Experiment and Numerical Study on Emission Characteristics of Premixing Fuel Nozzle in Gas Turbine Combustor

被引：0

作者：

Zhao W.-J. ^{[1
,2
]}

Yu Z.-M. ^{[1
]}

He H.-J. ^{[1
]}

Ai Y.-H. ^{[1
]}

Wang Y. ^{[1
,2
]}

机构：

[1] Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing

[2] University of Chinese Academy of Sciences, Beijing

来源：

Tuijin Jishu/Journal of Propulsion Technology | 2020年 / 41卷 / 02期

关键词：

Chemical reactor networks; Combustor; Gas turbine; Low emission; Premixed combustion;

D O I：

10.13675/j.cnki.tjjs.190149

中图分类号：

学科分类号：

摘要：

In order to study the effects of equivalence ratio, pilot fuel flowrate, and pressure on emission characteristics of premixing fuel nozzle in gas turbine combustor, combustion experiment on emission of premixing fuel nozzle were conducted at atmospheric pressure, and an emission prediction model based on chemical reactor networks was proposed. The experimental and numerical results indicated that the nozzle would meet the low NOx emission standard at equivalence ratios from 0.35 to 0.5, but increasing pilot fuel flowrate would lead NOx emission to increase. The increase of pressure have no effect on NOx emission of pure premixed combustion at φ<0.4, otherwise, NOx would rise with the increasing pressure. NOx emission of premixed combustion with pilot flame was sensitive to pressure change and would increase as pressure increased. The premixing fuel nozzle, the mixing performance of which is insensitive to air velocity, which has strong fuel compatibility and a wide range of equivalence ratio to meet emission limit, has the potential to be used in low emission combustors of gas turbines after further development. The chemical reactor networks (CRN) model presented relies less on experience and the emission prediction of which is in good agreement with the experimental data when the ratio of pilot fuel to total fuel is no greater than 0.17. © 2020, Editorial Department of Journal of Propulsion Technology. All right reserved.

引用

页码：362 / 371

页数：9

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