Abstract
In the packed column with a novel internal, which is made of several structured porous passages, gas is divided into two branches which meet liquid in countercurrent and cross-current, respectively, so the excessive pressure drop and “flooding” of conventional gas−liquid countercurrent flow can be avoided. A model for predicting dynamic liquid holdup is presented, and it shows a satisfactory agreement with the experimental results. Below the load point, only the superficial liquid velocity and the volume fraction of the internals have evident effects on the liquid holdup. Above the load point, both superficial gas and liquid velocities have great effects on the liquid holdup and so do the parameters of the internal because they can affect gas-flow behavior.
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