Bubbling Fluidized-Bed Boilers

Rayonier Fernandina Plant

With an experience base of more than 200 BFB units worldwide, B&W’s BFB boilers are helping the world realize the promise of clean energy from a wide variety of fuels.

Our BFB boilers are designed to allow a wide range of fuels to be burned, separately or in combination. The ability to utilize various fuel sources and types provides owners with the flexibility to take advantage of opportunity fuels and control fuel costs. This is necessary because fuel properties vary widely. For example, biomass fuels have a wide range of moisture and heating values depending upon their source and the time of year.

BFB boilers can also be an integral component of the world’s decarbonization efforts. By combining traditional bioenergy production, such as B&W’s bubbling fluidized-bed boilers, with carbon capture and sequestration technologies, energy can be produced with a net-negative carbon intensity (CI) output. Read more about our BECCS capabilities.

B&W’s advantage

B&W’s bubbling fluidized-bed boiler is designed with reliability in mind. Several features combine to provide low maintenance costs, high availability and long-term reliability:

Incorporated in our design are these features to reduce maintenance costs:

BFB BOTTOM HOPPER FURFACE

Open bottom furnace – results in complete debris removal with lower capital costs and maintenance expenses.

Underbed ash removal system – consists of bottom-supported hoppers which isolate the bubbling bed foundation and steel from the boiler steel. This design is considered an advantage and facilitates retrofitting an existing top-supported unit to a BFB.

Bubble cap and air distribution system design – allows removal of large tramp material while durable construction rarely requires replacement.