Tlakovй fluidnн spalovбnн -PFBC

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Tlakové fluidní spalování -PFBC
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Evolution of the coal-fired power plant
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Schematic of circulating PFBC system.
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Obeh s tlakovým fluidním spalováním
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• Bubbling PFBC
• Standard type is a bubbling PFBC in a pressure
  vessel
• Operating pressure (1 to 1,5 MPa)
• Coal fired with dolomite addition
• Operating temperature (800- 900ºC)
• Heat transfer controlled by in-bed heat
  exchangers (load following by changing bed
  height)
• Deep beds (3-4 m )

• Circulating Fluidized Bed Cycle boilers
• Several hundred large CFBC boilers worldwide
• Jacksonville 300 MWe CFBC coal, etc.- largest
  units
• Provence, France 250MWe lignite (high Ca)
• Two 250 MWe CFBC boilers in Korea (Anthracite)

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• Sulphur Capture
• In atmospheric FBC
• CaCO3 CaO CO2
• Produces a porous particle (50), which gradually
  fills up with CaSO4, limiting overall conversion
  to about 30-40
• In pressurized FBC
• CaCO3 ½ O2 SO2 CaSO4 CO2

• PFBC Operational Units
• Cottbus, Germany (71 MWe)
• Vartan, Sweden (Two units, total 135
  MWe)
• Karita, Japan (360 MWe)
• New Plants? Possibly a large plant
  in China

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P200 Stockholm
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Teplárna Escatron

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Advanced Pressurized Fluidized-Bed Cycle A-PFBC
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Advanced Pressurized Fluidized Bed Combustion
Technology (A-PFBC)
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A-PFBC
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The development of coal utilization high
efficiency power generation technology is an
urgent issue from the viewpoints of reduction in
greenhouse gases and of resource
saving. Technology A-PFBC is a further advanced
technology of PFBC (pressurized fluidized bed
combustion). That is, the development aimed to
increase the temperature at inlet of gas turbine,
(from about 850oC to about 1,350o C), and to
recover high temperature steam. To attain
higher efficiency of power generation (about 46
of net efficiency about 40 for the current coal
fired power plants) by the combination of PFBC
with the fluidized bed gasification technology.
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Thank You for Attention