Kinetics study on co-combustion of coals with great difference

CHEN Hongwei; HUANG Xueli

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Kinetics study on co-combustion of coals with great difference

更新时间：2025-09-28

- Kinetics study on co-combustion of coals with great difference
- Thermal Power Generation Vol. 43, Issue 6, Pages: 46-50(2014)
- 作者机构：
  
  华北电力大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK16
- Published：2014
- 稿件说明：
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CHEN Hongwei, HUANG Xueli. Kinetics study on co-combustion of coals with great difference[J]. Thermal power generation, 2014, 43(6): 46-50.
DOI：

CHEN Hongwei, HUANG Xueli. Kinetics study on co-combustion of coals with great difference[J]. Thermal power generation, 2014, 43(6): 46-50. DOI：

摘要

以具有大差异煤质特性的河南新密无烟煤、内蒙古褐煤及其不同配比混煤作为研究对象进行非等温热重实验

通过TG/DTG曲线分析不同反应工况对燃烧特性和动力学参数的影响。结果表明

配比和升温速率对混煤掺烧特性影响较大

煤粉细度和空气流量存在中间最优值

混煤配比为7∶3或5∶5

升温速率30℃/min时具有良好的着火能力和燃尽特性

活化能较小

燃烧剧烈且稳定。实验结果可为燃烧大差异特性混煤机组的高效、安全、经济运行提供依据。

Abstract

Non-isothermal thermogravimetric experiments were carried out on two coals with great difference(Xinmi anthracite from Henan

and lignite from Inner Mongolia)and their mixtures.The effects of reaction condition on combustion characteristics and kinetic parameters of the reactions were studied

by analysis on the TG/DTG curves.The results indicate that:coal proportion in the mixtures and heating rate had a significant influence on co-firing properties

and there existed the optimum value of coal fineness and air flow;considering from various aspects

the coal blending ratio was chosen as 7∶3 or 5∶5;with the heating rate of 30mL/min

the coal mixtures had well ignition performance and burnout property

and the reaction activation energy was relatively small

the combustion is violent and stable.

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