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Kriterien für die Auswahl und die Auslegung von Gas/Flüssigkeits‐Reaktoren
Author(s) -
Nagel Otto,
Hegner Bernd,
Kürten Heribert
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.330501208
Subject(s) - volume (thermodynamics) , mass transfer , yield (engineering) , residence time distribution , thermodynamics , residence time (fluid dynamics) , chemistry , process engineering , nuclear engineering , continuous stirred tank reactor , mixing (physics) , mechanics , materials science , analytical chemistry (journal) , chromatography , engineering , physics , inclusion (mineral) , geotechnical engineering , quantum mechanics
Abstract Criteria for the choice and design of gas/liquid reactors . The mass transfer area in a given reactor volume can be varied over several orders of magnitude by the choice of operating parameters. The way in which the volume‐specific conversion can be altered by variation of the volume‐specific mass transfer area depends upon the rate of the chemical reaction. The greater the volume‐specific mass transfer area chosen, the more power is required per unit reactor volume. Analysis shows that not only the attainable conversion but also the yield can be greatly influenced by the volume‐specific mass transfer area. This applies both to parallel and to consecutive reactions. In the case of consecutive reactions, the liquid retention time must also be included as a parameter in yield determination. If a reactor system requires economic optimization, then, in addition to the yield, the power required for mixing and the investments in reactor volume are also of importance. All three parameters can be modified by means of quantities accessible to the engineer, such as gas throughput, specific power dissipation, and residence time. The quantitative relations depend upon reactor type. The relation between these parameters can be plotted quantitatively in a working diagram for each reactor type. Its plotting and use in reactor optimization on the bases of laboratory experiments are considered.