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Centrifugal Compressors with Vertically Split Casing

Compressor system
4GC2-218/3-18

Depending on required compression degree the centrifugal compressors with vertically split casing may have one or more compression stages, wherein each stage consists of an aerodynamic unit (“inner casing"), placed inside a steel cylinder. The aerodynamic unit, in its turn, consists of a rotor and a stationary flow path in form of horizontally split diaphragms.

The basic models can be modified in accordance with the customer requirements.

DESIGN FEATURES & ADVANTAGES

  • A vertically split casing allows fabrication of high-pressure compressors for explosive gases
  • Flow path with high-performance compression stages
  • Special locks securing solid forged caps that cover the ends of the steel cylinder, provide quick and easy maintenance and repair of the compressor
  • Dry gas seals to provide complete purity of compressed gas and prevent its leakage into compressor room
  • Active magnetic bearings for the rotor suspension
  • Intercooling of compressed gas between sections in the two-stage casings
  • Automation system based on microprocessor controller
  • Many years of operation in real conditions have proven high reliability and efficiency of the construction components

INSTALLATION

  • Version for compressor stations (placement inside the permanent building)
  • Hangar version with all engineering systems (easily construction buildings)
  • Block-container version with all engineering systems
  • Marine version including offshore platforms
  • Version for outdoor installation in open air areas

Construction Materials

  • Ductile cast iron
  • Carbon steel
  • Stainless steel
  • Titanium

Drive Types

  • Electric motor
  • Gas turbine
  • Steam turbine

SCOPE OF SUPPLY

  • Compression system (compressor, multiplier, base frame, couplings, piping)
  • Electric motor (gas turbine drive, gas piston drive, steam turbine)
  • Lubricating oil systems and seals
  • Anti-surge protection system
  • Automatic control system

Model

Compressible gas

Capacity
m3/min
(Nm3/h)

Pressure
MPa (bar)

Rotation speed, rpm

Drive

Dimensions, m

Weight including
el. motor, automation, piping, spare parts, kg

Application

Suction

Discharge

Type

Power, kW

2GC2-41/58-79

Hydrogen-bearing gas

41
(142000)

5.7
(58)

7.75
(79)

13020

El. motor

2500

6.20х4.80х3.40

38000

Oil refining.
Hydrotreatment units

2GC2-47/35-44М

Hydrogen-bearing gas

46
(96000)

3.4
(34.7)

4.24
(43.3)

14750

El. motor

2000

6.00х6.50х3.50

44000

Gas processing.
Gasoline fraction hydrotreatment unit

2GC2-23/21-37

Natural gas

23
(26500)

2.06
(21)

3.63
(37)

13902

El. motor

1250

6.00х2.50х2.50

19000

Oil refining. Hydrocracking units

2GC2-16/27-37

Hydrogen-bearing gas

16
(26000)

2.64
(27)

3.62
(37)

12700

El. motor

800

6.20х4.80х3.40

20000

Petroleum chemistry

2GC2-14/25-40

Natural gas

14
(20000)

2.32
(23.6)

3.92
(40)

13165

El. motor

800

5.23х2.41х2.00

20000

Petroleum chemistry. Catalytic cracking units

Model

Compressible gas

Capacity
m3/min
(nm3/h)

Pressure
MPa (bar)

Rotation speed, rpm

Drive

Dimensions, m

Weight including
el. motor, automation, piping, spare parts, kg

Application

Suction

Discharge

Type

Power, kW

3GC2-83/25-48

Associated petroleum gas

83
(125000)

2.45
(25)

4.7
(48)

11100

El. motor

4000

9.20х7.40х4.40

58000

Gas processing

3GC2-61/41-59

Hydrogen-bearing gas

61
(150000)

4.0
(41)

5.78
(59)

13200

El. motor

4000

7.50х6.50х3.60

32000

Petroleum chemistry. Hydrotreatment units

3GC2-36/132-168

Hydrogen-bearing gas

36
(290000)

13
(132.6)

16.47
(167.9)

11619

El. motor

4000

10.20х8.10х6.98

60000

Oil refining. Hydrocracking units

3GC2-75/71-88

Hydrogen-bearing gas

75
(320000)

7.1
(71)

8.8
(88)

11938

Steam turbine

3500

12.60х10.00х8.50

78400

Petroleum chemistry. Gas circulation system

3GC2-123/4-25

Natural gas

123
(30000)

0.4
(4)

2.45
(25)

