Full-Scale Design of a Fluidized-Bed Waste-Heat Recovery System: Topical Report

摘要

A major energy loss in industry is the heat content of the flue gases from industrial process heaters. One effective way to utilize the energy is to preheat the combustion air for the process heater. Fluidized-Bed Waste-Heat Recovery (FBWHR) System is designed to preheat this combustion air using the heat available in dirty flue gas streams. In this system recirculating alumina particles are heated by the flue gas in a raining bed. The hot particles are then removed from the bed and placed in a fluidized bed where they are fluidized by the combustion air. Through this process, the combustion air is preheated. The cooled particles are then returned to the raining bed. Initial development of this concept is for the aluminium smelting industry. In this report, the design of a full-scale FBWHR system is detailed. Specific work consisted of characterizing the host site aluminum smelting furnace chosen to receive the system; completing the system mechanical design; and integrating the system process control and instrumentation. (ERA citation 12:045673)