Improved Temperature Uniformity in Batch Reheat Furnaces with Praxair's Dilute Oxygen Combustion (DOC) System

摘要

As the performance requirements for materials increase, the technologies used to produce them must improve as well. Reheat furnaces used for forging operations are one example of equipment that must meet tighter performance specifications. Recent advances in materials development and processing techniques have resulted in narrower allowable ranges of the temperature distribution in furnaces surveyed per AMS-2750D. This paper will present results from recent installations of Praxair's Dilute Oxygen Combustion Firing System using pulse fired control systems. The pulse fired DOC burners have demonstrated the ability to meet a temperature uniformity of less than ± 15 F, with NOx emissions of 0.01 lb/mmBtu or less, while reducing fuel consumption by as much as 70%.