Mass Transfer By Diffusion EOLSS（传质扩散 EOLSS）.pdf

CHEMICAL ENGINEERING AND CHEMICAL PROCESS TECHNOLOGY - Vol. I - Mass Transfer By Diffusion - A. Burghardt MASS TRANSFER BY DIFFUSION A. Burghardt Institute of Chemical Engineering, Polish Academy of Sciences, Poland Keywords: Chemical engineering, molecular motion-diffusion, velocities and fluxes of mass transfer, average mixture velocities, Fick’s law of diffusion, binary diffusion coefficient, equivalent forms of Fick’s law of diffusion, diffusion in gases, liquids and polymers, generalized mass balances for multicomponent and binary mixtures, diffusion coupled with forced convection, diffusion coupled with chemical reaction, multicomponent diffusion, generalized Fick’s law, generalized driving force, concentration diffusion, pressure diffusion, forced diffusion, thermal diffusion, multicomponent diffusion coefficients, entropy balance, chemical potential, Maxwell- Stefan relations, Maxwell diffusion coefficient, thermodynamic factor matrix, effective diffusion coefficient, multicomponent equimolar diffusion. S S S Contents L R 1. Introduction O E 2. Velocities and Fluxes of Mass Transfer 3. Binary Diffusion E T 3.1 Fick’s Law of Diffusion P 3.2 Diffusion Coefficients in Gases – 3.3 Diffusion Coefficients in Liquids A 3.4 Diffusion in Polymers 4. Generalized Mass Balances O H 4.1 Continuity Equations for Binary Systems C C 5. Binary Mass Transfer in Stagnant Systems and in Laminar Flow 5.1 Equimolar Counterdiffusion S 5.2 Diffusion Through Stagnant Gas Film E 5.3 Gas Absorption into a Falling Liquid Film E L 5.4 Mass Transfer and Chemical Reaction inside a Poro