|本期目录/Table of Contents|

[1]张 斌,傅培舫,刘 洋,等. 煤粉特征温度及热量释放特性[J].燃烧科学与技术,2017,(06):523-529.[doi:DOI 10.11715/rskxjs.R201609010]
 Zhang Bin,Fu Peifang,Liu Yang,et al. Characteristic Temperatures and Heat ReleaseProperties of Coal Combustion[J].Journal of Combustion Science and Technology,2017,(06):523-529.[doi:DOI 10.11715/rskxjs.R201609010]
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 煤粉特征温度及热量释放特性()
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《燃烧科学与技术》[ISSN:1006-8740/CN:12-1240/TK]

卷:
期数:
2017年06
页码:
523-529
栏目:
出版日期:
2017-12-15

文章信息/Info

Title:
 Characteristic Temperatures and Heat Release
Properties of Coal Combustion
作者:
 张 斌傅培舫刘 洋岳 芳
 华中科技大学煤燃烧国家重点实验室,武汉 430074
Author(s):
 Zhang BinFu PeifangLiu YangYue Fang
 State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China
关键词:
 煤粉燃烧热重-差式扫描量热仪加热速率释热加速度
Keywords:
 coal combustionthermogravimetry and differential scanning calorimeterheat rateacceleration ofheat release
分类号:
TQ531.9
DOI:
DOI 10.11715/rskxjs.R201609010
文献标志码:
A
摘要:
 通过热重和差示扫描量热(TG-DSC)同步热分析仪在空气气氛条件下研究不同煤阶煤粉的燃烧特性.将
煤粉在挥发分燃烧及焦炭燃烧过程分为 4 个不同的反应区域.研究得出,煤粉低温氧化主要从 150~200,℃区段
开始显著发生,200,℃之前,不同加热速率下的煤粉低温氧化并无明显区别;随着煤阶的增加,吸氧增重量逐渐
降低;煤粉在挥发分燃烧及焦炭燃烧区段内对应的最大热流量均随加热速率的增加而增加,且释热加速度也随之
增加;相同加热速率下,煤阶增加导致释热加速度减小.煤粉在高温段氧化最大热流值对应的温度 Tmax、着火温
度 Ti、强着火温度 Tig 及其他特征温度均随加热速率及煤阶的增加而增加.
Abstract:
 Combustion characteristics of different ranks of coal samples were investigated by using differential
scanning calorimeter(DSC)and thermogravimetry analysis(TG),under air atmosphere.The processes of coal
combustion which includes combustion of volatile matter and combustion of coal carbon are divided into four different reaction zones.The results show that the low temperature oxidation mainly occur in the temperature range of
150—200,℃,there is no significant difference between the low-temperature oxidation of pulverized coal under
different heating rates before 200,℃.With the increase of coal rank,the weight of oxygen absorption decreases.Both in the combustion of volatile matter and combustion of coal carbon,the maximum heat flow increases with increasing heating rate,and the acceleration of heat release is also increasing.At the same heating
rate,increasing of coal rank leads to decreasing of acceleration of heat release.The temperature corresponding to
the maximum heat flow T
max of high temperature combustion,the ignition temperature Ti,the intensive ignition
temperature Tig and other characteristic temperatures both increase with heating rate and coal rank.

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备注/Memo

备注/Memo:
 收稿日期:2016-11-17.
基金项目:国家自然科学基金资助项目(51576082).
作者简介:张 斌(1987— ),男,博士,zbinhust@sina.com.
通讯作者:傅培舫,男,博士,教授,pffu@hust.edu.cn.
更新日期/Last Update: