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Probleme der Modellbildung bei technischen Festbettreaktoren
Author(s) -
Eigenberger Gerhart,
Ruppel Wilhelm
Publication year - 1985
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.330570302
Subject(s) - heat transfer , packed bed , mass transfer , bundle , mechanics , flow (mathematics) , nuclear engineering , mechanical engineering , materials science , engineering , chemical engineering , physics , composite material
Problems and potential of mathematical modelling for industrial fixed‐bed reactors . Modelling and computer simulation for the purpose of design and operation of industrial fixed‐bed reactors are discussed with the aid of examples. Emphasis is placed upon difficulties and problems arising from the adequate model formulation. The following aspects are discussed in some detail: (1) The influence of heat and mass transport in the catalyst pellet, especially with complex reaction. (2) The relations between radial heat transfer and radial flow profile and its influence upon the axial temperature profile in packed tubes with or without heat generation by reaction. (3) The modelling of activity‐variations along the packed bed during the lifetime of a catalyst. (4) The scale‐up problem of multitubular fixed‐bed reactors, i.e. the problem of achieving and maintaining equal operating conditions inside and outside all the tubes of the bundle.