The choice of internal depends on the required duty.
Some of the options include:
A combination can also be used, such as:
wiremesh + swirltubes (in SMS)
wiremesh + swirltubes + wiremesh (in SMSM)
vertical-flow vane + swirltubes (in SVS)
- filter candles + vane pack or wiremesh (in two-stage filter separator)
Selection depends on the required efficiency, capacity, turndown, maximum allowable pressure drop and fouling tolerance.