Supported by a steel structure and designed with one or two drums, the IR-CFB boilers are suitable both for high calorific value fuels and for fuels with high combustion difficulty.

In these boilers, the combustion process takes place in a Circulating Fluidized Bed of inert material, where NOx and SOx gaseous emissions are effectively controlled.

B&W’s exclusive design features a primary U-beam separator installed inside the furnace, responsible for returning more than 97% of the circulating material to the furnace bottom.

Approximately 2.5% of the total circulating material is captured externally by a multi-cyclone inertial collector and subsequently returned to the furnace.