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Differential Pressure Turbo Expander Generator Natural Gas Steam Expander

Differential Pressure Turbo Expander Generator Natural Gas Steam Expander

Differential Pressure Turbo Expander Generator Natural Gas Steam Expander

Product Details:

Place of Origin: China
Brand Name: QIYAO
Certification: ISO
Model Number: LTE series

Payment & Shipping Terms:

Minimum Order Quantity: 1 set
Price: Customized Product, Quoted Case By Case
Packaging Details: Seaworthy packing
Delivery Time: 90 - 120 days
Payment Terms: T/T, L/C
Supply Ability: 2000 sets per year
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Detailed Product Description
Function: Convert Residual Pressure Energy Into Electric Power Application: Refinery, Chemical, Metallurgy Industries, Etc.
Customised Design: Available Service: Design, Manufacture & Supply With Technical Supervision
Packing: Seaworthy Packing
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Steam Differential Pressure Turbo-Expander Generator Set


In recent years, increasingly greater importance is attached to energy saving and efficiency improvement in oil refining, chemical, metallurgy, steel and other industries. As one of the critical measures for energy saving and consumption reduction, industrial waste heat & pressure recovery has important social and economic benefit. For the purpose of process flow depressure in the industrial systems, usually throttle valve is used, but the depressure process by throttle valve will inevitably cause such problems as energy loss, increased power consumption, cavitation damage, reduced product ratio and etc.


The Steam Differential Pressure Turbo-Expander Generator Set developed by SMDERI is an efficient energy saving device to replace the temperature and pressure reducer in the steam network of industrial systems. Taking advantage of the steam pressure difference, it drives the turbo-expander to realize almost isentropic depressuring process and recovers the residual pressure energy of steam to generate power to obtain substantial comprehensive benefit in energy saving and consumption reduction.


* Work principle/process

All HP steam entering the volute will evenly distribute the working medium to the nozzle ring along the flow channels inside the volute. After the nozzle, the working medium obtains acceleration and converts the pressure energy into kinetic energy and then it flows to the impeller radially. When the impeller performs external work, the pressure energy and kinetic energy are converted into the kinetic energy of rotor to drive it to run at high speed.


With work effect produced by almost isentropic expansion process of HP steam in the turbine, the steam differential pressure turbo-expander converts the energy contained in the HP steam into mechanical energy and delivers it through the main shaft so as to fulfill the residual pressure recovery.



Differential Pressure Turbo Expander Generator Natural Gas Steam ExpanderDifferential Pressure Turbo Expander Generator Natural Gas Steam Expander


* Components

No. Item Description
1 Turbo-expander Rotor (impeller, main shaft)
Shaft seal
2 Gear box Large gear ratio type
3 Generator synchronous/asynchronous generator
4 Lube oil system Forced oil supply lubrication system consisting of oil station and oil piping. The oil station is made up of oil tank, cooler, filter, separator, valves and etc.
5 Measuring system

Vibration sensor

Temperature sensor

Pressure sensor

Rotation speed sensor

6 Control system DCS/PLC
* Parameters
Model Inlet pressure Outlet pressure Flow rate Output
ST-HHP 5.0~6.0 MPa 4.0~5.0 MPa 20 t/h 300~500 kW
ST-HP 3.8~4.4 MPa 1.6~2.2MPa 80t/h 2500~4800kW
ST-MP 2.0~3.4 MPa 1.0~1.7 MPa 50t/h 2000~2400kW
ST-LP 0.8~1.2 MPa 0.4~0.6 MPa 30 t/h 800~1400 kW
ST-LLP 0.4~0.6 MPa 0.2~0.3 MPa 20 t/h 700~900 kW




* Advantages

  1. Customized design;
  2. Designed with turbine thermal calculation optimization method and full 3D viscous aerodynamic calculation;
  3. Design optimized with computational fluid dynamics (CFD) and finite element analysis;
  4. Advanced reliability analysis technology;
  5. The main shaft of steam differential pressure turbine integrates with the high speed shaft of gearbox and results in compact size and better economic performance.


Contact Details
Shanghai Marine Diesel Engine Research Institute

Contact Person: Mrs. Tan Ling

Tel: 86-21-51151156

Fax: 86-21-51711742

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