14674

El. motor

3150

7.70х7.80х4.50

39500

Thermal energy. Supply of compressed gas to gas turbine energy unit

3GC2-112/5-23-К

Natural gas

112
(34000)

0.5
(5.11)

2.3
(23.47)

13116

El. motor

3150

10.70х8.45х5.70

46700

Thermal energy. Supply of compressed gas to gas turbine energy unit

32GC2-63/4.5-41

Hydrogen-bearing gas

62
(16500)

0.44
(4.5)

4.1
(41)

13557

El. motor

3150

8.30х2.30х2.36

46000

Oil refining.
Hydrogen production

3GC2-174/1.2-17

Wet (sour) associated petroleum gas

174
(12500)

0.12
(1.2)

1.7
(17)

9000÷12150

El. motor

2500

6.50х6.60х3.80

29000

Oil refining

32GC-115/2-38-К

Associated petroleum gas with hydrogen sulphide

115
(14000)

0.2
(2)

3.73
(38)

13500

El. motor

2500

15.00х12.00х7.00

120000

Gas processing

3GC2-84/11-26-К

Natural gas

84
(65000)

1.0÷1.2
(11.2÷13.5)

2.5
(26.53)

13006

El. motor

2500

9.50х7.50х4.50**

75000

Thermal energy. Supply of compressed gas to gas turbine of combined cycle power unit

32GC2-52/2-29 М3.1

Natural gas

52
(6000)

0.2
(2.0)

2.84
(29)

14107

El. motor

2500

10.50х4.50х3.50

56000

Offshore production platforms.
Supply of compressed gas to gas turbine

3GC2-46/6-35 М3.1

Natural gas

46
(16500)

0.6
(6.0)

3.43
(35)

13911

El. motor

2000

7.30х3.65х3.17

27000

Offshore production platforms

3GC2-62/4-26

Associated petroleum gas

62
(15000)

0.39
(4)

2.53
(26)

13051

El. motor

1600

8.00х2.20х1.95

42000

Oil refining

3GC2-40/9.7-29-К

Natural gas

40
(23300)

0.95
(9.7)

2.9
(29)

12136

El. motor

1600

9.50х7.50х4.50**

60000

Thermal energy.
Supply of compressed gas to gas turbine power unit

3GC2-38/9.5-28 К

Natural gas

37
(21000)

0.93
(9.5)

2.74
(28)

11544

El. motor

1600

12.00х9.00х4.50

6000

Thermal energy.
Supply of compressed gas to combustor in gas turbine power unit

3GC-108/0.92-7

Dry chlorine-gas

108
(6000)

0.09
(0.92)

0.68
(7)

12253

El. motor

630

4.30х2.30х1.50

15600

Chemical industry. Production of chlorine and caustic soda

** dimensions without block-container CA

Model

Compressible gas

Capacity
m3/min
(nm3/h)

Pressure
MPa (bar)

Rotation speed,
rpm

Drive

Dimensions, m

Weight
including
el. motor, automation, piping, spare parts, kg

Application

Suction

Discharge

Type

Power,
KW

433GC2-143/25-321PМ

Nitrogen-hydrogen mixture

143
(215000)

2,45
(25)

31,5
(321)

11268

Steam turbine

32000

88,00х34,00х21,20

790000

Chemical industry.
Ammonia synthesis unit

4GC2-109/18-76

Dry stripped APG

120
(120000)

1,62
(16,5)

7,45
(76)

11419

El. motor 

12500

12,42х6,85х4,35

58600

Gas processing. Supply of compressed gas to main pipeline

4GC2-184/13,5-76

Dry stripped gas

190
(155000)

1,32
(13,5)

7,45
(76)

10363

El. motor 

12000

2,25х1,41х1,63*

14050

Gas processing

4GC2-184/13,5-76 М1

Feed APG

195
(155000)

1,27
(12,95)

7,45
(76)

10363

El. motor 

12000

2,25х1,41х1,63*

14050

Gas processing

4GC2-124/14-79 GTU

Dry stripped gas

124
(100000)

1,36
(14)

7,69
(9)

8059

Gas turbine plant (AI-336-2-8)

8000

21,80х20,40х33,00

240000

Gas processing

4GC2-318/2,4-29

Fuel gas

318
(45000)

0,23
(2,42)

2,83
(28,86)

10561

El. motor 

6300

9,23х9,04х5,18

68000

Thermal energy. 
Supply of compressed gas to combustion chambers of gas turbines

4GC2-230/24-31

Hydrogen-bearing gas

242
(350000)

