The Turbo-Expander System by Gaztron Engineering Pvt. Ltd. is an advanced solution for air expansion and cooling, essential for high-efficiency cryogenic applications. This system comprises two turbo-expander units, braking compressors with after-coolers, and dedicated oil supply devices, ensuring reliable and precise operation. It leverages clean air from the molecular sieve absorber for pressurization, expansion, and rectification, supporting seamless air separation and liquefaction processes.
Key Components and Operational Workflow of the Turbo-Expander System:
-
Turbo-Expander Units:
The system features two high-performance turbo-expanders designed to expand compressed air efficiently. This process significantly reduces the air temperature, enabling it to reach cryogenic conditions suitable for rectification and separation.
-
Braking Compressors with After-Coolers:
- Braking Compressors: The clean air from the molecular sieve absorber enters the braking compressors, consuming the work generated by the turbo-expanders while simultaneously being pressurized.
- After-Coolers: The pressurized air from the braking compressors is cooled to approximately 40°C using two after-coolers. This step ensures optimal thermal conditions for downstream processes.
-
Main Heat Exchanger:
After cooling in the after-coolers, the boosted air enters the main heat exchanger, where it is further cooled to 165 K. This ultra-low temperature is critical for effective air expansion and rectification in the cryogenic columns.
-
Air Expansion and Cooling:
- Expansion: The cooled air is directed into the turbo-expander, where it undergoes rapid expansion, further reducing its temperature.
- Final Cooling: The expanded air exits the turbo-expander and re-enters the heat exchanger for additional cooling before being sent to the upper rectification column.
-
Air Distribution for Rectification:
- Upper Column: Expanded and cooled air is supplied to the upper rectification column for separation and purification.
- Lower Column: The remaining air bypasses the turbo-expander and is directly sent to the main heat exchanger for cooling to its dew point (~100 K) before entering the lower rectification column.
Technical Specifications:
- Turbo-Expander Units: Dual high-efficiency turbines
- Air Cooling: ~40°C in after-coolers
- Heat Exchanger Cooling: 165 K for expanded air; 100 K dew point for bypass air
- Rectification Columns: Upper and lower columns for air separation
- System Components: Turbo-expanders, braking compressors, after-coolers, main heat exchangers, oil supply devices
Benefits of Gaztron’s Turbo-Expander System:
- Enhanced Efficiency: Optimal air cooling and expansion for improved cryogenic process performance.
- Advanced Cooling Technology: Two-stage cooling with after-coolers and heat exchangers ensures precise thermal control.
- Reliable Operation: High-quality turbo-expander units and braking compressors deliver consistent performance.
- Cryogenic Applications: Ideal for air separation units, liquefaction processes, and other industrial applications requiring cryogenic air processing.
_|_Gaztron_Engineering.jpeg)
