Ash handling systems

The Challenge

The cost of producing energy from biomass is very much dependent on efficient handling of the various types of biomass available and the efficiency of each process. The burning process generates ash with high temperatures. This ash (either bottom or fly ash) needs to be cooled and/or processed to a form that can be transported from the plant.

The solution

ANDRITZ has complete solutions for biomass boiler ash handling. The scope of supply can vary from complete plants to individual equipment delivery. ANDRITZ has a depth of experience in project management, ensuring reliable deliveries and excellent economic results for customers.

Bottom and fly ash handling

• Bottom ash cooling screw
• Ash conveyors
• Bottom ash screen for sand recycling
• Ash container
• Fly ash cooling screw
• Pneumatic conveying systems
• Fly ash silo
• Dry and wet discharging systems

ANDRITZ ash handling systems include conveyors and other equipment necessary for removal of bottom ash and fly ash from the power boiler. Water-cooled screws or chain conveyors can be adapted easily for different furnace configurations and for any type of solid fuel being combusted. The system also includes sand handling, including the recycling of sand back to the boiler.

Features of the ash handling system

• Wide capacity range
• Wide cooling range
• High uptime with rugged, proven design