IRIS Inline rotary separators
Liquids are separated and extracted ahead of flow meters in gas transmission lines. IRIS rotary separators can also scrub gases at compressor inlets and provide liquid and gas separation for applications where power recovery is not needed. Smaller, lighter and lower total installed cost separation systems can be
realized.
Flange
Size
(in) |
Flange
Rating
(psig) |
Config. |
Pressure
Rating
(psi) |
Dim. "A"
(in) |
Dim. "B"
(in) |
Weight
(Lbs.) |
Figure |
| 1.5 |
600 |
Vertical |
1350 |
20.8 |
33.0 |
295 |
B |
| 3 |
600 |
Horizontal |
1350 |
13.4 |
12.0 |
175 |
A |
| 6 |
600 |
Horizontal |
1350 |
25.9 |
18.25 |
900 |
A |
| 6 |
900 |
Horizontal |
2025 |
26.3 |
19.25 |
1115 |
A |
Applications and Operating Range
The IRIS unit has exhibited separation efficiencies of 99.5% in field installations on raw well flow. It operates reliably over a wide range of flows and transient conditions. Pressure differential ranges from 0.5 to five percent of inlet pressure.
Gas streams containing up to 30 percent liquid weight can be treated. The compact size and self-powered operation characteristics of the IRIS unit allow for new and retrofit installation into any scrubber application.
Service applications include:
- Gas compressor suction and discharge
- Gas metering station liquid and solids removal
- Mobile well test and
proving unit
- Gas outlet of a conventional separator (second-stage scrubber)
- Gas turbine fuel gas
treatment
- Removing bottlenecks from existing scrubbers
 Gas Field Installation
The three-inch, 600-pound IRIS unit shown (at right) is installed on the sales gas line of a gas gathering plant. The unit receives dehydrated gas through a four-inch (100 mm), 600-pound line, and delivers the clean gas to the sales gas line upstream of the sales compressors. The unit is operating at approximately 300 psig (20.7 bar) inlet pressure, with a flow rate up to 5 MMSCFD (5,900 Sm3/hr). The gas is sweet and is at-near ambient temperature. Liquid loading is 0.1- 0.5 BPD and is comprised of 75-percent condensate and 25-percent water/glycol mix. The unit operates at a 5-8 psi (0.6 bar) pressure drop, with greater than 99.99% total liquid separation efficiency. Outlet gas contains less than 0.1 USG/MMSCF (<0.04L/thousand Sm3).
Typical operating speed for the three-inch IRIS is 4,000-12,000 RPM using self-lubricated bearings.
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