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首页> 美国政府科技报告 >Advanced Atmospheric Fluidized-Bed Combustion Design: Internally Circulating AFBC. Final Report
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Advanced Atmospheric Fluidized-Bed Combustion Design: Internally Circulating AFBC. Final Report

机译：先进的大气流化床燃烧设计：内循环aFBC。总结报告

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This report defines and characterizes an advanced, industrial, fluidized-bed combustion concept - the internally circulating AFBC - having superior performance and cost characteristics. The internally circulating AFBC incorporates four major innovative features (single fuel feed; jet-attrition-controlled sulfur removal; multiple air staging; and high-velocity, single vessel integral design using draft tube circulation) to achieve: high boiler thermal efficiency (approaching 90% through integral design, high combustion efficiency, and low sorbent consumption); fuel flexibility (single coal feed point, coal size up to nominal 2 in, flexible air distribution, capability of feeding and combusting gaseous and liquid fuels); high reliability (simplified fuel feed and solids handling); turndown flexibility (degree and ease of turndown achieved by integral segmented bed, staged air distribution); low sorbent requirements for high SO sub 2 control (Ca/S <2 for greater than 90% removal using jet-attrition-controlled sulfur removal); low NO/sub x/ emissions (0.1 lb/10 exp 6 Btu through multiple stages of air injection and capability of maintaining high carbon content); compact design (single, shop-fabricated, rail-shippable units with capacity up to 150 x 10 exp 6 Btu/hr for high-velocity operation); and low cost (simplified, integral function design with high efficiency). Westinghouse concludes that the internally circulating AFBC concept has great potential for industrial market acceptance because of its effective performance and high reliability at low steam generation costs. The concept merits further development to evolve its innovative features further and to determine its commercial design configuration and operating conditions. (ERA citation 08:031154)

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