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Simulation and experiments on the drying outcome of drying drums

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Abstract

In order to research the drying efficiency of a rotary dryer, a three-dimensional simulation model of roller is built. The temperature distribution in the dryer is simulation modeled using Fluent code, and the simulation result is contrastively analyzed by a thermal imaging test. Using the material curtain distribution location and uniformity as evaluation parameters, EDEM studies the impact of the dryer’s internal structural parameters and the production parameters on the material curtain distribution characteristics. A contrast experiment is conducted to obtain the optimized structural parameters and production parameters of a rotary dryer.

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Abbreviations

G1 :

yield of the drying drum

C1 :

moisture content of dry basis of initial material

C2 :

moisture content of dry basis of product

W1 :

water content of initial material

W2 :

water content of product

Gc :

amount of dry material

G0 :

feed rate of sands

W:

rate of evaporation

Q1 :

heat quantity of evaporating water in wet material

Q2 :

heat quantity of heating up material

Q3 :

thermal energy loss through system

Q:

total heat required

q:

latent heat of vaporization

Cs :

specific heat capacity of steam

T2 :

flue gas temperature

Cw :

specific heat capacity of water

tm1 :

feed temperature

Gc :

dry material amount

Cm :

specific heat capacity of dry material

tm2 :

discharge temperature

m1,2 :

equivalent mass of particle

I1,2 :

equivalent rotational inertia of particle

s:

radius of gyration

un :

normal displacement of particle

us :

tangential displacement of particle

θ :

rotation angle of particle

Fn :

normal force acting on particle

Fs :

tangential force acting on particle

M:

external torque

Kn :

normal elasticity coefficient

Ks :

tangential elasticity coefficient

cn :

normal damping coefficient

cs :

tangential damping coefficient

μ :

friction coefficient between particles

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Authors and Affiliations

  1. College of Mechanical Engineering and Automation, Huaqiao University, Xiamen, 361-021, China

    Sijia Chen & Jianhong Yang

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  1. Sijia Chen
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  2. Jianhong Yang
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Correspondence to Jianhong Yang.

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Chen, S., Yang, J. Simulation and experiments on the drying outcome of drying drums. Int. J. Precis. Eng. Manuf. 17, 109–117 (2016). https://doi.org/10.1007/s12541-016-0014-z

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  • DOI: https://doi.org/10.1007/s12541-016-0014-z

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