Modelling and Dynamic Studies of the Second Generation Oxy-Fired CFB Boiler

Hannu Mikkonen, Jari Lappalainen, Reijo Kuivalainen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    Climate change due the temperature increase in the world is one of the biggest challenges for the mankind. The need to develop low carbon power production is obvious already nowadays and specially in the future. In the EU 7th Framework Program's project O2GEN (Optimization of Oxygenbased CFBC Technology with CO2 capture), modelling plays a major role in evaluation of an oxy-firing and circulated fluidized bed based solution for low carbon energy production. In the earlier, 1st generation CCS capable plant concept, the conditions in the oxidant streams and furnace side were close to air-firing conditions, and the boiler could continuously produce electricity both in air and oxy modes. This paper deals with the 2nd generation concept, which major differences and improvements include duplication of the plant power capacity, increasing the oxygen content up to 40 mol% in the oxidant streams, focusing on continuous operation only in oxy-firing mode, and heat integration to increase the overall efficiency. This paper presents the 2nd generation concept modelling, simulation results as well as the first implications on the dynamic behavior, illustrated with a firing mode switching case.
    Original languageEnglish
    Title of host publicationProceedings of the 22nd international conference on fluidized bed conversion
    EditorsDorota Bankiewicz, Mia Mäkinen, Patrik Yrjas
    PublisherÅbo Akademi
    ISBN (Print)978-952-12-3223-7
    Publication statusPublished - 2015
    MoE publication typeA4 Article in a conference publication
    Event22nd International Conference on Fluidized Bed Conversion, FBC 2015 - Turku, Finland
    Duration: 14 Jun 201517 Jun 2015
    Conference number: 22


    Conference22nd International Conference on Fluidized Bed Conversion, FBC 2015
    Abbreviated titleFBC 2015


    • CFB
    • ASU
    • CPU
    • CCS
    • dynamic modelling
    • simulation
    • oxy-firing
    • firing mode switch
    • Apros


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