Coal-fired plants are under pressure to reduce their carbon-intensity. Available\noptions include co-firing CO2-neutral biomass, oxy-fuel-combustion as\npart of a carbon capture process or a combination of both to give a\nâ??CO2-negativeâ? power plant. BioCCS, the combination of CO2 Capture and\nStorage (CCS) with sustainable biomass conversion, is the only large-scale\ntechnology that can achieve net negative emissions. Combining, developing\nand demonstrating the oxy-combustion of high ratios of sustainable biomass\nwith coal in flexible circulating fluidized bed (CFB) boiler will bring significant\nadvances in the reduction of greenhouse gases (GHG) emissions. Areas\naddressed include possibilities for: biomass characterization; handling and\nfeeding; co-firing ratios definition; CFB oxy-co-combustion studies; combustion\nperformance; boiler flexibility in fuel and load; main emissions analysis;\nslaging, fouling and agglomeration; corrosion and erosion; and implications\non plant operation and associated costs. The article will detail a comprehensive\nunderstanding on sustainable biomass supply, co-firing ratios and\nhow direct biomass co-combustion under oxy-fuel conditions can be implemented.\nIt seeks to push biomass co-combustion in future large-scale oxy-fuel\nCFB power stations to high thermal shares while enhancing the power plantsâ??\noperational flexibility, economic competitiveness and give operational procedures.\nThere will be a need to consider the public acceptance of power\nproduction from coal and coal sustainability, by its combination with renewable\nsources of energy (biomass).
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