Phmr. Cramers et al., HYDRODYNAMICS AND LOCAL MASS-TRANSFER CHARACTERISTICS OF GAS-LIQUID EJECTORS, Chemical engineering journal and the biochemical engineering journal, 53(1), 1993, pp. 67-73
The hydrodynamics and mass transfer characteristics of a straight tube
ejector have been investigated. From the experiments it can be conclu
ded that two different hydrodynamic zones exist in the ejector. In the
first zone, the ''mixing shock'' region, extremely high k(L)a values
are obtained. In the remaining part of the ejector volume a fine and h
omogeneous bubble flow appears in which the mass transfer rate is lowe
r. These observations indicate that for a proper design of gas-liquid
ejectors the ejector should be considered as a system of two units in
series, requiring separate modelling. Further, it has been shown that
the presence of a swirl device in the upstream section of the nozzle h
as a significant effect on the hydrodynamics and mass transfer perform
ance of ejectors.