Intra-particle diffusion limitation for steam methane reforming over a Ni-based catalyst

被引:41
|
作者
Pashchenko, Dmitry [1 ,2 ,3 ]
机构
[1] Guangdong Technion Israel Inst Technol, Dept Mech Engn Robot, 241 Daxue Rd, Shantou 515063, Guangdong, Peoples R China
[2] Technion Israel Inst Technol, Fac Mech Engn, IL-3200003 Haifa, Israel
[3] Guangdong Technion Israel Inst Technol, Guangdong Prov Key Lab Mat & Technol Energy Conver, Shantou 515063, Guangdong, Peoples R China
关键词
CFD; Methane reforming; Diffusion; Effectiveness factor; HEAT-TRANSFER; NICKEL-CATALYST; FLUID-FLOW; CFD SIMULATIONS; BED REACTORS; PARTICLES; TRANSPORT; MODEL;
D O I
10.1016/j.fuel.2023.129205
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
This work aims to evaluate the diffusion limitation for the steam methane reforming process over spherical catalyst particles (Ni/������-Al2O). Numerical calculations based on a CFD model were conducted to determine the intrinsic and actual reaction rates. The CFD model was validated using experimental results, and good agreement was achieved. The effectiveness factor for the reaction rates was used to express the effect of diffusion limitation within the porous catalyst particle. The effectiveness factor was determined for a wide range of operational parameters, including a temperature range of 800-1300 K and a steam-to-methane ratio of 1-5. The analysis was performed for spherical catalyst particles with diameters up to 3.42 mm, and the effectiveness factor as a function of catalyst particle diameter, temperature, and steam-to-methane ratio was established. The results show that the effectiveness factor is inversely proportional to the diameter of the catalyst particle and that an increase in reaction temperature and steam-to-methane ratio leads to an increase in diffusion limitation. The limitations of the analysis are discussed and justified. The final expression for the effectiveness factor can be used in a pseudo-homogeneous steam methane reformer model where the effectiveness factor varies depending on the position in the packed bed.
引用
收藏
页数:11
相关论文
共 50 条
  • [41] High Performance of a Structured Ni-Based Catalyst for Autothermal Dry Reforming of Methane
    Dwiratna, Bralin
    Hirao, Kazuaki
    Watanabe, Ryo
    Fukuhara, Choji
    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2020, 53 (07) : 304 - 312
  • [42] CO2 Reforming of Methane over Fe-Modified Ni-Based Catalyst for Syngas Production
    Wang, Peipei
    Jin, Lijun
    Hu, Haoquan
    ENERGY TECHNOLOGY, 2020, 8 (08)
  • [43] Hydrogen production by steam reforming of acetic acid over Ni-based catalysts
    Thaicharoensutcharittham, Somsak
    Meeyoo, Vissanu
    Kitiyanan, Boonyarach
    Rangsunvigit, Pramoch
    Rirksomboon, Thirasak
    CATALYSIS TODAY, 2011, 164 (01) : 257 - 261
  • [44] Steam reforming of ethylene glycol over Ni-based catalysts: the effect of K
    Dong Hyuck Choi
    Jung Eun Park
    Dong Ha Kim
    Eun Duck Park
    Research on Chemical Intermediates, 2016, 42 : 223 - 235
  • [45] Steam reforming of ethylene glycol over Ni-based catalysts: the effect of K
    Choi, Dong Hyuck
    Park, Jung Eun
    Kim, Dong Ha
    Park, Eun Duck
    RESEARCH ON CHEMICAL INTERMEDIATES, 2016, 42 (01) : 223 - 235
  • [46] Methane Steam Reforming Over Ni/NiAl2O4 Catalyst: The Effect of Steam-to-Methane Ratio
    C. Sprung
    B. Arstad
    U. Olsbye
    Topics in Catalysis, 2011, 54
  • [47] Steam reforming of methane over Ni/SiO2 catalyst with enhanced coke resistance at low steam to methane ratio
    Zhang, Yao
    Wang, Wei
    Wang, Zongyuan
    Zhou, Xintong
    Wang, Zhao
    Liu, Chang-Jun
    CATALYSIS TODAY, 2015, 256 : 130 - 136
  • [48] Methane Steam Reforming Over Ni/NiAl2O4 Catalyst: The Effect of Steam-to-Methane Ratio
    Sprung, C.
    Arstad, B.
    Olsbye, U.
    TOPICS IN CATALYSIS, 2011, 54 (16-18) : 1063 - 1069
  • [49] Combined steam and CO2 2 reforming of methane over Ni-based catalysts with spherical porous structure
    Park, Hyung Jin
    Son, Ye Sub
    Min, Gwan Hong
    Lee, Sunghoon
    Baek, Il Hyun
    Nam, Sung Chan
    Jang, Jong Tak
    Lee, Ki Bong
    FUEL, 2024, 375
  • [50] CO2-Rich reforming of methane over Ni-based catalysts
    Zhang, Jun
    Sun, Yuhan
    Yuan, Changkun
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2017, 253