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Modellierung isothermer Festbettadsorber
Author(s) -
Richter Ekkehard,
Knoblauch Karl,
Jüntgen Harald
Publication year - 1978
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.330500806
Subject(s) - isothermal process , adsorption , knudsen diffusion , diffusion , knudsen number , thermodynamics , porosity , materials science , porous medium , mass transfer , chemistry , chromatography , physics , composite material
Abstract Modelling of isothermal fixed bed adsorbers . The effective adsorption velocity in porous solids is determined primarily by the adsorption equilibrium coupled with bulk diffusion, Knudsen diffusion, and surface diffusion in the particles. Adsorption and mass transport may follow different mechanisms for different combinations of gaseous (fluid) and solid phases and for different pore size distributions. For the industrially important cases models were developed and discussed for isothermal fixed bed adsorbers. The balances of the different models show different mathematical structures, so that different mathematical evaluation methods are necessary for determination of the breakthrough curve. Computed results of the models are discussed. The evaluation of the breakthrough curves is needed for parameter estimation from laboratory scale experiments and for the design of industrial adsorbers with known parameters.