Development and Demonstration of a High Efficiency, Rapid Heating, Low NOx Alternative to Conventional Heating of Round Steel Shapes, Steel Substrate (Strip) and Coil Box Transfer Bars

Kurek, Harry ; Wagner, John

Gas Technology Institute

关键词: Efficiency;    Heating;    Exhaust Gases;    Direct Flame Impingement;    Flames;   

DOI  :  10.2172/970839
RP-ID  :  DOE/ID/14043-1
RP-ID  :  FC36-01ID14043
RP-ID  :  970839

美国|英语

来源: UNT Digital Library

【 摘 要 】

Direct Flame Impingement involves the use of an array of very high-velocity flame jets impinging on a work piece to rapidly heat the work piece. The predominant mode of heat transfer is convection. Because of the locally high rate of heat transfer at the surface of the work piece, the refractory walls and exhaust gases of a DFI furnace are significantly cooler than in conventional radiant heating furnaces, resulting in high thermal efficiency and low NOx emissions. A DFI furnace is composed of a successive arrangement of heating modules through or by which the work piece is conveyed, and can be configured for square, round, flat, and curved metal shapes (e.g., billets, tubes, flat bars, and coiled bars) in single- or multi-stranded applications.