Experimental study on coal combustion characteristics in sintering flue gas atmosphere by thermogravimetry analysis

TAO Xin; CAI Runxia; CHEN Lujian; ZHANG Man; YANG Hairui; ZHANG Shouyu; LYU Junfu

doi:10.19666/j.rlfd.201912276

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Experimental study on coal combustion characteristics in sintering flue gas atmosphere by thermogravimetry analysis

更新时间：2025-09-28

- Experimental study on coal combustion characteristics in sintering flue gas atmosphere by thermogravimetry analysis
- Thermal Power Generation Vol. 49, Issue 7, Pages: 55-60(2020)
- 作者机构：
  
  1. 上海理工大学能源与动力工程系
  2. 清华大学能源与动力工程系教育部重点实验室
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201912276
  CLC： TK224.1+1
- Published Online：27 June 2020，
  
  Published：2020
- 稿件说明：
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TAO Xin, CAI Runxia, CHEN Lujian, et al. Experimental study on coal combustion characteristics in sintering flue gas atmosphere by thermogravimetry analysis[J]. Thermal power generation, 2020, 49(7): 55-60.
DOI：

TAO Xin, CAI Runxia, CHEN Lujian, et al. Experimental study on coal combustion characteristics in sintering flue gas atmosphere by thermogravimetry analysis[J]. Thermal power generation, 2020, 49(7): 55-60. DOI： 10.19666/j.rlfd.201912276.

摘要

为了探索烧结烟气循环流化床燃烧技术的可行性

采用大容量热重分析仪(LC-TGA)研究了左云烟煤、平朔烟煤和钱家营烟煤在低氧(含CO)气氛下的燃烧特性

并研究了CO体积分数对煤粉燃烧的影响。结果表明:低氧气氛下氧气体积分数和反应温度的变化对煤粉燃烧有很大的影响;CO在煤粉燃烧时存在明显的抢氧行为

其能力与温度密切相关

与氧气体积分数关联较小;当反应温度为750℃时

CO燃烧的抢氧能力强于煤粉燃烧

但当温度上升至850℃时

CO燃烧的抢氧能力小于煤粉燃烧。实验所得结果可以为烧结烟气循环流化床燃烧技术的发展提供参考。

Abstract

In order to explore the feasibility of burning sintering flue gas in circulating fluidized bed(CFB)

a large capacity thermogravimetric analyzer(LC-TGA) was used to study the combustion characteristics of Zuoyun bituminous coal

Pingshuo bituminous coal and Qianjiaying bituminous coal in synthetic gas(low oxygen content and contains CO) with similar composition as sintering flue gas. Moreover

the effect of CO volume fraction on the coal combustion of was studied. The results show that

the change of oxygen concentration and combustion temperature will greatly affect the combustion of coal in low oxygen content atmosphere. CO has obvious oxygen grabbing behavior during coal burning

and this ability is closely related to temperature but less related to oxygen volume fraction. At 750 ℃

the oxygen-grabbing capacity of CO combustion is stronger than that of coal combustion

but when the temperature rises to 850 ℃

the oxygen-grabbing capacity of CO combustion is weaker than that of coal combustion. The experimental results can provide the reference for further development of sintering flue gas CFB combustion technology.

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