Page 90 - Petroleum and Gas Field Processing

Figure 16 Products obtained from a three-phase GOSP.

It will automatically open or close, allowing more or less gas to flow out
of the separator to maintain a fixed pressure inside the separator.

Pressure Relief Valve
The pressure relief valve (PRV) is a safety device that will automatically
open to vent the separator if the pressure inside the separator exceeded the
design safe limit.

Mist Extractor

The function of the mist extractor is to remove the very fine liquid
droplets from the gas before it exits the separator. Several types of mist
extractors are available:
1. Wire-Mesh Mist Extractor: These are made of finely woven
stainless-steel wire wrapped into a tightly packed cylinder of
about 6 in. thickness. The liquid droplets that did not separate in
the gravity settling section of the separator coalesce on the
surface of the matted wire, allowing liquid-free gas to exit
the separator. As the droplets size grows, they fall down into the
liquid phase. Provided that the gas velocity is reasonably low,

Copyright 2003 by Marcel Dekker, Inc. All Rights Reserved.