PYROLYSIS AND COMBUSTION CHARACTERISTICS OF DIFFERENT RANK COALS IN O2/CO2(N2) ENVIRONMENTS

CHU Wei; ZHOU Yuegui; XU Yangyang; GU guangjin School of Mechanical Engineering

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PYROLYSIS AND COMBUSTION CHARACTERISTICS OF DIFFERENT RANK COALS IN O₂/CO₂(N₂) ENVIRONMENTS

更新时间：2025-09-28

- PYROLYSIS AND COMBUSTION CHARACTERISTICS OF DIFFERENT RANK COALS IN O₂/CO₂(N₂) ENVIRONMENTS
- Thermal Power Generation Vol. 41, Issue 12, Pages: 33-38(2012)
- 作者机构：
  
  上海交通大学机械与动力工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK16
- Published：2012
- 稿件说明：
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CHU Wei, ZHOU Yuegui, XU Yangyang, et al. PYROLYSIS AND COMBUSTION CHARACTERISTICS OF DIFFERENT RANK COALS IN O₂/CO₂(N₂) ENVIRONMENTS[J]. Thermal power generation, 2012, 41(12): 33-38.
DOI：

CHU Wei, ZHOU Yuegui, XU Yangyang, et al. PYROLYSIS AND COMBUSTION CHARACTERISTICS OF DIFFERENT RANK COALS IN O₂/CO₂(N₂) ENVIRONMENTS[J]. Thermal power generation, 2012, 41(12): 33-38. DOI：

摘要

采用热重-质谱联用仪分别研究了3种煤在O2/N2和O2/CO2气氛下的热解和燃烧特性。结果表明

与N2气氛相比

CO2气氛下煤粉的热解过程可分为水分的蒸发、挥发分的释放以及较高温度下煤焦与CO2的气化反应;随燃烧气氛中氧浓度的增加

煤粉的TG-DTG曲线移向低温区

着火温度和燃尽温度降低

煤粉综合燃烧特性指数增大;在相同的燃烧气氛及氧浓度下

PRB次烟煤的着火温度和燃尽温度明显低于Illinois烟煤和Utah烟煤。

Abstract

Thermogravimetric-Mass spectrometry(TG-MS) was used to study the pyrolysis and combustion characteristics of three rank coals in different environments(O2/CO2(N2)).Results show that

compared to pyrolysis in N2 environment

coal pyrolysis in CO2 environment can be divided into three stages:water evaporation

volatile matters release and char gasification by CO2 in higher temperature zone.With the increasing oxygen concentration

the combustion TG-DTG curves move to the lower temperature zone

and the ignition temperature and burnout temperature decrease

which means the comprehensive combustion property index increases.Under the same combustion environment and oxygen content

the ignition temperature and burnout temperature of PRB sub-bituminous coal are obviously lower than that of the Illinois and Utah bituminous coal.

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