Natural circulation boiler with one or two drums, which can be supplied either as suspended units supported by steel structures or as self-supporting units.

The steam generation section is composed of a membrane wall furnace and a convection bank of plain tubes.

The superheating section consists of two superheater modules, designed to balance radiation and convection heat transfer, ensuring greater stability of final steam temperature.

The Bubbling Fluidized Bed represents the latest generation of this system, with a fully open bottom that allows removal of foreign elements such as stones, metallic residues, and others.

The bed temperature is controlled without the need for immersed heat transfer surfaces, achieved through combustion air management and flue gas recirculation.

Typically, heat recovery equipment includes a water heater, such as a plain-tube economizer, and combustion air preheaters.

Due to its combustion efficiency above 99.5% and the consequent absence of unburned carbon, equipment such as Electrostatic Precipitators and bag filters can be applied directly, without the need for pre-collectors, ensuring final particulate emissions below 50 mg/Nm³.