A circulating fluidized bed steam generator 10 and {HEAD ~ a method} for operating {TAIL ~ the circulating fluidized bed steam generator} are provided which offer the flexibility to use carbon dioxide both as a desirable end product and as support to the combustion process 
A circulating fluidized bed steam generator 10 and { HEAD ~ a method } for operating { TAIL ~ the circulating fluidized bed steam generator } are provided which offer the flexibility to use carbon dioxide both as a desirable end product and as support to the combustion process
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