A chemical mechanism of pollutants formation during combustion in gas turbines

WANG Feng; XIAO Junfeng; LI Xiaofeng; WANG Wei

English

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A chemical mechanism of pollutants formation during combustion in gas turbines

Thermal Power Generation Vol. 44, Issue 6, Pages: 10-15(2015)

更新时间：2025-09-28

- A chemical mechanism of pollutants formation during combustion in gas turbines
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK471
- Published：2015
- 稿件说明：
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WANG Feng, XIAO Junfeng, LI Xiaofeng, et al. A chemical mechanism of pollutants formation during combustion in gas turbines[J]. Thermal Power Generation, 2015, 44(6): 10-15.
DOI：

WANG Feng, XIAO Junfeng, LI Xiaofeng, et al. A chemical mechanism of pollutants formation during combustion in gas turbines[J]. Thermal Power Generation, 2015, 44(6): 10-15. DOI：

摘要

提出了一种新的适用于燃气轮机燃烧过程中污染物生成预测的化学反应机理

包含25种组分

75个基元反应。在激波管和预混燃烧条件下对该化学反应机理的着火延迟时间、火焰速度及反应物、主要中间产物及污染物生成特性进行了预测。结果表明

新机理预测结果与相关实验值及详细机理预测结果吻合较好

为化学反应动力学模型与多维CFD模型耦合计算燃烧和排放特性提供了可行途径。对燃气轮机燃烧室化学网络模型的分析结果表明

在贫燃预混燃烧条件下

Zeldovich与N2O生成机理在NO的形成过程中起主导作用。

Abstract

This paper presents a new reduced chemical kinetic model for predicting the pollutants formation during gas turbine combustion

which consists of 25 species and 75 elementary reactions.Moreover

the ignition delay time

flame speed and formation performance of the reactant

main intermediate products and pollutants were predicted by this new mechanism

under conditions of shock tube and lean premixed combustion.The calculation results show good consistency with the related experimental data in the literatures and results predicted by the detail mechanisms

thus a feasible approach for prediction of combustion and pollutant emission characteristics by coupling chemical reaction kinetics model with computational fluid dynamics model in gas turbines was provided.The analysis results of chemical network model of the gas turbine combustor show that

the Zeldovich and N2 O mechanisms play a leading role in the NO formation under the lean premixed combustion condition.

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