Magaldi solution for

The Magaldi Ecobelt® FA is a mechanical conveyor designed for handling fly ash from the hoppers located along the flue gas path, including economizer (ECO), selective catalytic reactor (SCR), air heaters (AH), and electrostatic precipitator (ESP) or baghouse.

The Magaldi Ecobelt® FA, installed under each row of collection hoppers, continuously receives ash from the hoppers, that are therefore normally empty. Furthermore, the hoppers can be provided with enlarged outlet cross-section, up to 7 times, allowing a smooth mass flow discharge. Mechanical conveying on the enclosed Magaldi Superbelt®, at low speed without friction between ash and metal parts, means minimum wear, low power consumption, high reliability, dust containment, and provisions for emergency stop and restart of the conveyor full of ash. Ash is in this way continuously transported to a local transfer silo (typically, 100÷1,000 m3 capacity) for truck loading or further transportation to final storage silos.

Depending on the specific power plant arrangement, transportation from local silo to final storage silos can be either mechanical, with the Magaldi Ecobelt® FA, or pneumatic. The mechanical solution is advisable, for maximum power savings and O&M cost reductions, in case final storage silos are located close to the boiler area and there are no lay-out restrictions. When that is not feasible, the Magaldi Ecobelt® FA can be associated with a pneumatic transportation from local to final silos, offering the benefits of a mechanical transportation linked to a single, simpler and low power demand pneumatic conveying system.

Ecobelt® FA Advantages

• Continuous fly ash extraction, resulting in hoppers normally empty. Increase of the ash hoppers outlet cross-section.
• Reduction of blockage risks due to hoppers choking or bridging, even after a long storage period.
• Reduction of auxiliary power consumption, leading to coal and CO2 emission savings.
• O&M cost reduction.
• Capability to restart the conveyor full of ash.