Rotary vane feeders is commonly used in Ash Handling Plants (AHP) for several reasons:

1. Uniform Feeding: Rotary vane feeders ensure a consistent and uniform feed rate of ash material into the conveying system, which is important for maintaining stable operation of boiler and other equipment in the power plant.
2. Handling Abrasive Materials: AHP deal with abrasive materials like fly ash and bottom ash. Rotary vane feeders are robust and can handle such abrasive materials without excessive wear and tear, ensuring durability and reliability.
3. Sealed Operation: Rotary vane feeders are designed to provide a sealed feeding mechanism, preventing air leakage and dust emissions during material transfer. This helps to maintain a clean and safe working environment.
4. Controlled Discharge: The design of rotary vane feeders allows for precise control over the discharge rate of ash material, enabling operators to adjust the feeding rate as needed to match the requirements of downstream processes or equipment.
5. Versatility: Rotary vane feeders can handle a wide range of particle sizes and densities, making them versatile for use in various ash handling applications within the AHP.