Thermogravimetry based analysis on the influence of CO<sub>2</sub> on oxy-fuel combustion characteristics of lignite

HU Xin; Zhou Zhijun; Wang Zhihua; You Zhuo; ZHOU Junhu; CEN Kefa State Key Laboratory of Clean Energy Utilization

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Thermogravimetry based analysis on the influence of CO₂ on oxy-fuel combustion characteristics of lignite

更新时间：2025-09-28

- Thermogravimetry based analysis on the influence of CO₂ on oxy-fuel combustion characteristics of lignite
- Thermal Power Generation Vol. 42, Issue 3, Pages: 15-24(2013)
- 作者机构：
  
  1. 浙江大学能源清洁利用国家重点实验室
  2. 浙江大学能源清洁利用国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK16
- Published：2013
- 稿件说明：
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HU Xin, Zhou Zhijun, Wang Zhihua, et al. Thermogravimetry based analysis on the influence of CO₂ on oxy-fuel combustion characteristics of lignite[J]. Thermal power generation, 2013, 42(3): 15-24.
DOI：

HU Xin, Zhou Zhijun, Wang Zhihua, et al. Thermogravimetry based analysis on the influence of CO₂ on oxy-fuel combustion characteristics of lignite[J]. Thermal power generation, 2013, 42(3): 15-24. DOI：

摘要

利用热分析法研究了准东褐煤和伊敏褐煤在21%O2浓度的O2/N2和O2/CO2气氛下的燃烧反应过程

得到其在不同气氛下的着火温度、燃尽温度、最大反应速率和最大反应速率温度等特征参数

同时计算各反应过程的综合燃烧特性指数

并基于Coats-Redfern法得出了各反应的动力学参数。试验结果表明:O2/CO2气氛下两煤种的燃烧反应均受到抑制

反应速率降低

反应时间延长;CO2对煤化程度更低的褐煤燃烧反应抑制作用更为明显。综合燃烧特性指数和动力学参数的计算结果与试验结果相符。

Abstract

The combustion characteristics of ZD lignite and YM lignite in O2/N2 and O2/CO2 atmospheres with O2concentration of 21% was investigated by thermogravimetry.Such combustion characteristic parameters as ignition temperature

burnout temperature

the maximum reaction rate and the maximum reaction rate temperature were obtained

and the comprehensive combustion characteristic index for each reaction was calculated.Moreover

by Coats-Redfern method

the reaction kinetic parameters were obtained.The experimental results showed that the lignite combustion was inhibited in O2/CO2 atmosphere

the reaction rate decreased and the reaction time lengthened.In addition

the CO2 had more obvious inhibition effect on lignite with lower coalification degree.The calculation results were consistent with that of the experiment.

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Zhejiang University

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Thermogravimetry based analysis on the influence of CO2 on oxy-fuel combustion characteristics of lignite

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Thermogravimetry based analysis on the influence of CO₂ on oxy-fuel combustion characteristics of lignite