Over the past two decades, CFB technology—including CFB boiler operation and CFB boiler design—has demonstrated its ability to efficiently utilize a wide variety of fuels while still meeting stringent stack emission limits.

Contact GE Steam Power today to learn more about our circulating fluidized bed boilers.

EFFICIENT CIRCULATING FLUIDIZED BED BOILER COMBUSTION AND FUEL FLEXIBILITY

Our CFB boiler technology allows for a wide range of fuels to be burned efficiently. This includes low-grade and difficult-to-burn fuels such as anthracite, lignite, petroleum coke, oil shale, discarded coal, and biomass within a wide range of mixing rates.

Low inherent NOx emissions at 50-200 mg/Nm3

Selective non-catalytic reduction (SNCR) systems can be added to our CFB boilers, leading to even lower NOx emissions.

Low SO2 emissions with 95-98% sulfur removal

Injection of prepared and dried limestone in the furnace. Dry scrubber NID (Novel Integrated Desulphurization) can achieve 98% sulfur removal while reducing limestone consumption.
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Ultra-Supercritical Circulating Fluidized Bed (CFB) Boilers

660 MWe for lignite B, higher for hard coal

  • Ultra-supercritical 285 bar, 605°C/623°C (MS/RH)
  • More than three points increased net plant efficiency relative to subcritical
  • 6% reduction of CO2 footprint 
  • Inherent low NOx emission with our air staging 
  • Just-In-Time (JIT*) system for limestone drying and crushing available for direct limestone feeding.
  • Low SO2 emission without backend treatment
  • Designed for reliability:
    • Our circulating fluidized bed boilers are made of materials that are well-tested for pressure parts and have many years of onsite experience
    • Multiple fuel feeders and ash extraction ports
    • Standardized modules that allow changing outputs, fuels, and steam temperatures

Learn how CFB Boilers are a part of GE's Smarter, Cleaner Steam Power initiative.

Fluidized Bed Boiler Specifications

 

Dual-Grate Arrangement

Design for specific requirements

Three-Bay Arrangement

Most common CFB design

Advanced Supercritical CFB

Large-sized CFB firing system

Fuel Entire range of fuels, including opportunity fuels such as petroleum coke, biomass, waste coal, oil shale, etc.
Steam Cycle

Subcritical

Subcritical

  • Ultra-supercritical
  • Supercritical
Size (MWe)

350

100-350

  • 660 for lignite B
  • Higher for hard coal
Superheater Outlet Steam Pressure (bar)

≤ 175

≤ 175

≤ 285

Superheater Steam Temperature (°C)

≤ 565

≤ 565

≤ 605

Reheater Steam Temperature (°C)

≤ 565

≤ 565

≤ 623

 

Design Features
  • Four cyclones
  • Double grates
  • External beds
  • Up to three cyclones in line
  • Single grate
  • In-furnace panels
  • Steam cooled cyclones
  • Modular concept
  • Standardized modules
  • Up to 8 cyclones
  • Steam cooled cyclones
  • Double fluidizing grates
  • External beds
  • In-furnace box columns
  • In-furnace U-shaped panels
  • CFB/NID integrated technology
  • SNCR in-house injection grid
  • JIT limestone feed system

Contact GE Steam Power today to learn more about our CFB boiler & combustion technology.