PAPERS SELECTED FOR THE SYMPOSIUM

• COMBUSTION OF WASTE FUELS IN CFB BOILERS - LATEST DESIGN AND EXPERIENCE

  Thomas Ortner - Austrian Energy & Environment AG & Co KG, Gratz, Austria

  Abstract Text

  Austrian Energy & Environment AG & Co KG has implemented two contracts for waste fired CFB boilers whose concept is mainly based on the reference plant RV Lenzing (Austria), which is still the largest CFB boiler (120 MWth) all over... show full text »
  Abstract Text

  Austrian Energy & Environment AG & Co KG has implemented two contracts for waste fired CFB boilers whose concept is mainly based on the reference plant RV Lenzing (Austria), which is still the largest CFB boiler (120 MWth) all over the world in operation for burning RDF (refuse derived fuel) and other waste fuels and that holds a world record on operating hours for such applications. Four additional contracts ranging from 95 to 150 MWth are being implemented by AE&E at present. Forced by official regulations as well as by the conditions and behaviour of the waste fuels a special design of the boiler has to apply with the following main features: • Adiabatic furnace in combination with an external heat exchanger • Hot gas cyclone combined with an adiabatic post combustion chamber • Vertical boiler radiation passes and horizontal tailend pass • Special fuel feeding system and open nozzle grid for fluidization As a consequence the CFB boiler provides an excellent performance including high fuel flexibility, very low emission figures, high efficiency etc. « hide
  Symposium Session: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana