Modeling changes of fractal pore structures in coal pyrolysis

被引：35
|
作者：
Chen, Yongli [1 ]
Wang, Xiaoliang [1 ]
He, Rong [1 ]
机构：
[1] Tsinghua Univ, Dept Thermal Engn, Beijing 100084, Peoples R China
来源：
FUEL | 2011年 / 90卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Coal; Pore; Pyrolysis; Fractal; X-RAY-SCATTERING; CHAR; EVOLUTION; DEVOLATILIZATION; TEMPERATURE; COMBUSTION; DIMENSIONS; PRESSURE; PROPERTY; BEHAVIOR;
D O I：
10.1016/j.fuel.2010.10.016
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：
Coal pyrolysis processes are numerically investigated in mathematically produced coal pore models which simulate real coal pores in the parameters of the porosity and fractal dimension. The simulations include FG-DVC chemical reaction model, gas molecular diffusion in pores, energy conservation model and coal swelling model. Numerical results are verified by experimental results qualitatively, and they revealed that both the porosity and volatile contents of the parent coal can affect the fractal dimension of the final char pores after pyrolysis linearly. A formula to predict the fractal dimension of char pores from its parent coal properties is obtained by curve fitting in numerous results. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：499 / 504
页数：6
相关论文
共 50 条
  • [1] Study on fractal dimensions of coal and their pore structures
    Xu, Longjun
    Zhang, Daijun
    Xian, Xuefu
    Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology, 1996, 24 (01): : 81 - 86
  • [2] Numerical simulation of pore fractal dimension evolution during coal pyrolysis
    Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
    Qinghua Daxue Xuebao, 2008, 2 (244-247):
  • [3] Fractal characteristics of pore structures in 13 coal specimens: Relationship among fractal dimension, pore structure parameter, and slurry ability of coal
    Zhu, Jie-Feng
    Liu, Jian-Zhong
    Yang, Yu-Meng
    Cheng, Jun
    Zhou, Jun-Hu
    Cen, Ke-Fa
    FUEL PROCESSING TECHNOLOGY, 2016, 149 : 256 - 267
  • [4] Influences of Different Acid Solutions on Pore Structures and Fractal Features of Coal
    Zhang, Jingshuo
    Ni, Xiaoming
    Liu, Xiaolei
    Su, Erlei
    FRACTAL AND FRACTIONAL, 2024, 8 (02)
  • [5] Effect of Fragmentation on Pore Structures and Fractal Characteristics of Intact Coal and Deformed Coal Based on Experiments
    Li, Mingjie
    Lu, Shouqing
    Wang, Chengfeng
    Liu, Jie
    Shi, Jiang
    Bei, Taibiao
    GEOFLUIDS, 2022, 2022
  • [6] Impacts of pore fractal structures of pulverized coals on coal water slurry properties
    Cheng, Jun
    Chen, Xun-Gang
    Liu, Jian-Zhong
    Zhou, Jun-Hu
    Cen, Ke-Fa
    Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 2008, 28 (23): : 60 - 64
  • [7] Effects of fractal pore on coal devolatilization
    Chen, Yongli
    Wang, Xiaoliang
    Cao, Liyong
    He, Rong
    CLEANER COMBUSTION AND SUSTAINABLE WORLD, 2012, : 134 - 138
  • [8] FRACTAL PORE SURFACES IN BROWN-COAL, THEIR CHANGES ON PROCESSING AND THEIR EFFECT ON COMBUSTION
    SNOOK, I
    MCMAHON, P
    LANGMUIR, 1993, 9 (10) : 2726 - 2729
  • [9] Effects of composition changes of coal treated with hydrochloric acid on pore structure and fractal characteristics
    Yi, Minghao
    Cheng, Yuanping
    Wang, Chenghao
    Wang, Zhenyang
    Hu, Biao
    He, Xinxin
    FUEL, 2021, 294
  • [10] 3D digital rock modeling of the fractal properties of pore structures
    Luo, Miao
    Glover, Paul W. J.
    Zhao, Peiqiang
    Li, Dong
    MARINE AND PETROLEUM GEOLOGY, 2020, 122
12345