Gas Reciprocating Compressors

Applications

  • Gas treatment (separation, dehydration, desulfurization, CO2 removal)
  • Gas gathering and transportation systems
  • Gas reinjection, gas lift
  • Vapor recovery units
  • Compressors of LNG plants
  • Dry process compressor
  • CNG fueling stations

Horizontally-opposed, open-crankcase COMPEX reciprocating compressors are designed for the compression of various gases up to 60 MPa. The compressors are available in two-, four- and six-throw versions with piston force ranging from 3.5 to 17 tons. Depending on application and gas suction and discharge parameters compressors can be manufactured with 1 to 7 stages.

Process media

  • Natural gas
  • Associated petroleum gas with high H2S and CO2 contents
  • Nitrogen, helium, hydrogen and other process gases
  • Methane, ethane, propane-butane mixtures
  • Heavy petroleum and refinery gases
  • Coal-bed methane

Technical parameters

Suction pressure from atmospheric to 35 MPa
Discharge pressure up to 60 MPa
Gas flow up to 200 m³/min (and more)
Motor power from 37 kW to 2.5 MW
Cylinders and seals cooling liquid (antifreeze)
Inter-stage cooling air or liquid cooling

Horizontally-opposed reciprocating compressors

Parameter /
 Compressor Model
С3,5С7С9С11С13С17
Number of throws up to 6 up to 4 up to 6 up to 6 up to 6 up to 4
Power Consumption, kW up to 500 up to 720 up to 1000 up to 1540 up to 1900 up to 2500
Piston Stroke, mm up to 110 up to 115 up to 120 up to 127 up to 140 up to 160
Velocity, rpm 600/ 1500 600/ 1500 600/ 1500 600/ 1500 500/ 1200 375/ 1100
Piston Speed, m/sec 3,67/ 5,01 3,83/ 5,75 3,94/ 6,02 3,97/ 6,14 4,01/ 6,28 4,11/ 6,44
Total rod load, tons 3,5 7 9 11 13 17
Discharge Pressure, MPa 60 60 50 50 40 40
Weight, kg* 1800* 4500* 7000* 9950* 14000* 18000*

* To be specified by a project engineer

Compressor SkidDry skids
Designation (first figure denotes number of throws)
Nominal power
Nominal speed
Lubricated skids
Designation (first figure denotes number of throws)
Nominal power
Nominal speed
C3,5
up to 60 MPa
2С3,5
200 kW
600 rpm
4С3,5
340 kW
6000 rpm
6С3,5
500 kW
600 rpm
2С3,5
200 kW
1500 rpm
4С3,5
350 kW
1500 rpm
6С3,5
500 kW
1500rpm
C7
up to 60 MPa
2С7
420 kW
600 rpm
4С7
600 kW
600 rpm
6С7
720 kW
600 rpm
2С7
420 kW
1500 rpm
4С7
600 kW
1500 rpm
6С7
720 kW
1500 rpm
C9
up to 50 MPa
2С9
600 kW
600 rpm
4С9
800 kW
600 rpm
6С9
1000 kW
600 rpm
2С9
600 kW
1500 rpm
4С9
800 kW
1500 rpm
6С9
1000 kW
1500 rpm
C11
up to 50 MPa
2С11
760 kW
600 rpm
4С11
1150 kW
600 rpm
6С11
1540 kW
600 rpm
2С11
760 kW
1500 rpm
4С11
1150 kW
1200 rpm
6С11
1540 kW
1200 rpm
C13
up to 40 MPa
2С13
900 kW
600 rpm
4С13
1400 kW
600 rpm
6С13
1900 kW
500 rpm
2С13
900 kW
1200 rpm
4С13
1400 kW
1200 rpm
6С13
1900 kW
1200 rpm
C17
up to 40 MPa
2С17
1600 kW
400 rpm
4С17
2000 kW
400 rpm
6С17
2500 kW
375 rpm
2С17
1600 kW
1100 rpm
4С17
2000 kW
1100 rpm
6С17
2500 kW
1000 rpm
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