Pathway To Supercritical Flexi-Burn? CFB Power Plant To Address The Challenge Of Climate Change (103-111)

摘要

A growing concern regarding air emissions and their effect on global warming is a key factor to be considered in developing and implementing new energy production solutions. Carbon-dioxide capture and storage (CCS) offers the potential for major reductions in carbon- dioxide emissions of fossil fuel-based power generation. Oxy-fuel combustion has been identified as one of the more economically favorable CCS technology options. Foster Wheeler AG Global Power Group companies (Foster Wheeler) are working to address the reduction of carbon-dioxide emissions of power plants with its integrated Flexi-Burn? CFB (circulating fluidized-bed) technology. The proven high efficiency supercritical CFB technology, when coupled with air separation units and carbon purification units, offers a solution for carbon dioxide emissions reduction. CFB technology has some advantages over pulverized coal technology, including a more uniform furnace heat flux, increased fuel flexibility and offers the opportunity to further reduce carbon dioxide emissions by more readily co-firing coal with bio-fuels. Through proper configuration and design, the same CFB steam generator can be switched from air mode to oxy-fuel mode without the need for unit shutdown for modifications. Foster Wheeler is addressing the development of supercritical Flexi-Burn CFB steam generators and integration with their balance-of-plant systems, through a variety of programs. These include pilot plant testing, small-scale demonstration projects, medium-scale demonstration plants, and the design of a commercial-scale supercritical Flexi-Burn CFB. The present paper will provide an overview of Foster Wheeler's recent work in these areas.