PERVAPORATION PROCESS AND APPARATUS FOR CARRYING OUT SAME

摘要

The invention is directed to a pervaporation processes as well as to apparatuses for carrying out such processes. More in particular, the present invention is directed to improvements in pervaporation processes by improving mass transfer.
According to the present invention the feed stream for a pervaporation process contains vapour and liquid. An apparatus for carrying out the process according to the invention comprises a boiler for evaporating a fraction of a liquid stream whereby a vapour stream can be obtained, a duct for combining the remaining liquid stream and said vapour to a mixture and for feeding said mixture to a pervaporation unit, which pervaporation unit comprises a membrane and a vacuum pump which is connected to the room that is on the permeate side of the membrane.
The membrane can be a tubular-shaped membrane with slug-flow realized in the lumen.
The membrane further can comprise a catalyst.