We offer fully customizable solutions for expanders. All technical parameters — including design temperature, working pressure, flow rate, rotational speed, impeller size, material selection, sealing type, drive configuration, and more — can be flexibly engineered and manufactured to match your specific operating conditions and process requirements. With our experienced technical team, we can tailor standard or non‑standard expanders to perfectly integrate with your system, ensuring high efficiency, stable performance, and reliable operation.
The following data and case studies are based on actual projects carried out in collaboration with various clients. They are provided for reference purposes only. For custom non‑standard solutions, please feel free to contact us at any time.
Booster Brake
Expander System – Hot & Cold Ends
Provides refrigeration for cryogenic processes such as air separation, natural gas liquefaction, hydrocarbon recovery, industrial tail gas recovery, and ethylene cold boxes.
Suitable gases include air, nitrogen, hydrogen, natural gas, and other hydrocarbon gases.
Flow rate: 4,000 ~ 126,500 Nm³/h (up to 126,500 Nm³/h for air separation units).
Pressure range: 0.2 ~ 10 MPa.
Temperature range: -260 °C ~ 200 °C.
Expander efficiency: up to 93%.
Power: up to 5,000 kW.
Shaft speed: 10,000 ~ 100,000 rpm.
Impeller size: 60 ~ 800 mm (integral forged closed impeller).
2‑to‑1 Complete Skid with Instrumentation & Control
High‑Temperature Expander System
Model: PLPN‑230/26.88‑4.5
Type: High‑temperature turboexpander / High‑temperature booster
Medium: Dry nitrogen
Flow rate (0°C, 101.325 kPa): 13,800 Nm³/h (expander) / 25,500 Nm³/h (booster)
Inlet pressure: 2.788 MPa(A) (expander) / 2.8 MPa(A) (booster)
Inlet temperature: 253.0 K (expander) / 313.0 K (booster)
Outlet pressure: 0.553 MPa(A) (expander) / 3.82 MPa(A) (booster)
Outlet temperature: 170.2 K (expander) / 345.1 K (booster)
Isentropic efficiency: 85% (expander) / 75% (booster)
Flow regulation range: 80‑120% (both)
Power: 321.49 kW (expander) / 296.12 kW (booster)
Impeller diameter: 130 mm (expander) / 120 mm (booster)
Rotational speed: 42,850 r/min (both)
Low‑Temperature Expander System
Model: PLPN‑311/48.5‑4.5
Low‑Temperature Turboexpander System
Type: Low‑temperature expander / Low‑temperature booster
Medium: Dry nitrogen
Flow rate (0°C, 101.325 kPa): 18,660 Nm³/h (expander) / 25,500 Nm³/h (booster)
Inlet pressure: 4.95 MPa(A) (expander) / 3.795 MPa(A) (booster)
Inlet temperature: 167.5 K (expander) / 313.0 K (booster)
Outlet pressure: 0.55 MPa(A) (expander) / 4.975 MPa(A) (booster)
Outlet temperature: 95.2 K (expander) / 346.4 K (booster)
Isentropic efficiency: 82% (expander) / 76% (booster)
Flow regulation range: 80‑120% (both)
Power: 330.55 kW (expander) / 309.21 kW (booster)
Impeller diameter: 120 mm (expander) / 123 mm (booster)
Rotational speed: 37,830 r/min (both)
2‑in‑1 Integrated Skid (without Instrumentation & Control)
Expander System
Model: PLPK‑320/9.3‑0.42
Type: Turboexpander / Expander / Booster
Medium: Air
Flow rate: 19,200 Nm³/h (all)
Inlet pressure: 1.03 MPa(A) (expander) / 0.64 MPa(A) (booster)
Inlet temperature: 171.3 K (expander) / 288.0 K (booster)
Outlet pressure: 0.142 MPa(A) (expander) / 1.053 MPa(A) (booster)
Outlet temperature: 105.1 K (expander) / 343.6 K (booster)
Isentropic efficiency: 88% (expander) / 80% (booster)
Flow regulation range: 75‑125% (all)
Power: 426.5 kW (expander) / 385.83 kW (booster)
Impeller diameter: 240 mm (expander) / 263 mm (booster)
Rotational speed: 20,190 r/min (all)
