Our patented GSG™ Graduated Straightening Grid devices are engineered to enhance velocity and flow, minimizing erosion issues and extending catalyst life. The GSG system was designed using advanced computational modeling and integrates turning vanes with a straightening grid into a single, sloped structure. By significantly increasing the number of turning elements, the design minimizes flow disruption and ensures smooth, continuous turns with minimal detachment and recirculation, issues commonly associated with large turning vanes.
AIR POLLUTION CONTROL
GSG™ Graduated Straightening Grid
Enhancing velocity and flow while minimizing erosion issues
Benefits and Features
- Improves velocity distribution and flow direction
- Reduces dust accumulation, erosion and uneven catalyst loading
- Extends catalyst life
- Suitable for use throughout the power plant from economizers to air heaters
- Removes the need for remodeling and retuning of multiple vanes
Protects the system when operating under non-optimal conditions
GSG systems offer the added benefit of being far less sensitive to upstream flow variations when compared with traditional solutions. This ensures that both the catalyst and its performance remain protected. This resilience is particularly advantageous when the unit is not operating under optimal design conditions, such as during economizer bypass, or if future changes are made to the boiler or ductwork. This simple design removes the need for remodeling and retuning multiple vanes when there are changes in the upstream flow distribution.
Comparison of velocity statistics: GSG versus traditional tuning vanes
| GSG | Traditional tuning vanes | |
| Within 10% of average | 62% of velocities | 95% of velocities |
| Within 20% of average | 93% of velocities | 100% of velocities |
Supporting our customers to maximize efficiencies
Contact Fuel Tech today to learn how our Graduated Straightening Grids could help your organization enhance velocity and flow, minimizing erosion issues and extending catalyst life.