[1] Huang Kai, Lin Sheng, Zhou Jiancheng,. Numerical simulation of diffusion processfor oxidative dehydrogenation of butene to butadiene [J]. Journal of Southeast University (English Edition), 2015, 31 (4): 572-576. [doi:10.3969/j.issn.1003-7985.2015.04.024]

Copy

Numerical simulation of diffusion processfor oxidative dehydrogenation of butene to butadiene()

Share：

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

31

Issue:

2015 4

Page:

572-576

Research Field:

Chemistry and Chemical Engineering

Publishing date:

2015-12-30

Info

Title:

Numerical simulation of diffusion processfor oxidative dehydrogenation of butene to butadiene

Author(s):

Huang Kai;  Lin Sheng;  Zhou Jiancheng

School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China

Keywords:

multi-scale model;  mass and heat transfer;  particle diameter;  oxidative dehydrogenation of butene to butadiene;  single particle model;  transfer resistance

PACS:

TQ015.9

DOI:

10.3969/j.issn.1003-7985.2015.04.024

Abstract:

A comprehensive single particle model which includes the mesoscale and microscale models was developed to study the influence of particle diameter on mass and heat transfer occurring within a ferrite catalyst during the oxidative dehydrogenation of butene to butadiene process. The verified model can be used to investigate the influence of catalyst diameter on the flow distribution inside the particle. The simulation results demonstrate that the mass fraction gradients of all species, temperature gradient and pressure gradient increase with the increase of the particle diameter. It means that there is a high intraparticle transfer resistance and strong diffusion when applying the large catalysts. The external particle mass transfer resistance is nearly constant under different particle diameters so that the effect of particle diameter at external diffusion can be ignored. A large particle diameter can lead to a high surface temperature, which indicates the external heat transfer resistance. Moreover, the selectivity of reaction may be changed with a variety of particle diameters so that choosing appropriate particle size can enhance the production of butadiene and optimize the reaction process.

References:

[1] Park J H, Row K, Shin C H. Oxidative dehydrogenation of 1-butene to1, 3-butadiene over BiFe_0.65Ni_xxMo oxide catalysts: effect of nickel content [J]. Catalysis Communications, 2013, 31(10): 76-80.
[2] Ji C J, Kim H, Choi A S, et al. Effect of pH in the preparation of γ-Bi₂MoO₆ for oxidative dehydrogenation of n-butene to 1, 3-butadiene: correlation between catalytic performance and oxygen mobility of γ-Bi₂MoO₆[J]. Catalysis Communications, 2007, 8(3): 625-628.
[3] Cortés I, Rubio O, Herguido J, et al. Kinetics under dynamic conditions of the oxidative dehydrogenation of butane with doped V/MgO [J]. Catalysis Today, 2004, 91-92: 281-284.
[4] Lee H, Jung J C, Kim H, et al. Preparation of ZnFe₂O₄ catalysts by a co-precipitation method using aqueous buffer solution and their catalytic activity for oxidative dehydrogenation of n-butene to 1, 3-butadiene [J]. Catalysis Letters, 2008, 122(3/4): 281-286.
[5] Yin Y G, Xu W Q, DeGuzman R, et al. Studies of stability and reactivity of synthetic cryptomelane-like manganese oxide octahedral molecular sieves [J]. Inorganic Chemistry, 1994, 33(19): 4384-4389.
[6] Lee H, Jung J C, Song I K. Oxidative dehydrogenation of n-Butene to 1, 3-butadiene over sulfated ZnFe₂O₄ catalyst [J]. Catalysis Letters, 2009, 133(3/4): 321-327.
[7] Solsvik J, Jakobsen H A. Modeling of multicomponent mass diffusion in porous spherical pellets: application to steam methane reforming and methanol synthesis [J]. Chemical Engineering Science, 2011, 66(9): 1986-2000.
[8] Ding X J, Xiao D L, Wang X L, et al. The redox model of the kinetics for the oxidative dehydrogenation over the ferrite catalyst [J]. Journal of Molecular Catalysis, 1988, 2(1): 25-30.(in Chinese)
[9] Liu G Z. F-90 ferrite fixed bed catalyst for oxidative dehydrogenation of n-Butene to butadiene [J]. China Synthetic Rubber Industry, 1991, 14(3): 179-182.(in Chinese)
[10] Jin Y, Yu Q Q, Xu X Q, et al. The effect of intraparticle diffusion on the oxidative dehydrogenation of butane-1 over Fe-Mg-Zn [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 1986, 2: 29-36.(in Chinese)
[11] Jin Y, Yu Q Q, He X C, et al. The effect of intraparticle diffusion on the deep dehydrogenation of butadiene over Fe-Mg-Zn [J]. Environmental Science, 1986, 7(1): 2-7.(in Chinese)
[12] Weidenfeller B, Hofer M, Schilling F R. Thermal conductivity, thermal diffusivity, and specific heat capacity of particle filled polypropylene [J]. Composites Part A: Applied Science and Manufacturing, 2004, 35(4): 423-429.

Memo

Memo:

Biography: Huang Kai(1973—), male, doctor, associate professor, huangk@seu.edu.cn.
Foundation items: The National Science Foundation of China(No.21576049, 21576050), the Fundamental Research Funds for the Central Universities(No. 2242014K10025).
Citation: Huang Kai, Lin Sheng, Zhou Jiancheng. Numerical simulation of diffusion process for oxidative dehydrogenation of butene to butadiene[J].Journal of Southeast University(English Edition), 2015, 31(4):572-576.[doi:10.3969/j.issn.1003-7985.2015.04.024]

Common functions