Experimental Model Development of Oxygen-Enriched Combustion Kinetics on Porous Coal Char and Non-Porous Graphite

被引:8
|
作者
Kim, Gyeong-Min [1 ]
Kim, Jong-Pil [1 ]
Lisandy, Kevin Yohanes [1 ]
Jeon, Chung-Hwan [1 ,2 ]
机构
[1] Pusan Natl Univ, Sch Mech Engn, Busan 46241, South Korea
[2] Pusan Natl Univ, Pusan Clean Coal Ctr, Busan 46241, South Korea
来源
ENERGIES | 2017年 / 10卷 / 09期
关键词
combustion; oxygen enrichment; low-rank coal char; char oxidation; reaction kinetics; FLUID-SOLID REACTIONS; RANDOM PORE MODEL; LOW-RANK COAL; FUEL COMBUSTION; GASIFICATION; DIFFUSION; TEMPERATURE; PREDICTION; PARTICLES; GASIFIER;
D O I
10.3390/en10091436
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The effect of oxygen-enriched air on low-rank coal char combustion was experimentally investigated. In this work, a coal-heating reactor equipped with a platinum wire mesh in the reaction chamber was used to analyze the combustion temperature, reaction time, and reaction kinetics. Increasing the oxygen content of the primary combustion air increased the combustion temperature and decreased the reaction time. As the oxygen content increased from 21% to 30%, the average temperature increased by 47.72 K at a setup temperature of 1673 K, and the reaction time decreased by 30.22% at the same temperature. The graphite sample exhibited similar trends in temperature and reaction time, although the degree of change was smaller because the pores produced during char devolatilization expanded the active surface available for oxidation of the char sample. A mathematical model was used to define the intrinsic kinetics of the reaction. As the oxygen content increased from 21% to 30%, the reaction rate of the low-rank coal char increased. These results were also compared with those of the graphite sample.
引用
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页数:14
相关论文
共 22 条
  • [1] Kinetic characteristics of coal char combustion in oxygen-enriched environment
    Wang, Jing
    Chen, Hanping
    Yang, Haiping
    Zhang, Shihong
    [J]. 2011 ASIA-PACIFIC POWER AND ENERGY ENGINEERING CONFERENCE (APPEEC), 2011,
  • [2] Combustion kinetics of coal chars in oxygen-enriched environments
    Murphy, JJ
    Shaddix, CR
    [J]. COMBUSTION AND FLAME, 2006, 144 (04) : 710 - 729
  • [3] Study on combustion characteristic of coal-char in oxygen-enriched environments
    Chen, Hanping
    Wang, Jing
    Yang, Haiping
    Zhang, Shihong
    Chen, Yingquan
    [J]. 2009 ASIA-PACIFIC POWER AND ENERGY ENGINEERING CONFERENCE (APPEEC), VOLS 1-7, 2009, : 275 - 279
  • [4] Kinetics model of corncob/coal blends during isothermal oxygen-enriched combustion
    [J]. Wang, Chunbo (hdwchb@126.com), 1600, Science Press (37):
  • [5] Modeling and Experimental Studies on Combustion Characteristics of Porous Coal Char: Volume Reaction Model
    Sadhukhan, Anup Kumar
    Gupta, Parthapratim
    Saha, Ranajit Kumar
    [J]. INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 2010, 42 (05) : 299 - 315
  • [6] Ignition model and kinetic parameters analysis of oxygen-enriched combustion of pulverized coal
    Zhou, Zhi-Jun
    Jiang, Xu-Dong
    Zhou, Jun-Hu
    Liu, Jian-Zhong
    Cen, Ke-Fa
    [J]. Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science), 2012, 46 (03): : 482 - 488
  • [7] Experimental Study on NOx Emission Characteristics of Pulverized Coal Oxygen-enriched Staged Combustion
    Chen, Huaijun
    Niu, Fang
    Gong, Yanyan
    Wei, Yanrong
    Wang, Naiji
    [J]. Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 2023, 43 (08): : 3092 - 3099
  • [8] Experimental Study on the Oxygen-enriched Co-combustion of Sewage Sludge and Coal in CFB
    Liu Han-zhou
    Lu Xiao-feng
    [J]. SPORTS, ARTS MATERIALS AND MANAGEMENT SCIENCE, 2012, 507 : 157 - 161
  • [9] Experimental investigation of NOx emissions during pulverized char combustion in oxygen-enriched air preheated with a circulating fluidized bed
    Zhu, Shujun
    Lyu, Qinggang
    Zhu, Jianguo
    [J]. JOURNAL OF THE ENERGY INSTITUTE, 2019, 92 (05) : 1388 - 1398
  • [10] Modeling the fragmentation of non-uniform porous char particles during pulverized coal combustion
    Liu, G
    Wu, H
    Gupta, RP
    Lucas, JA
    Tate, AG
    Wall, TF
    [J]. FUEL, 2000, 79 (06) : 627 - 633