Abstract
The problem of the hydraulic characteristics of a packed tower operating under counter-current flow conditions has been studied both theoretically and experimentally; the analysis leading to the conclusion that the hydraulic resistance of a tower operating normally is most accurately given by the sum of the pressure drop through the packing under “wet-drained” conditions and a term representing the resistance due to the moving liquid stream.
The results, which are presented mainly in graphical form, lead finally to a three-dimensional graph having axes of liquid rate, gas velocity, and pressure drop—these being the principal variables of the problem. This graph is believed to be both original and of practical interest.
Various other factors governing the operation of a tower have been discussed and the problem of “hold-up” has been treated in some detail, since it is of importance in some aspects of the treatment of the problem of towers working under counter-current flow conditions.
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