|本期目录/Table of Contents|

[1]贾汇桥,张明伟,蔡 磊,等.水蒸气对煤粉在滴管炉富氧燃烧条件下着火的影响[J].燃烧科学与技术,2017,(05):424-428.[doi:10.11715/rskxjs.R201705015]
 Jia Huiqiao,Zhang Mingwei,Cai Lei,et al.Effect of Steam on Ignition of Pulverized Coal Particles in Oxy-FuelCombustion in a Drop Tube Furnace[J].Journal of Combustion Science and Technology,2017,(05):424-428.[doi:10.11715/rskxjs.R201705015]
点击复制

水蒸气对煤粉在滴管炉富氧燃烧条件下着火的影响()
分享到:

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

卷:
期数:
2017年05
页码:
424-428
栏目:
出版日期:
2017-10-15

文章信息/Info

Title:
Effect of Steam on Ignition of Pulverized Coal Particles in Oxy-Fuel Combustion in a Drop Tube Furnace
作者:
贾汇桥1张明伟2蔡 磊3陈武忠1邹 春1郑军妹4郑楚光1
1. 华中科技大学煤燃烧国家重点实验室,武汉 430074;2. 国家燃气用具产品质量监督检验中心(佛山), 佛山528000;3. 华中科技大学环境科学与工程学院,武汉 430074; 4. 浙江省健康智慧厨房系统集成重点实验室,宁波 315336
Author(s):
Jia Huiqiao1Zhang Mingwei2Cai Lei3Chen Wuzhong1Zou Chun1 Zheng Junmei4Zheng Chuguang1
1.State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074, China;2.China Quality Supervision & Test Center for Gas Appliances(Foshan),Foshan 528000,China; 3.School of Environmental Science and Engineering,Huazhong University of Science and Technology, Wuhan 430074,China;4.Key Laboratory of Healthy & Intelligent Kitchen System Integration of Zhejiang Province,Ningbo 315336,China
关键词:
O2/CO2/H2O气氛着火距离CFD物理属性化学属性
Keywords:
O2/CO2/H2O atmosphereignition distanceCFDphysical propertieschemical properties
分类号:
TK123
DOI:
10.11715/rskxjs.R201705015
文献标志码:
A
摘要:
通过实验和数值模拟研究了体积分数5%,、10%,、20%,和30%,的水蒸气替代CO2 在氧气体积分数为 21%,、30%,和40%,工况下,水蒸气对煤粉在O2/CO2/H2O 气氛中着火的影响.实验结果表明,体积分数5%,、 10%,和20%,的水蒸气添加到O2/CO2气氛中,其着火点位置没有明显区别.当水蒸气体积分数增加到30%,时,着 火点距离显著减小,着火提前.通过拟建的CFD 模型计算得出H2O 的化学属性导致了着火提前,而物理属性导 致了着火延迟,在高体积分数水蒸气条件下其化学属性的影响大于物理属性的影响,最终导致了着火大幅提前.
Abstract:
The substitution of CO2 by 5%,,10%,,20%, and 30%, steam was implemented to evaluate the effect of the mole fractions of steam on the ignition of coal in O2/CO2/H2O atmospheres with the oxygen mole fractions of 21%,,30%, and 40%, by using experimental and numerical methods.The experimental results reveal that the ignition distances are barely affected when the low mole fraction of steam(5%,,10%, and 20%,)was added to O2/CO2 atmospheres.As the mole fraction of steam was increased to 30%,,the ignition distance was significantly decreased. The numerical results indicate that the physical properties of steam lead to the ignition delay of coal while its chemical properties are beneficial to the ignition.

备注/Memo

备注/Memo:
收稿日期:2017-02-23. 基金项目:国家自然科学基金资助项目(51176055;50936001);教育部创新团队发展计划资助项目(50721005). 作者简介:贾汇桥(1991— ),男,博士研究生,470762553@qq.com. 通讯作者:张明伟,男,学士,高级工程师,zmw0064@163.com.
更新日期/Last Update: