High Temperature Fluid-Bed Heat Recovery for Aluminum Melting Furnace

摘要

The objective of the study was to establish whether technical problems would be encountered in increasing the inlet temperature of the fluid bed heat exchanger unit at Alcoa above the 1100 exp 0 F target of the current contract. Specifically, the temperature range of up to, and potentially above, 1600 exp 0 F were investigated to establish the benefits of higher temperature, trade offs required, and plans to achieve that technology goal. The benefits are tabulated and are very significant, particularly at the temperature range of 1600 to 1800 exp 0 F. Relative to 1100 exp 0 F the heat recovery is increased by 24 to 29% at 1600 and 1800 exp 0 F respectively. (ERA citation 09:022796)