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Callidus Burners

Callidus Ultra-Blue Petrochemical (CUBP) Burners

Leverage Breakthrough Low Nitric Oxide (NOX) and Extreme Fuel Gas Flexibility to Accelerate your Energy Transition for Steam Cracker Service 

CUBP burner

As regulatory requirements around NOX emissions evolve, Honeywell Callidus CUBP burners provide the ability to cut your NOX emissions in half while offering seamless flexibility to fuel your furnace with hydrogen and hydrocarbon gasses.

In addition to low NOX emissions limits, programs for integrated petrochemical complexes addressing energy transition, hydrogen firing, reduced carbon emission and carbon capture will require flexible operations across widely ranging fuels. The CUBP burner enables deliberate, stepwise progression through the multi-step process of energy transition in a petrochemical complex facility.


  • Patent-pending Targeted Flue Gas Recirculation (TFGR) technology
  • Flexible fuel gas: 100% hydrogen fuel gas to 100% hydrocarbon using patent- pending multi - cavity flame stabilization technology
  • Adaptive heating of process coils
  • Honeywell Forge connected A.I. solutions available
  • Process heater service (new or retrofit)


  • Reduces NOX emissions by half compared to conventional Low NOX burners
  • Low Maintenance, Long Runtime – Optimize for 100% Hydrogen Firing
  • Furnace thermal efficiency maintained even when firing hydrogen fuel gas with lower mass flow rates
  • Improved throughput conversion, efficiency, yield, and runtime for steam cracking furnace installations


  • Steam cracker service (new or retrofit)

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Documents and Downloads
PDF Image Test Report for CUBH and CUBP Process Heater
PDF Image Test Report for CUBP Steam Cracker
PDF Image Honeywell UOP Callidus® CUBP Breakthrough Low NOx Steam Cracker Burner Data Sheet
PDF Image Honeywell UOP CUBH Burner for Steam Methane Reformers