2‑to‑1 Separate Skid (without Instrumentation & Control)
Expander System
Model: PLPK‑320/9.3‑0.42
Type: Turboexpander / Expander / Booster
Medium: Dry air
Flow rate: 9,500 Nm³/h (all)
Inlet pressure: 0.837 MPa(A) (expander) / 0.535 MPa(A) (booster)
Inlet temperature: 173.5 K (expander) / 290.15 K (booster)
Outlet pressure: 0.128 MPa(A) (expander) / 0.86 MPa(A) (booster)
Outlet temperature: 109.5 K (expander) / 344.0 K (booster)
Isentropic efficiency: 87% (expander) / 78% (booster)
Flow regulation range: 80‑120% (all)
Power: 207.44 kW (expander) / 185.07 kW (booster)
Impeller diameter: 180 mm (expander) / 198 mm (booster)
Rotational speed: 26,690 r/min (all)
1‑to‑1 Integrated Skid with Instrumentation & Control
Expander System – Model PLPK‑574.17/54.95‑5.53
Type: Turboexpander / Booster
Medium: Air
Flow rate: 34,450 Nm³/h (expander) / 34,450 Nm³/h (booster)
Inlet pressure: 5.595 MPa(A) (expander) / 5.595 MPa(A) (booster)
Inlet temperature: 196.1 K (expander) / 196.1 K (booster)
Outlet pressure: 0.653 MPa(A) (expander) / 0.653 MPa(A) (booster)
Outlet temperature: 111.0 K (expander) / 111.0 K (booster)
Isentropic efficiency: 85% (expander) / 85% (booster)
Flow regulation range: 80‑120% (both)
Power: 794.66 kW (expander) / 794.66 kW (booster)
Impeller diameter: 160 mm (expander) / 160 mm (booster)
Rotational speed: 31,190 r/min (both)
1‑to‑1 Integrated Skid (without Instrumentation & Control)
Turboexpander / Booster System
Expander:
Medium: Dry air
Flow rate: 45,000 Nm³/h
Inlet pressure: 4.525 MPa(A)
Inlet temperature: 168.0 K
Outlet pressure: 0.53 MPa(A)
Outlet temperature: 98.0 K
Isentropic efficiency: 84%
Flow regulation range: 80‑120%
Power: 820.72 kW
Impeller diameter: 180 mm
Rotational speed: 24,820 r/min
Booster:
Medium: Dry air
Flow rate: 69,000 Nm³/h
Inlet pressure: 3.5 MPa(A)
Inlet temperature: 313.0 K
Outlet pressure: 4.555 MPa(A)
Outlet temperature: 344.6 K
Isentropic efficiency: 77%
Flow regulation range: 80‑120%
Power: 794.47 kW
Impeller diameter: 180 mm
Rotational speed: 24,820 r/min
1‑to‑1 Separate Skid (without Instrumentation & Control)
Expander System
Type: Turboexpander / Expander / Booster
Medium: Dry air
Flow rate: 9,000 Nm³/h (both expander and booster)
Inlet pressure: 0.7 MPa(A) (expander) / 0.49 MPa(A) (booster)
Inlet temperature: 149.1 K (expander) / 290.0 K (booster)
Outlet pressure: 0.119 MPa(A) (expander) / 0.72 MPa(A) (booster)
Outlet temperature: 98.4 K (expander) / 333.1 K (booster)
Isentropic efficiency: 87% (expander) / 78% (booster)
Flow regulation range: 80‑120% (both)
Power: 159.79 kW (expander) / 140.2 kW (booster)
Impeller diameter: 180 mm (expander) / 198 mm (booster)
Rotational speed: 24,080 r/min (both)
Fan Brake
2‑to‑1 Integrated Skid with Instrumentation & Control
Expander System – Model PLPK‑208.415/0.899‑0.295
Turboexpander (medium: waste nitrogen, composition: 49.76% N₂, 48.1% O₂, 2.14% Ar):
Flow rate (0°C, 101.325 kPa): 12,504.9 Nm³/h
Inlet pressure: 0.1854 MPa(A)
Inlet temperature: 124.5 K
Outlet pressure: 0.125 MPa(A)
Outlet temperature: 112.9 K
Isentropic efficiency: 86%
Flow regulation range: 80‑120%
Power: 50.06 kW
Impeller diameter: 360 mm
Rotational speed: 5,870 r/min
Fan (medium: air):
Flow rate (0°C, 101.325 kPa): ≥ 7,000 Nm³/h
Inlet pressure: 0.0955 MPa(A)
Inlet temperature: 288.0 K
Outlet pressure: 0.105 MPa(A)
Outlet temperature: 301.2 K
Isentropic efficiency: 60%
Flow regulation range: 80‑120%
Power: 33.28 kW
Impeller diameter: 400 mm
Rotational speed: 5,870 r/min
2‑to‑1 Integrated Skid (without Instrumentation & Control)
Expander – Model PLPK‑208.415/0.899‑0.295
