What fan blade design is most effective in preventing erosion from flyash particles in flue gas?

The most effective fan blade design for preventing erosion from flyash particles in flue gas is the radial straight blade design. This design features blades that extend outward from the center of the fan and are typically oriented at a straight angle relative to the flow of gas.

This configuration allows for a more robust structure that can withstand the impact of abrasive particles, such as flyash, traveling at high velocities within the flue gas. Additionally, radial straight blades are less prone to buildup of ash, as the design aids in keeping the airflow directed efficiently without allowing particles to settle or accumulate on the blades.

The other designs may be less effective in this scenario—curved blades, for instance, can sometimes create areas where particles can accumulate, increasing the potential for erosion. Similarly, airfoil blades are designed for aerodynamic efficiency and may not be as durable against abrasive materials. Axial flow blades may also not provide the same level of protection against erosion as radial blades due to their orientation and the way they interact with particulate matter in the gas stream.