m/s. The results demonstrate that the combustor has a wide operation window of stable combustion. The flame height is weakly related to air velocity and varies with equivalence ratio from 4D to 19D (D = 10 mm). The peak position of axial OH* intensity at the same flow rate keeps unchanged at various equivalence ratios, and the peak position of axial OH* increases in the range of 1.5D similar to 2.3D with increasing air velocity. The global heat release fluctuation of the flame becomes larger as the equivalence ratio decreases, which shows unsteady combustion behavior.

引用

页码：1268 / 1277

页数：10

共 35 条

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