|本期目录/Table of Contents|

[1]李德波,张远航,赵 菁,等.O2/CO2气氛下煤粉燃烧特性及动力学分析[J].燃烧科学与技术,2018,(03):223-231.[doi:10.11715/rskxjs.R201703047]
 Li Debo,Zhang Yuanhang,Zhao Jing,et al.Coal Combustion Characteristics and Kinetics Analysis in O2/CO2 Atmosphere[J].Journal of Combustion Science and Technology,2018,(03):223-231.[doi:10.11715/rskxjs.R201703047]
点击复制

O2/CO2气氛下煤粉燃烧特性及动力学分析()
分享到:

《燃烧科学与技术》[ISSN:1006-8740/CN:12-1240/TK]

卷:
期数:
2018年03
页码:
223-231
栏目:
出版日期:
2018-06-15

文章信息/Info

Title:
Coal Combustion Characteristics and Kinetics Analysis in O2/CO2 Atmosphere
作者:
李德波1张远航2赵 菁2王长安2冯永新1车得福2
1. 广东电网有限责任公司电力科学研究院,广州 510080;2. 西安交通大学动力工程多相流国家重点实验室,西安 710049
Author(s):
Li Debo1Zhang Yuanhang2Zhao Jing2Wang Chang′an2Feng Yongxin1Che Defu2
1.Electric Power Research Institute of Guangdong Power Grid Corporation,Guangzhou 510080,China; 2.State Key Laboratory of Multiphase Flow in Power Engineering,Xi′an Jiaotong University,Xi′an 710049,China
关键词:
热重分析O2/CO2燃烧氧体积分数粒径燃烧特性动力学分析
Keywords:
thermogravimetric analysisO2/CO2 combustionoxygen concentrationparticle sizecombustion characteristicskinetics analysis
分类号:
TK16
DOI:
10.11715/rskxjs.R201703047
文献标志码:
A
摘要:
采用热重实验系统进行了煤粉在O2/N2 和O2/CO2 气氛下的燃烧实验,研究了氧体积分数和粒径对燃烧特性的影响.实验结果表明,氧体积分数越高、粒径越小,煤粉的燃烧特性越好.在氧体积分数较高时,煤粉在O2/CO2气氛下的反应比在O2/N2气氛下进行得慢;而氧体积分数较低时,煤粉在O2/CO2气氛下的反应比在O2/N2气氛下进行得快.此外,采用Coats-Redfern 积分法、Flynn-Wall-Ozawa 积分法和Kissinger-Akahira-Sunose 积分法对煤粉在程序升温过程中的燃烧反应做了相应的动力学分析.结果表明,O2/N2和O2/CO2气氛下不同氧体积分数时的煤粉燃烧反应动力学参数表观活化能E 和指前因子A 之间具有动力学补偿效应.煤粉燃烧过程中在同一转化率下的表观活化能E 随其粒径的减小而降低.
Abstract:
A series of pulverized coal combustion experiments in O2/N2 and O2/CO2 atmosphere were performed in a thermogravimetric analyzer(TGA)to study the effects of oxygen concentration and particle size on combustion characteristic.The results indicate that the combustion characteristics of pulverized coal are improved with the increase in oxygen concentration and the decrease in particle size.Under high oxygen concentration,the reaction in O2/CO2 atmosphere is slower than that in O2/N2 atmosphere.But the reaction in O2/CO2 atmosphere is faster than that in O2/N2 atmosphere under low oxygen concentration.In addition,the kinetics analysis of coal combustion in the heating process was carried out by Coats-Redfern method,FWO method and KAS method.The results show that there exists a kinetic compensation effect between the activation energy E and the pre-exponential factor A in the pulverized coal combustion under different oxygen concentrations in the atmospheres of O2/N2 and O2/CO2.The reactivity of pulverized coal combustion is low at the early and later stage.The apparent activation energy of coal combustion decreases with the decrease of particle size under the same conversion rate.

