Flue Gas Expander
Harness Waste Heat, Generate Power, and Slash Operating Costs
We specialize in high-efficiency Flue Gas Expanders (FGE), the core component for energy recovery in refinery Fluid Catalytic Cracking (FCC) units. Our advanced YL-series turbines transform high-pressure, high-temperature waste flue gas into valuable mechanical energy, significantly reducing your plant’s energy consumption and carbon footprint while delivering a substantial return on investment.
For about 30 years, our FGEs have been the trusted choice for refineries worldwide, combining robust engineering with cutting-edge technology to ensure maximum reliability and performance in the most demanding conditions.
Product Overview & Applications
A Flue Gas Expander is a critical turbine used in FCC units. It captures the energy from hot, pressurized waste flue gas—a byproduct of the catalytic cracking process—and converts it into useful work. This energy is typically used to drive the main air blower compressor or an electric generator, directly reducing the external power required by the facility.
Our systems are engineered for integration into various energy recovery configurations, including:
- Tri-Trains:Expander + Main Air Blower + Motor/Generator
- Quad-Trains:Expander + Main Air Blower + Steam Turbine + Motor/Generator
- Power Generation Trains:Expander + Generator
YL-Series Flue Gas Expander: Technical Specifications
Our YL-series offers a comprehensive range of models to match the specific needs of your FCC unit.
| Parameter | Specification Range |
| Power Output | 2,000 – 35,000 kW |
| Inlet Gas Temperature | 500 – 700 °C |
| Inlet Gas Pressure | 0.2 – 0.4 MPa(a) |
| Flue Gas Flow Rate | 600 – 7,500 Nm³/min |
| Expander Stages | Single-Stage & Two-Stage |
| Casing Configuration | Top Exhaust & Bottom Exhaust |
Why Choose Our Flue Gas Expanders?
- Unmatched Efficiency & Performance
- Proven High Efficiency:Achieve adiabatic efficiency of ≥83% for single-stage and ≥86% for two-stage models, maximizing your energy recovery.
- Full Intellectual Property:Our proprietary design philosophy, developed over decades, is optimized for the harsh realities of FCC operation.
- Superior Engineering & Robust Design
- Advanced Rotor Dynamics:Features a rigid rotor design for exceptional stability and smooth operation, minimizing vibration.
- Thermal Management:A semi-rigid casing with guided expansion effectively handles thermal stresses and external pipeline loads.
- Optimized Layout:Vertical split casing and an overhung rotor structure are specifically designed for high-temperature service.
Component Isolation: A unique “cold-hot” component separation design protects sensitive parts from extreme heat.
- Industry-Leading Durability
Premium Wear Protection: We utilize the best-in-class “Great Wall No.1” (plasma-sprayed) and “Great Wall No.33” (detonation-sprayed) wear-resistant coatings. These advanced coatings effectively protect critical components like rotor blades, stator blades, and shroud surfaces from catalyst erosion, dramatically extending service life and reducing maintenance costs.
Your Partner in Energy Recovery
By choosing our Flue Gas Expanders, you are not just buying a piece of equipment—you are investing in a partnership dedicated to optimizing your refinery’s profitability and sustainability. Our technology promotes the application of advanced materials, online monitoring, and diagnostic systems, pushing the entire industry forward.
Ready to unlock significant energy savings for your refinery?
Contact Us Today for a Quote
We encourage you to reach out with your specific FCC unit parameters. Our engineering team is ready to provide a detailed technical proposal and a competitive quotation tailored to your energy recovery goals.
