Bubbling Fluidized-Bed Boilers

Bubbling Fluidized-Bed (BFB) Boilers

B&W’s 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.

B&W’s advantage

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

  • An open bottom design permits easy removal of oversized or foreign material.
  • A water-cooled, gas-tight lower furnace eliminates the potential for gas leaks caused from refractory damage.
  • Bottom-supported hoppers remove load from the boiler, reduce capital requirements, and reduce potential mechanical stresses between water-cooled and non-cooled components.

B&W Top-Supported BFB Boiler

B&W Bottom-Supported BFB Boiler

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

  • No wear parts
  • No moving parts
  • No water-cooled screws or beams
  • No cinder re-injection system
  • Long-lasting bubble caps



  • Bottom-supported: Up to 225,000 lb/h (28.4 kg/s)
  • Top-supported: From 225,000 to 1,000,000 lb/h (28.4 to 126 kg/s)

Steam pressure: To 2600 psig (17.9 MPa)

Steam temperature: To 1000F (538C)


B&W Projects New Build


Upgrades and Retrofits by B&W


Babcock & Wilcox Parts and Service Support

University of Missouri

Project / Case Feature Items

University of Missouri
Missouri, USA

B&W designed, engineered and supplied a biomass-fueled bubbling fluidized bed (BFB) boiler to replace the University of Missouri’s existing coal-fired boiler, and to provide the university campus with electricity and steam for heating and other uses. Designed to burn chipped hardwoods and various local opportunity fuels near the university campus, the boiler will produce lower sulfur dioxide emissions and less ash than a typical coal-fired boiler.

Snowflake White Mountain Power – 美国亚利桑那州

报废的锅炉转化为燃烧生物质的 BFB,以满足可再生目标和紧迫的时间表

Mill – 美国俄勒冈州

采用为生物质燃烧设计的开放式底部 BFB 技术,提高了产能和排放控制

造纸厂 - 美国

将回收锅炉转换为 BFB,是延长工厂资产寿命的经济且环境友好的解决方案