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Applications of EMMS Drag in Industry

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From Multiscale Modeling to Meso-Science

Abstract

This chapter reviews the use of the EMMS drag and paradigm to solve industrial problems including the design, optimization and scale-up of the fluid catalytic cracking (FCC) process, and optimization of fluidized bed combustion and Fischer-Tropsch (FT) synthesis. Application of the EMMS drag to these problems in turn aids its development.

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Abbreviations

C d :

Effective drag coefficient for a particle

d b :

Bubble diameter, m

d p :

Particle diameter, m

G s :

Solids flux, kg/m2 s

H d :

Heterogeneity index

K*:

Saturation carrying capacity, kg/m2 s

p :

Pressure, Pa

Q :

Gas volumetric flow rate, m3/s

U :

Superficial velocity (= uε g), m/s

U ck :

Choking gas velocity, m/s

U s :

Superficial slip velocity, m/s

W :

Solids flow rate (kg/s)

x :

Mass fraction of particles

Y :

Mass fraction of gas species

z :

Axial height, m

Rep :

Local superficial Reynolds number (ρ g d p U s/μ g)

α :

Volume fraction

Θ :

Granular temperature, m2/s2

μ :

Viscosity, Pa s

ρ :

Density, kg/m3

b:

Bubble

g:

Gas phase

l:

Liquid phase

p:

Particle

s:

Solid phase

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Authors and Affiliations

  1. Institute of Process Engineering, Chinese Academy of Sciences, Zhongguancun North Second Street 1, Beijing, 100190, People’s Republic of China

    Jinghai Li, Wei Ge, Wei Wang, Ning Yang, Xinhua Liu, Limin Wang, Xianfeng He, Xiaowei Wang, Junwu Wang & Mooson Kwauk

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  1. Jinghai Li
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  2. Wei Ge
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  3. Wei Wang
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  4. Ning Yang
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  5. Xinhua Liu
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  6. Limin Wang
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  7. Xianfeng He
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  8. Xiaowei Wang
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  9. Junwu Wang
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  10. Mooson Kwauk
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Correspondence to Jinghai Li .

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Li, J. et al. (2013). Applications of EMMS Drag in Industry. In: From Multiscale Modeling to Meso-Science. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35189-1_8

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  • DOI: https://doi.org/10.1007/978-3-642-35189-1_8

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  • Print ISBN: 978-3-642-35188-4

  • Online ISBN: 978-3-642-35189-1

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