Callidus Ultra Blue (CUB) 
Next Generation Burners
The Callidus Ultra Blue (CUB) reduces thermal NOx in the combustion zone, achieving 10 -15 ppmv in most natural draft fired process heaters. 

Callidus Ultra Blue Burner Features:
• Less than 10ppm (20mg/Nm3) NOx achieved in the field with optimum fuel composition and furnace temperatures
• NOx levels between 10-20ppm are typical results in hundreds of CUB burners
• Eliminates or reduces the need for expensive post-combustion equipment
• Burner is totally self-contained; no external flue gas recirculation or steam injection necessary
• Burner heat releases from 2 to 30MMBtu/hr (.5 to 7.6 Gcal/hr) with high capacities under development
• Turndown of at least 3:1
• Flame length approximately 1.25 ft/MMBtu (1.6m/Gcal) fired
• Natural and forced draft operation
• Ambient and preheated air operation
• Round and flat flame designs

Typical Applications for Next Generation Burners:
• Process heaters for refining and petrochemical industries
• Reforming furnaces
• Cracking Furnaces
• Coking Furnaces
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