Journal of engineering physics

, Volume 39, Issue 1, pp 721–726 | Cite as

Kinetics of the removal of liquid from capillaryporous bodies in a fluidized bed under nonisotherma l conditions

  • E. N. Prozorov
Article
  • 12 Downloads

Abstract

A theory of mass transfer in capillary-porous bodies is proposed which allows for thermogradient transfer of a bound substance in liquid form. The results obtained are used to calculate the process of drying of ceramic articles in a fluidized bed.

Keywords

Mass Transfer Statistical Physic Liquid Form Ceramic Article 

Notation

t, T

temperature

am

coefficient of moisture conductivity

ρ, η, σ

density, viscosity, and surface tension of liquid

h

thickness of liquid film

n

disjoining pressure

A

Hamaker constant

α

coefficient of external mass exchange

α1

coefficient of heat transfer

λ

coefficient of thermal conductivity

Fo

Fourier number

ω

volumetric moisture content of porous body

Ws

surface moisture content of body

n=n1+n2

porosity

r

pore radius in the particles

F= F1+ F2

surface area of porous body

R1, R2

radii of wide and narrow capillaries

ū

moisture content

xo, xoe

coordinates of menisci in wide capillaries and at end of first stage, respectively

Po, Poe

Pressures at surface of body and at end of first stage, respectively

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Copyright information

© Plenum Publishing Corporation 1981

Authors and Affiliations

  • E. N. Prozorov
    • 1
  1. 1.Moscow Institute of Chemical Mechanical EngineeringUSSR

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