相似文献/References:

[1]全 翠,李爱民,高宁博.几种典型电子垃圾大物料量热重实验及机理研究[J].燃烧科学与技术,2010,(01):45.
 QUAN Cui,LI Ai-min,GAO Ning-bo.Investigation on Large Sample Pyrolysis Characteristics and Mechanism Analysis of Typical Components of WEEE[J].Journal of Combustion Science and Technology,2010,(03):45.
[2]刘洪鹏,李惟毅,赵卫振,等. 油页岩干馏残渣与玉米秸秆混烧特性[J].燃烧科学与技术,2011,(03):255.
 LIU Hong-peng,LI Wei-yi,ZHAO Wei-zhen,et al. Combustion Characteristics of Oil Shale Semi-Coke and Cornstalk Blends[J].Journal of Combustion Science and Technology,2011,(03):255.
[3]雷 鸣,王春波,王松岭,等. 煤粉热解特性对其富氧气氛下着火机理的影响[J].燃烧科学与技术,2012,(03):260.
 LEI Ming,WANG Chun-bo,WANG Song-ling,et al. Effect of Pyrolysis Characteristics of Pulverized Coal on theIgnition Mechanism of Oxy-Fuel Combustion[J].Journal of Combustion Science and Technology,2012,(03):260.
[4]宁寻安,魏培涛,刘敬勇,等. 印染污泥与木屑混燃特性及动力学[J].燃烧科学与技术,2012,(02):131.
 NING Xun-an,WEI Pei-tao,LIU Jing-yong,et al. Co-Combustion Characteristics and Kinetics ofTextile Dyeing Sludge and Sawdust[J].Journal of Combustion Science and Technology,2012,(03):131.
[5]孙才英,马丽春,李丽萍,等. 木粉含量对木粉/PP复合材料的热性能与燃烧性能的影响[J].燃烧科学与技术,2011,(05):388.
 SUN Cai-ying,MA Li-chun,LI Li-ping,et al. Effect of Wood-Flour Content on the Thermal and CombustionProperties of Wood-Flour/Polypropylene Composites[J].Journal of Combustion Science and Technology,2011,(03):388.
[6]崔 嵛,程旭东,龚伦伦,等. 膨胀聚苯乙烯泡沫热氧化分解动力学研究[J].燃烧科学与技术,2011,(06):558.
 CUI Yu,CHENG Xu-dong,GONG Lun-lun,et al. Kinetics of the Thermo-Oxidative Decomposition ofExpanded Polystyrene Foam[J].Journal of Combustion Science and Technology,2011,(03):558.
[7]杨 冬,陈清文.北方地区典型生物质的热重分析及动力学研究[J].燃烧科学与技术,2014,(04):319.[doi:10.11715/rskxjs.R201311002]
 Yang Dong,Chen Qingwen.TG-DTG Analysis and Kinetics of Typical Biomass in Northern China[J].Journal of Combustion Science and Technology,2014,(03):319.[doi:10.11715/rskxjs.R201311002]
[8]刘鹏刚,蒲万芬,贾 虎,等. 岩屑存在下油藏注空气原油的氧化热解分析[J].燃烧科学与技术,2015,(05):464.[doi:10.11715/rskxjs.R201411030]
 Liu Penggang,Pu Wanfen,Jia Hu,et al. Oil Oxidation Pyrolysis Analysis of Oil Reservoir AirInjection in the Presence of Cutting[J].Journal of Combustion Science and Technology,2015,(03):464.[doi:10.11715/rskxjs.R201411030]
[9]刘 成,刘 亮,尹艳山,等.TG-FTIR 研究垃圾衍生燃料轻质气体析出特性[J].燃烧科学与技术,2017,(05):471.[doi:10.11715/rskxjs.R201609001]
 Liu Cheng,Liu Liang,Yin Yanshan,et al.TG-FTIR Analysis of Light Gases Characteristics of Refuse-Derived Fuel[J].Journal of Combustion Science and Technology,2017,(03):471.[doi:10.11715/rskxjs.R201609001]
[10]刘柏谦.桦甸油页岩燃烧过程的热重分析[J].燃烧科学与技术,1998,(01):51.
 Thermogravimetry of the Combustion Processes of Huadian Oil Shale[J].Journal of Combustion Science and Technology,1998,(03):51.

备注/Memo

备注/Memo:
收稿日期:2017-04-27. 基金项目:南方电网公司科技资助项目(GDKJQQ20152013). 作者简介:李德波(1983— ),男,博士,教授级高级工程师,ldbyx@126.com. 通讯作者:车得福,男,博士,教授,dfche@mail.xjtu.edu.cn.
更新日期/Last Update: