This kind of internal is commonly used to separate a liquid-liquid
mix exploiting the different densities of the two liquids. They
are often used in many three-phase separators where the flow is
composed by gaseous phase, heavy liquid phase (ex. water) and light
liquid phase (ex.: oil).
The plate pack coalescer is composed by canals between long parallel
plates at a fixed angle. Passing through this canals with correct
velocity is possible to obtain the separation of the light phase(for
ex. oil) and the heavy phase (for example water). At the exit of
the pack the light liquid is placed above the heavy phase and can
be separated using a weir (see the scheme).
samples in our workshop and a rendering of different models of calming
Comparing with a common gravity separator the main advantagies are:
- smaller separated droplets with higher efficiency of separation
- reduction of the dimensions of the vessel because with this coalescer
is possible to obtain the same separation in a shorter space
- decreasing of residence time in the vessel with an important increasing
of the production.