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Near Zero CO 2 Emissions in Coal Firing with Oxy‐Fuel Circulating Fluidized Bed Boiler
Author(s) -
Myöhänen K.,
Hyppänen T.,
Pikkarainen T.,
Eriksson T.,
Hotta A.
Publication year - 2009
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200800566
Subject(s) - flue gas , fluidized bed combustion , flue gas emissions from fossil fuel combustion , combustion , waste management , boiler (water heating) , power station , pilot plant , environmental science , coal , fossil fuel , supercritical fluid , fuel gas , carbon capture and storage (timeline) , greenhouse gas , chemical looping combustion , oxy fuel , fluidized bed , engineering , chemistry , electrical engineering , organic chemistry , ecology , climate change , biology
Abstract Carbon capture and storage is a concept to reduce greenhouse gas emissions of energy production from fossil fuels. In oxy‐fuel combustion, the fuel is burned in a mixture of oxygen and recycled flue gas. This generates CO 2 ‐rich flue gas from which the CO 2 is easily separated and compressed. Foster Wheeler Power Group is developing the existing design tools and process models of air‐fired circulating fluidized bed boilers to implement specific features of oxycombustion. The validation data is produced from bench‐scale and pilot‐scale experiments at the VTT, Technical Research Centre of Finland. A three‐dimensional circulating fluidized bed (CFB) furnace model is developed and applied by Lappeenranta University of Technology for predicting the effects of oxycombustion in full scale units. This paper presents concept studies and initial 3D modeling results based on a 460 MW e supercritical CFB power plant at Lagisza, and pilot‐scale studies with flue gas recirculation demonstrating real oxygen combustion conditions.