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, for low-grade and difficult-to-burn fuels such as anthracite, lignite, petroleum coke, oil shale, discarded coal and biomass, GE offer circulating fluidized bed technologies with different arrangements suited to fuel . GE CFB technology has low inherent NOx emissions at 50-200 mg/Nm3 due to the following features:

  • 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
    • Relatively low and uniform furnace temperatures of approximately 850°C to 900°C
    • Air staging in the lower furnace through the introduction of primary air and secondary air at appropriate levels
    • Uniformly distributed fuel and air due to intense mixing inside the bed of solids in the furnace
    • Isothermal conditions in the circulating solid loop due to the positive impact of highly efficient cyclones
    • In addition, low SO2 emissions with 95 to 98% sulfur removal.
    • Injection of prepared and dried limestone in the furnace
    • Potentially inherent capture by the fuel-bound calcium
    • Dry scrubber NID achieving 98 % sulfur removal while reducing limestone consumption
    • Just-In-Time (JIT) system for limestone drying and crushing available for direct limestone feeding

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

Fluidized Bed Boiler Specifications

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