The flue gas ash conveying system is an integral part of waste-to-energy (WtE) plants. It is responsible for managing and transporting the ash residue that results from flue gas cleaning processes. Here’s an overview of its components and functionality:
Purpose
The system primarily handles:
- Fly Ash: A fine particulate material captured from flue gas during incineration.
- Residue from Flue Gas Treatment: This may include dust, lime, activated carbon, and other materials used for pollution control.
Key Components
- Ash Collection Hoppers:
- Positioned under electrostatic precipitators, fabric filters, or baghouses.
- Collect the ash and other particulates removed from flue gas.
- Conveying Equipment:
- Pneumatic Conveyors: Often used to transport ash over long distances using air pressure or vacuum systems.
- Screw Conveyors: Ideal for short-distance transport, commonly used for handling ash under hoppers.
- Chain Conveyors: Robust systems that transport heavy ash residue.
- Storage Silos:
- Store fly ash for further handling or disposal.
- Equipped with level sensors, unloading systems, and dust suppression devices.
- Conditioning Units:
- Mix ash with water or binding agents to minimize dust and stabilize it for safe transport and disposal.
- Discharge Systems:
- Load the conditioned ash onto trucks or transfer it for further treatment.
Environmental Considerations
- Dust Suppression: Essential to prevent air pollution during ash handling.
- Compliance with Standards: The system must meet environmental regulations, such as controlling heavy metals and other contaminants in ash.
- Residue Recycling: In some cases, ash can be processed to extract valuable metals or used in construction materials.
Would you like more details about specific components, design considerations, or innovations in flue gas ash handling?
Post time: Jan-24-2025