NUMERICAL RESEARCH OF HEAT AND MASS TRANSFER DURING LOW-TEMPERATURE IGNITION OF A COAL PARTICLE

被引：27
|
作者：
Glushkov, Dmitrii O. [1 ]
Strizhak, Pavel A. [1 ]
Vysokomornaya, Olga V. [1 ]
机构：
[1] Natl Res Tomsk Polytech Univ, Tomsk, Russia
来源：
THERMAL SCIENCE | 2015年 / 19卷 / 01期
关键词：
heat and mass transfer; coal particle; low-temperature air flow; ignition; numerical research; POROUS CARBON PARTICLE; OXY-FUEL COMBUSTION; PULVERIZED COAL; ENERGY-CONSERVATION; SELF-IGNITION; MIXTURE; MODEL; POWER; KINETICS; SYSTEM;
D O I：
10.2298/TSCI140521107G
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Numerical researches have been carried out to study the influence of air flow temperature and a fossil fuel particle rate on sufficient conditions of ignition in a "coal particle-air" system. Developed mathematical model takes into account interconnected processes of heat transfer in a coal particle and gas area, thermal decomposition of organic material, diffusion and gas-phase oxidation of volatiles, heating of a coke (carbon) and its heterogeneous ignition. The effect of low-temperature (about 600 K) ignition for a single coal particle is impossible even at variation of its rate (radius) from 0.05, mm to 0.5 mm. Nevertheless this process is possible for group of particles (two, three, et al) situated at close-range from each other. The physical aspects of the problem are discussed.
引用
收藏
页码：285 / 294
页数：10
相关论文
共 50 条
  • [41] Effects of 1-butyl-3-methylimidazolium tetrafluoroborate on the exothermic and heat transfer characteristics of coal during low-temperature oxidation
    Li, Da-Jiang
    Xiao, Yang
    Lu, Hui-Fei
    Xu, Fan
    Liu, Kun-Hua
    Shu, Chi-Min
    FUEL, 2020, 273
  • [42] INFLUENCE OF HEAT-TRANSFER AGENT MASS ON THE HEAT-TRANSFER LIMIT IN LOW-TEMPERATURE HEAT PIPES WITH A CORRUGATED MESH WICK
    APTEKAR, BF
    BAUM, YM
    HIGH TEMPERATURE, 1982, 20 (01) : 138 - 142
  • [43] Research of the Processes of Heat and Mass Transfer of Indoor Air During Temperature Control
    Tsygankov, A., V
    Lysev, V., I
    Rubtsov, A. K.
    Shilin, A. S.
    OIL AND GAS ENGINEERING (OGE-2020), 2020, 2285
  • [44] Study on the relationship between microscopic functional group and coal mass changes during low-temperature oxidation of coal
    Zhou, Chunshan
    Zhang, Yulong
    Wang, Junfeng
    Xue, Sheng
    Wu, Jianming
    Chang, Liping
    INTERNATIONAL JOURNAL OF COAL GEOLOGY, 2017, 171 : 212 - 222
  • [45] Numerical research of heat and mass transfer at the ignition of system "fabric - combustible liquid - oxidant" by the local energy source
    Glushkov, Dmitrii O.
    Kuznetsov, Genii V.
    Strizhak, Pavel A.
    THERMOPHYSICAL BASIS OF ENERGY TECHNOLOGIES, 2015, 82
  • [46] MICROSTRUCTURAL CHANGES IN COAL DURING LOW-TEMPERATURE ASHING
    ALLEN, RM
    CARLING, RW
    VANDERSANDE, JB
    FUEL, 1986, 65 (03) : 321 - 326
  • [47] Comparative study on heat transfer characteristics of coal during low temperature oxidation and pyrolysis
    Deng J.
    Ren S.
    Xiao Y.
    Li Q.
    Wang C.
    Meitan Xuebao/Journal of the China Coal Society, 2019, 44 : 171 - 177
  • [48] Distribution of ignition temperature and ignition heat of power coal in China
    Fan, Jinyuan
    Chen, Hongwei
    Huagong Xuebao/CIESC Journal, 2015, 66 (10): : 4170 - 4176
  • [49] HEAT AND MASS-TRANSFER ANALYSIS OF A COAL PARTICLE UNDERGOING PYROLYSIS
    PHUOC, TX
    DURBETAKI, P
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1987, 30 (11) : 2331 - 2339
  • [50] Low-temperature heat transfer mediums for cryogenic applications
    Jouhara, Hussam
    Chauhan, Amisha
    Guichet, Valentin
    Delpech, Bertrand
    Abdelkareem, Mohammad Ali
    Olabi, A. G.
    Trembley, Jon
    JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS, 2023, 148
12345