2,33
(23,8)

3,03
(31)

10092

El. motor 

6300

10,01х9,35х6,88

63500

Gas processing. Catalytic reforming unit

4GC2-130/6-65

Natural gas

130
(45000)

0,56
(5,7)

6,48
(66)

8796

El. motor 

6300

9,23х7,10х5,89

75450

Gas processing. Liquid hydrocarbon stabilization unit

43GC-6,3/110

APG

100
(35000)

0,57
(5,7)

11,2
(112)

9480

El. motor 

6300

36,00х12,00х11,00

158600

Upstream. As a part of compressor systems for gas-lift oil extraction

43GC-6,3/90

APG

100
(30000)

0,48
(4,9)

8,82
(90)

9480

El. motor 

6300

36,00х12,00х11,00

158600

Upstream. As a part of compressor systems for gas-lift oil extraction

4GC2-70/17-62 GTU

Dry stripped gas

70
(70000)

1,7
(17,35)

6,17
(62,9)

8478

Gas turbine (GTU-6PG)

6000

29,00х21,00х20,00

220000

Gas processing. APG utilization

4GC2-218/3-18

Low-pressure waste gas

218
(45000)

0,33 
(3,36)

1,8 
(18,36)

8573

El. motor 

4000

6,80х6,40х3,80

38000

Gas processing. Gas treatment system

4GC2-87/5-35-

Natural gas

87
(36000)

0,5
(5,11÷7,15)

3,5
(36,22)

10541

El. motor 

3150

11,00х8,50х6,00

90000

Thermal energy. 
Gas compression and supply to gas turbine being a part of CCGT

44GC2-49/24-46

Hydrogen

49
(70000)

2,35
(24)

4,5
(46)

10731

El. motor 

3150

12,50х8,20х7,05

59800

Oil refining. Performance support of hydrogen production plant

* Dimensions of compressor system only

Model

Compressible gas

Capacity
m3/min
(nm3/h)

Pressure
MPa (bar)

Rotation speed,
rpm

Drive

Dimensions, m

Weight
including
el. motor, automation, piping, spare parts, kg

Application

Suction

Discharge

Type

Power,
KW

5GC2-300/4,5-64

APG

300
(78000)

0,45
(4,5)

6,27
(64)

6400-9600

GTU-12P (PS-90)

12000

2,90х2,00х2,40

20000

Gas processing

5GC2-420/2,5-45

APG

420
(80000)

0,32 
(3,3)

4,5 
(45,9)

8585

Gas turbine (PS-90)

10000

2,95х2,41х1,82

22500

Gas processing

5CD-208/30-45М

Hydrogen bearing gas

208 
(375000)

2,94
(30)

4,41
(45)

8400

Steam turbine

6020

12,60х10,05х6,76

78400

Chemical industry. petrol catalytic reforming unit

5GC2-216/14-26

Hydrocarbon process gas

196,7÷216,4
(190000)

1,42
(14,5)

2,6
(26,5)

9636÷9892

Steam condensing turbine

4500

12,60х10,00х8,50

78400

Chemical industry

5CD-43/50-64

Hydrogen bearing gas

43
(130000)

4,9
(50)

6,07
(62)

6331

El. motor 

2000

8,75х7,70х6,58

40630

Chemical industry. Diesel hydro-treater

5GC2-310/0,66-5 М3.1

Natural gas

310
(12300)

0,06
(0,66)

0,5
(5)

7415

El. motor 

1600

10,50х3,50х4,00

41000

Chemical industry.  Offshore stationary platforms

Model

Compressible gas

Capacity
m3/min
(nm3/h)

Pressure
MPa (bar)

Rotation speed,
rpm

Drive

Dimensions, m

Weight
including
el. motor, automation, piping, spare parts, kg

Application

Suction

Discharge

Type

Power,
KW

6GC2-375/4-77 GTU

APG

375
(89000)

0,4
(4,08)

7,6
(77,5)

8377

Gas turbine (NK-16-18STD)

18000

33,74х14,15х31,26

423180

Gas processing

66GC-1162/1,3-38 GTU

APG

1162
(88000)

0,12
(1,3)

3,73
(38)

6784

Gas turbine (NK-16STD)

16000

37,80х32,50х30,75

420000

Gas processing

6GC2-260/2-38 GTU

Low pressure APG

256
(30000)

0,19
(1,94)

3,8
(38,76)

8143

Gas turbine (GTD-6,3RM)

6300

25,80х24,00х25,00

220000

Gas processing