Turboexpander unit
The law of conservation of energy, also known as the “First Law of Thermodynamics” states: energy cannot be created or destroyed – it only passes from one type to another in various physical processes
What is a Turboexpander?
In accordance with the First Law of Thermodynamics, the turbo expander converts the internal energy of compressed gas into mechanical energy with a decrease in its temperature. In other words, a turbo expander is a dynamic expansion impeller machine, in which the adiabatic expansion of the gas flow occurs with the implementation of external mechanical work. The expansion of the gas with the removal of energy leads to a decrease in the pressure and temperature of the gas.
It is due to the perfect operation of the work that the turbo expander provides much lower gas outlet temperatures at the same pressure drop compared to the throttle. Considering the large power capacity on the shaft, depending on the customer’s requirements, we offer turboexpanders with a compressor load – ADKG series, or a generator – DGA series.
The principle of operation of turboexpandersThe processed gas, under high pressure, enters the inlet nozzle to the working blades of the expansion turbine, omparting a part of its kinetic energy and providing a torque to the blades. The working blades transmit the torque through the turbine disk to the shaft. Thus, the gas passes from the high-pressure area through the turbine to the low-pressure area, while expanding and accelerating. As a result of this process, the gas loses its temperature and generates mechanical rotation energy, which is used to rotate the generator or compressor located with it on the same shaft. The exhaust gas is discharged through an outlet diffuser. |
|
| Area | Process | Product |
|---|---|---|
| Preparation of gas for transport | Low temperature separation (LTC), fractional condensation separation (FCS) | Dry Gas, ethane |
| Associated Pressurized Gas (APG) utilization | NGL, LPG (C3, C4), dry gas | |
| Condesate production | Condensed Gas | |
| Ethane recovery | Ethane | |
| LNG production | Low temperature separation (LTC) | LNG |
| Cooling | ||
| Olefin recovery | Dehydrogenation | Ethylene, olefins |
| Area | Process | Product |
|---|---|---|
| Catalytic cracking | Recovery – Use of heat and residual pressure | Electrical energy |
| Pressure reduction in hydraulic fracturing and ERM | ||
| Geothermal energy | Recovery – Heat utilization
(cycle-ORC) |
|
| Utilization of excess industrial heat |
-
ADKG-5
Designed specifically for low flow rates and based on the reliable and successful ADKG-10 series — an ideal opportunity to fully utilize the available resources.
Up to 5 MM m³/h
Up to -170°С
Up to 13.5 MPa
Magnetic suspension
-
ADKG-10
The benchmark solution in its segment with proven performance and reliability for low and medium flow rates. It is the quintessence of our years of experience.- Up to 5 MM m³/h
- Up to -170°С
- Up to 13.5 MPa
- Magnetic suspension
-
ADKG-20
A balanced solution for medium and large flow rates, combining a proven design with increased productivity.- Up to 20 MM m³/h
- Up to -170°С
- Up to 13.5 MPa
- Magnetic suspension
-
ADKG-40
It is a natural development of ADKG-20, inheriting our proven solutions and the necessary modifications to work with high flow rates.- Up to 40 MM m³/h
- Up to -170°С
- Up to 13,5 MPa
- Magnetic suspension