Type: Turboexpander
Medium: Air
Flow rate (0°C, 101.325 kPa): 3,000 Nm³/h
Inlet pressure: 0.755 MPa(A)
Inlet temperature: 122.0 K
Outlet pressure: 0.397 MPa(A)
Outlet temperature: 104.1 K
Isentropic efficiency: 80%
Flow regulation range: 80‑120%
Power: 16.1 kW
Impeller diameter: 90 mm
Rotational speed: 25,070 r/min
2‑to‑1 Separate Skid (without Instrumentation & Control)
Expander – Model PLPK‑208.415/0.899‑0.295
Type: Turboexpander
Medium: Air
Flow rate (0°C, 101.325 kPa): 6,000 Nm³/h
Inlet pressure: 0.223 MPa(A)
Inlet temperature: 120.0 K
Outlet pressure: 0.132 MPa(A)
Outlet temperature: 105.4 K
Isentropic efficiency: 85%
Flow regulation range: 80‑120%
Power: 29.84 kW
Impeller diameter: 220 mm
Rotational speed: 10,600 r/min
1‑to‑1 Integrated Skid with Instrumentation & Control
Expander – Model PLPK‑208.415/0.899‑0.295
Type: Turboexpander
Medium: Waste nitrogen
Flow rate (0°C, 101.325 kPa): 6,735 Nm³/h
Inlet pressure: 0.5239 MPa(A)
Inlet temperature: 128.0 K
Outlet pressure: 0.13 MPa(A)
Outlet temperature: 90.6 K
Isentropic efficiency: 85%
Flow regulation range: 80‑120%
Power: 82.01 kW
Impeller diameter: 160 mm
Rotational speed: 21,220 r/min
Oil Brake
Expander System – Technical Overview
Provides refrigeration for cryogenic processes such as air separation, natural gas liquefaction, hydrocarbon recovery, industrial tail gas recovery, and ethylene cold boxes.
Gases include air, nitrogen, hydrogen, natural gas, and other hydrocarbon gases.
Flow rate: 3,000 ~ 30,000 Nm³/h.
Pressure range: 0.1 ~ 8 MPa.
Temperature range: -260 ~ 200 °C.
Expander efficiency: up to 90%.
Power: up to 120 kW.
Shaft speed: 5,000 ~ 15,000 rpm.
Impeller size: 60 ~ 800 mm (integral forged closed impeller).
2‑to‑1 Integrated Skid with Instrumentation & Control
Expander – Model PLPK‑208.415/0.899‑0.295
Type: Turboexpander
Medium: Waste nitrogen (65.95% N₂, 32.85% O₂, 1.2% Ar)
Flow rate: 3,650 Nm³/h
Inlet pressure: 0.51 MPa(A)
Inlet temperature: 132.0 K
Outlet pressure: 0.12 MPa(A)
Outlet temperature: 92.1 K
Isentropic efficiency: 85%
Flow regulation range: 70‑130%
Power: 48.08 kW
Impeller diameter: 140 mm
Rotational speed: 26,640 r/min
1‑to‑1 Integrated Skid with Instrumentation & Control
Expander – Model PLPK‑208.415/0.899‑0.295
Type: Turboexpander
Medium: 46.9% N₂, 50.9% O₂, 2.2% Ar
Flow rate: 9,000 Nm³/h
Inlet pressure: 0.22 MPa(A)
Inlet temperature: 126.4 K
Outlet pressure: 0.122 MPa(A)
Outlet temperature: 108.9 K
Isentropic efficiency: 87%
Flow regulation range: 70‑100%
Power: 53.34 kW
Impeller diameter: 260 mm
Rotational speed: 9,700 r/min
Generator Brake
Generator Brake System – Technical Overview
Single‑stage and multi‑stage configurations available.
Recovers and generates electricity from differential pressure, compressed air energy storage (CAES), and other energy transmission processes.
Medium gases: air, nitrogen, hydrogen, natural gas, and other gases.
Flow rate: 4,000 ~ 800,000 Nm³/h.
Pressure range: 0.6 ~ 14 MPa.
Temperature range: -100 ~ 200 °C.
Expander efficiency: up to 85%.
Power generation: 100 ~ 5,000 kW.
Rotational speed: 5,000 ~ 40,000 rpm.
Impeller size: 80 ~ 600 mm (integral forged closed impeller).
1‑to‑1 Separate Skid (without Instrumentation & Control)
Turbo‑generator Unit
Type: Turboexpander
Medium: Air
Flow rate (0°C, 101.325 kPa): 7,000 Nm³/h
Inlet pressure: 0.6076 MPa(A)
Inlet temperature: 123.6 K
Outlet pressure: 0.153 MPa(A)
Outlet temperature: 88.1 K
Isentropic efficiency: 84%
Braking method: Generator brake
Expander speed: 16,000 r/min
Motor speed: 1,510 r/min
Output voltage: 400 V
Motor power: 100 kW