A compact regeneration burner provides lower energy costs and low NOx emissions, as well as improved product quality and reliable operation in stainless steel annealing and pickling lines.
Furnaces used in annealing and pickling (A&P) lines for stainless steel strip are generally designed as catenary furnaces. The strip is heated from cold to temperatures in the range of 2000 F (1095 C) using free flames. In most cases, the combustion products are withdrawn on the strip inlet side, preheating the strip in an unheated furnace section. This preheat section is required to improve fuel efficiency and to lower exhaust gas temperatures prior to a central air preheater. Production increases are often limited by: