2.2 General 2 Separation process
18
2.2.2 Light phase
Twin phase separators only
The light phase flow and thus the concentration of
the light phase are determined by the pressure
difference between the two outlets. With one and
the same throughput a certain pressure
difference will always give the same light phase
flow. With higher counterpressure in the light
phase outlet pipe the light phase concentration
will be higher.
2.2.3 Air penetration / inlet
pressure
A prerequisite for satisfactory separation is that
air is prevented from mixing with the process
liquid.
Air penetration can occur for instance if the
pressure in front of the inlet device is too low or if
the balance vessel suddenly becomes empty.
This can be caused by a careless change-over of
tanks, incorrect dimensions or by changing at the
incorrect time. Even simultaneous filling and
emptying of a tank can result in admixture of air.
Make sure, therefore, that the inlet pressure is
kept at the recommended value and that the
balance vessel is always full. In the vessel, the
liquid should flow gently without bubbling.
Decreased light phase
counterpressure
Increased light phase
counterpressure
➞
➞
lower concentration
higher concentration
G0699721
A. Light phase
B. Heavy phase
G0699811
To Next Page
Loading...
Need help?
General
