Agitated‐pulsed column (APC) is a newly designed extraction column with excellent mass transfer performance. In this work, Sauter mean drop diameter d32 and drop size distribution was investigated under different operation conditions in a 25 mm diameter APC. The results show that with an increase in pulsation intensity and agitation speed the drop size distribution is narrowed and d32 is decreased significantly. With increasing dispersed‐phase velocity, d32 increased and drop size distribution become narrow, while there was no noticeable change with continuous velocity. The cumulative size distribution was found to be predicted well using the Inverse Gaussian function. A new correlation was proposed to predict the experimental d32 data of the APC column used in this study. Furthermore, population balance model was applied to predict the drop size distribution with refitted parameters in the breakage, coalescence kernels functions.
The agitated‐pulsed column (APC) is expected to exhibit good transfer. The dispersed‐phase holdup and characteristic velocity were measured using a 25‐mm diameter APC. The holdup declined at first and then escalated with the increase of pulsation intensity which was in contrary to the trend of the characteristic velocity change. The pulsation intensity corresponding to minimum holdup was found, and it increased with higher agitation speed. The interfacial area was also calculated. Correlations were developed for the holdup and characteristic velocity prediction within 5.34 % and 9.54 % deviation, respectively. Flooding lines were calculated by the characteristic velocity method and operating regimes were determined by the experimental results.
Here,
we present a strategy for rapid measurement of gas solubility
in ionic liquids based on a simple configuration of tube-in-tube reactor.
Ionic liquids can be rapidly saturated without direct contact of gas
and liquid via a semipermeable Teflon AF-2400 inner tubing in the
reactor, and the gas solubility can be easily determined by a steady-state
flux balance of both gas and liquid flowing into the reactor. Solubility
data of gaseous carbon dioxide (CO2), ethylene (C2H4), and ethane (C2H6) in several
ionic liquids ([Emim][NTf2], [Omim][NTf2], [Bmim][BF4], [Bmim][PF6], and [Omim][NTf2]) were
successfully determined at temperatures between 30 °C and 60
°C and low pressure (no higher than 8 bar), showing less than
8% deviation, compared with the literature values. A single gas solubility
data point can be obtained within 10 min, showing high efficiency
compared with conventional methods (5–48 h). Finally, the application
scope and limitations of this method were discussed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.